JP7412114B2 - wind tunnel test equipment - Google Patents

Description

The present invention relates to a wind tunnel test device that blows air toward a measured object installed in a wind tunnel and tests the influence of airflow generated on the surface of the measured object.

In recent years, autonomous driving and driving support technologies for automobiles and the like have been widely studied and are being put into practical use. In this case, there is a need to improve the stability (aerodynamic stability) of control against cross winds of a running automobile, etc., and higher precision in wind tunnel tests is desired.

In conventional wind tunnel test equipment, it is known that the airflow in the area under the floor of an object to be measured such as an automobile installed in the wind tunnel, especially near the floor surface, is affected by a so-called boundary layer. The formation of layers was a factor that hindered the high accuracy of wind tunnel tests.

Therefore, in the wind tunnel test apparatus, various technical devices for improving the accuracy of wind tunnel tests have been proposed, for example, in Japanese Patent Application Laid-Open No. 2009-74939.

The wind tunnel test device disclosed in the above-mentioned Japanese Patent Application Laid-open No. 2009-74939 etc. includes a moving belt that moves the floor surface along the air flow direction, and a suction section that sucks the air flow near the floor surface. It consists of With this configuration, the wind tunnel test apparatus disclosed in the publication is capable of sending airflow with a substantially uniform velocity distribution to the object to be measured up to the floor surface.

On the other hand, in recent years, an airflow control device equipped with an airflow generation device for controlling the flow of fluid along the surface of a fluidic device to improve the efficiency of the fluidic device has been disclosed, for example, in Japanese Patent Laid-Open No. 2018-4059. , various proposals have been made.

The airflow control device disclosed in the above-mentioned Japanese Patent Application Publication No. 2018-4059 etc. includes a plasma actuator as an airflow generation device, and uses this plasma actuator to control a boundary layer generated on the surface of a fluid device. .

Japanese Patent Application Publication No. 2009-74939 JP 2018-4059 Publication

However, the conventional wind tunnel test apparatus disclosed in the above-mentioned Japanese Patent Application Laid-open No. 2009-74939 requires large-scale equipment in the lower area and surrounding area of the apparatus, for example, to drive a belt or to suck gas. becomes. This causes the wind tunnel test device to become larger and more complicated, and at the same time, there is a problem in that the manufacturing cost, maintenance and management cost, etc. of the wind tunnel test device become burdensome.

Furthermore, the airflow control device disclosed in the above-mentioned Japanese Patent Application Publication No. 2018-4059 etc. is for controlling the fluid flowing on the surface of the fluid equipment itself, and has a configuration that can be directly applied to the wind tunnel test device. It doesn't belong to.

On the other hand, in conventional wind tunnel test equipment, the direction of air blowing inside the wind tunnel is usually set to be a constant direction. Therefore, it is difficult to precisely reproduce the air flow around a vehicle (especially around the lower part of the vehicle floor) when the vehicle is turning or is exposed to crosswinds, for example, using a wind tunnel test equipment with a conventional configuration. was considered difficult.

The present invention has been made in view of the above-mentioned points, and its object is to have an installation part for installing a measured object on the floor surface of a wind tunnel, and to To provide a wind tunnel test device that performs a test by applying an airflow blown through the wind tunnel to an object to be measured, which suppresses the generation of a boundary layer and contributes to improving the accuracy of the wind tunnel test. It is.

In order to achieve the above object, a wind tunnel test device according to one aspect of the present invention includes an installation part for installing an object to be measured on a floor surface in a wind tunnel, and a A wind tunnel test device that performs a test by applying an airflow blown into the wind tunnel toward the wind tunnel, the device being arranged so as to extend in a direction intersecting the direction of the airflow on the plane of the installation part, and a plurality of airflow generating devices arranged at predetermined intervals along the airflow direction, and the installation part is configured to be rotatable around a rotation axis perpendicular to a plane of the installation part. , a drive mechanism that rotates the installation section around the rotation axis; a support member that supports the object to be measured and supports the object to be measured in a floating state with respect to a plane of the installation section; The airflow generating device generates an airflow that flows in the same direction as the airflow when it is arranged to extend in a direction perpendicular to the airflow direction, and the installation portion is configured to move in a predetermined direction by the drive mechanism . When the airflow generating device is rotated by an angle of let

A wind tunnel test device according to another aspect of the present invention includes an installation part for installing an object to be measured on the floor surface of the wind tunnel, and a wind tunnel test device that includes an installation part for installing an object to be measured on the floor surface of the wind tunnel. A wind tunnel test device that performs a test by applying a blown air flow, the device being arranged on a plane of the installation part so as to extend in a direction crossing the direction of the air flow, and along the direction of the air flow. A plurality of airflow generation devices are arranged at predetermined intervals, and the airflow generation devices are arranged on the plane of the installation part along the airflow direction, and the airflow generation device They are installed at different intervals in the left and right regions in the direction intersecting the airflow direction.

According to the present invention, there is provided an installation part for installing an object to be measured on the floor surface of the wind tunnel, and a test is performed by applying an airflow blown through the wind tunnel to the object to be measured installed in the installation part. It is possible to provide a wind tunnel test device that can suppress the generation of boundary layers and contribute to improving the accuracy of wind tunnel tests.

A diagram schematically showing the main configuration of a wind tunnel test device according to an embodiment of the present invention A conceptual diagram showing the basic configuration of an airflow generation device (plasma actuator) applied to a wind tunnel test device according to an embodiment of the present invention Cross-sectional view along the arrow [3]-[3] line in Figure 2 A plan view conceptually showing the main configuration of the wind tunnel test device of this embodiment An overhead view conceptually showing the main configuration of a wind tunnel test device according to a first modification of an embodiment of the present invention An overhead view conceptually showing the main configuration of a wind tunnel test device according to a second modification of an embodiment of the present invention An overhead view conceptually showing the main configuration of a wind tunnel test device according to a third modification of an embodiment of the present invention

Hereinafter, one embodiment of the present invention will be described based on the drawings. In addition, each drawing used in the following explanation is shown schematically, and in order to show each component in a size that can be recognized on the drawing, the dimensional relationship and scale of each member are shown. may be shown differently for each component. Therefore, the present invention is limited only to the illustrated form with respect to the quantity of each component, the shape of each component, the ratio of the size of each component, the relative positional relationship of each component, etc. described in each drawing. It is not limited.

One embodiment of the present invention is an example of a wind tunnel test apparatus whose main object to be measured is, for example, an automobile. Note that the automobile vehicle as the object to be measured to which the wind tunnel test apparatus corresponds may have a size corresponding to the actual vehicle, or may be a vehicle model that is a scaled-down version of the actual vehicle.

FIG. 1 is a diagram schematically showing the main configuration of a wind tunnel test apparatus according to an embodiment of the present invention. Here, it is assumed that the basic configuration of the wind tunnel test apparatus of this embodiment is substantially the same as that of a wind tunnel test apparatus with a general configuration that has been put into practical use in the past. Therefore, in FIG. 1, the configuration showing the characteristic portions of the present invention is mainly shown, and illustration of other configurations is omitted.

2 and 3 are conceptual diagrams showing the basic configuration of an airflow generation device (plasma actuator) applied to a wind tunnel test device according to an embodiment of the present invention. Of these, FIG. 2 is a perspective view of the airflow generator (plasma actuator). FIG. 3 is a cross-sectional view taken along the arrow [3]-[3] line in FIG. In order to facilitate illustration and understanding, particularly in FIG. 3, the shapes and dimensions of each member such as the electrode, dielectric, and insulator are conceptually illustrated.

FIG. 4 is a plan view conceptually showing the main configuration of the wind tunnel test apparatus of this embodiment. FIG. 4 shows a bird's-eye view of FIG. 1 from above.

The wind tunnel test apparatus 1 of this embodiment includes a wind tunnel (not shown), a blower 17, an installation section 10, and the like.

Although not shown, the wind tunnel is a path through which air sent from the blower 17 flows. A blower 17 is disposed at one end of the wind tunnel.

The blower 17 is a device for forming an air flow in the wind tunnel, and a fan or the like that generates air by rotational drive is applied. In addition, the arrow mark W shown in FIG. 1 etc. has shown the direction of the airflow produced|generated by the said blower 17.

The installation section 10 is provided on a part of the floor surface in the wind tunnel at a middle position in the wind tunnel, and is a stage on which the object to be measured 20 is installed. Here, as shown in FIG. 1, the object to be measured 20 is assumed to be a vehicle such as a four-wheeled automobile.

As shown in FIGS. 1 and 4, a plurality of plasma actuators 11, which are airflow generating devices, are arranged on the plane of the installation section 10 in the wind tunnel test apparatus 1 of this embodiment.

Each of the plurality of plasma actuators 11 is formed into an elongated unit shape. Each plasma actuator 11 is arranged so as to extend in a direction intersecting (eg, substantially orthogonal to) the airflow direction W from the blower 17 . That is, each plasma actuator 11 is arranged so that its long axis direction intersects with the airflow direction W. Further, the plurality of plasma actuators 11 are arranged so as to be substantially parallel to each other at predetermined intervals along the airflow direction W from the blower 17.

Here, the detailed configuration of the plasma actuator 11, which is an airflow generating device, will be explained using FIGS. 2 and 3.

As shown in FIGS. 2 and 3, the plasma actuator 11 includes two electrodes (an upper electrode 12a, a lower electrode 12b), a dielectric 13, a substrate member 14, a power source 15, and the like.

The two electrodes (12a, 12b) are, for example, conductive members such as metal. Specifically, as these two electrodes (12a, 12b), for example, copper foil adhesive tape or the like is applied.

The dielectric 13 is an electrically insulating member provided between the two electrodes (12a, 12b). Specifically, as this dielectric material 13, for example, polyimide tape or the like is applied. Here, the two electrodes (12a, 12b) are arranged with the dielectric 13 in between, but in this case, these two electrodes (12a, 12b) in the direction along the airflow direction W. It is placed in a shifted position. Specifically, the upper electrode 12a is arranged on the upstream side in the airflow direction, and the lower electrode 12b is arranged on the downstream side in the airflow direction than the upper electrode 12a. Note that in FIGS. 2 and 3, the side where the arrow mark W indicating the airflow direction is shown is the upstream side in the airflow direction.

The substrate member 14 is a support member that fixedly supports the two electrodes (12a, 12b) and the dielectric 13. Specifically, as the substrate member 14, a resin member such as an acrylic plate is applied.

The power source 15 is a high voltage, high frequency power source to which two electrodes (12a, 12b) are respectively connected. In this case, the lower electrode 12b is wired to be grounded. Note that the power source 15 is, for example, an AC power source with a voltage of about several kV and a frequency of about several kHz. Here, the voltage applied to the two electrodes depends on the arrangement of the electrodes and the material of the dielectric.

Further, in the illustrated configuration example, one of the two electrodes, the upper electrode 12a, is exposed to the airflow, and the surface of the other electrode 12b is covered with a dielectric material, so that the upper electrode 12a is exposed to the airflow. There is no direct contact with the Note that the present invention is not limited to this form, and the upper electrode 12a may also be configured so that its outer surface is covered with an insulator or the like.

In the plasma actuator 11 having such a configuration, when a high AC voltage is applied between the two electrodes (12a, 12b), a discharge occurs in the portion sandwiched between the upper electrode 12a and the dielectric 13. As a result, plasma is generated from the upper electrode 12a toward the lower electrode 12b, and an airflow is generated along the wall surface (the outer surface on the side where the upper electrode 12a is provided) (see arrow P in FIG. 3).

Here, as described above, the plasma actuator 11 is arranged so that its long axis extends in a direction intersecting the airflow direction W from the blower 17 on the plane of the installation section 10. Therefore, the airflow generated by the plasma actuator 11 flows in the same direction as the airflow from the blower 17. This suppresses the formation of a boundary layer on the floor surface of the wind tunnel test apparatus 1 (the plane of the installation section 10).

Note that when performing a wind tunnel test using the wind tunnel test apparatus 1, first, the object to be measured 20 is installed on the plane of the installation section 10. Here, the object to be measured 20 is installed so that the central axis Ax (see FIG. 4) along the front-rear direction in the running state is substantially parallel to the airflow direction W from the blower 17.

As explained above, the wind tunnel test device 1 according to an embodiment of the present invention has the installation section 10 for installing the object to be measured 20 on the floor surface in the wind tunnel, and the test device 1 installed on the installation section 10. This is a wind tunnel test device 1 that performs a test by applying an airflow blown into the wind tunnel toward a measurement object 20. It is configured to include a plasma actuator 11, which is an airflow generating device that is arranged to extend and generates an airflow that flows in the same direction W as the airflow. A plurality of plasma actuators 11 (airflow generation devices) are arranged in parallel on the plane of the installation part 10 at predetermined intervals along the airflow direction W so that the plasma actuators 11 are substantially parallel to each other.

According to the wind tunnel test device 1 of this embodiment configured in this way, the airflow generated by the plasma actuator 11 provided on the floor surface (the plane of the installation part 10) of the wind tunnel test device 1 causes the floor surface ( This makes it possible to suppress the formation of a boundary layer on the plane of the installation section 10.

Further, the airflow generated by the plasma actuator 11 acts to guide the airflow from the blower 17. As a result, the airflow state near the floor surface in the wind tunnel test apparatus 1 can be brought closer to the state when the object to be measured 20 is actually running, so higher reproducibility of the tester flow can be obtained, resulting in high accuracy. Wind tunnel tests can be conducted.

Furthermore, according to the configuration of the present embodiment, it is only necessary to arrange a plurality of plasma actuators 11, which are airflow generating devices, in a predetermined arrangement on the floor surface (the plane of the installation part 10) of the existing wind tunnel test apparatus 1. A highly accurate wind tunnel test device 1 can be easily realized at low cost with only simple renovation work.

Furthermore, compared to conventional equipment (for example, installation of a moving belt), similar effects can be obtained with a simpler configuration, which can contribute to reducing the manufacturing cost of the wind tunnel test apparatus itself.

By the way, in conventional wind tunnel test equipment, the direction of airflow from the blower is usually constant. Also in the wind tunnel test apparatus 1 of the configuration example illustrated as one embodiment described above, the direction in which the airflow from the blower 17 hits the object to be measured 20 is constant. Therefore, during a wind tunnel test performed using a wind tunnel test apparatus having a conventional configuration, it is possible to ensure the reproducibility of the airflow in the state when the object to be measured 20 is traveling straight. In addition, by further providing the plasma actuator 11 in the wind tunnel test apparatus 1 according to the configuration example of the above-described embodiment, the reproducibility of the airflow particularly near the floor surface can be ensured with higher precision.

On the other hand, using a wind tunnel test device with a conventional configuration, check, for example, the airflow condition when the object 20 to be measured (vehicle such as a car) turns, or the airflow condition around the vehicle when the object 20 to be measured is subjected to a crosswind. If desired, this can be done by, for example, installing the object to be measured 20 with its central axis Ax (see FIG. 4) inclined with respect to the airflow direction W from the blower 17. However, with such means, the reproducibility of airflow may be insufficient.

Therefore, in the wind tunnel test apparatus 1A of the first modification of the present embodiment, the arrangement of the plasma actuator 11, which is an airflow generator, is further devised so that, for example, the object to be measured 20 (vehicle such as an automobile) turns. Even when it is desired to check the airflow state at the time of the test or the airflow state around the vehicle when the object to be measured 20 is subjected to a crosswind, it is possible to perform a wind tunnel test with higher accuracy.

FIG. 5 is an overhead view conceptually showing the main configuration of a wind tunnel test apparatus according to a first modification of an embodiment of the present invention.

The basic configuration of a wind tunnel test apparatus 1A according to a first modification of an embodiment of the present invention is substantially the same as that of the above-described embodiment. In the wind tunnel test apparatus 1A of this modification, the arrangement configuration of the plurality of plasma actuators 11, which are airflow generating devices provided on the floor surface (the plane of the installation section 10A), is slightly different.

A plurality of plasma actuators 11 are arranged on the plane of the installation section 10A of the wind tunnel test apparatus 1A of this modification.

In this modification, the plurality of plasma actuators 11 are configured such that each unit can be moved independently by a predetermined amount in a predetermined direction.

In this case, each plasma actuator 11 is configured to be moved on the plane of the installation section 10A using a drive mechanism (not shown) to realize a desired arrangement.

Although the drive mechanism for each plasma actuator 11 is not particularly illustrated, it can be realized by a simple mechanism as described below. For example, each of the plurality of plasma actuators 11 is placed on a rail-shaped support member, and the rail-shaped support members are placed side by side on the plane of the installation section 10A. A conceivable mechanism is such that each of the plurality of rail support members can be individually controlled in movement.

For example, if the plurality of plasma actuators 11 in this modification are arranged in a fan-shaped configuration as a whole, as shown in FIG. It becomes like this. That is, in this case, the airflow in the airflow direction W from the blower 17 can be changed into airflows as indicated by arrows Px1, Px2, and Px3 in FIG. 5 by passing over the plurality of plasma actuators 11 ( details later). Note that at this time, the object to be measured 20 is installed so that the center axis Ax in the front-rear direction (see FIG. 5) is substantially parallel to the airflow direction W.

To explain the arrangement example shown in FIG. 5 in more detail, the plurality of plasma actuators 11 are arranged at predetermined intervals in the direction along the airflow direction W as a whole on the plane of the installation section 10A.

In addition, in this modification, the left and right regions in the direction intersecting the airflow direction W with respect to the central axis Ax (see FIG. 5) along the front-rear direction of the object to be measured 20 installed on the installation section 10A. The arrangement is such that the spacing is different between the two. In this point, this embodiment is different from the above-described embodiment.

Specifically, in the arrangement example shown in FIG. 5, the plasma actuators 11 in one left region are arranged at close intervals with respect to the central axis Ax, and the plasma actuators 11 in the other right region are arranged at sparse intervals. ing.

Thereby, the plurality of plasma actuators 11 are arranged in a fan-shaped configuration as a whole. With this configuration, the state of the airflow can be changed between one left region and the other right region of the central axis Ax (see symbols Px1, Px2, and Px3 in FIG. 5).

Therefore, according to this modification, even if the airflow direction W from the blower 17 is constant, the arrangement settings of the plurality of plasma actuators 11 on the plane of the installation section 10A are changed depending on the desired test situation. By doing so, it is possible to confirm with high accuracy the airflow state around the vehicle depending on the state of the object to be measured 20, for example, when turning or when receiving a crosswind.

In the above-described first modification, each of the plurality of plasma actuators 11 is configured to be able to move independently by a predetermined amount in a predetermined direction. Therefore, it is conceivable that the drive mechanism becomes complicated. Therefore, in a second modification example shown below, a plurality of plasma actuators 11 are configured to be moved simultaneously.

FIG. 6 is an overhead view conceptually showing the main configuration of a wind tunnel test apparatus according to a second modified example of an embodiment of the present invention.

The basic configuration of a wind tunnel test apparatus 1B according to a second modified example of an embodiment of the present invention is substantially the same as that of the above-mentioned embodiment. In the wind tunnel test apparatus 1B of this modification, the configuration of the installation section 10B in which the plurality of plasma actuators 11, which are airflow generation devices, are provided is slightly different.

This modification is similar to the above-described embodiment in that a plurality of plasma actuators 11 are arranged in a predetermined manner on the plane of the installation section 10B of the wind tunnel test apparatus 1B of this modification.

In this modification, the installation section 10B in which the plurality of plasma actuators 11 are arranged is configured to be rotatable around a rotation axis (in the direction of arrow R in FIG. 6) perpendicular to the floor surface of the wind tunnel test apparatus 1B. has been done. In this case, although a drive mechanism for rotating the installation section 10B is not particularly illustrated, a conventionally known mechanism such as a drive mechanism for rotating a stage may be applied.

In addition, when the installation part 10B is configured to be rotatable in this way, if the object 20 to be measured is installed as it is on the plane of the installation part 10B, the object 20 to be measured will also be rotated as the installation part 10B is rotated. It will rotate in the direction. Therefore, in the configuration of this modification, when the object to be measured 20 is installed on the plane of the installation section 10B, the object to be measured 20 is maintained in a state slightly lifted from the plane of the installation section 10B. To this end, the vehicle is configured to include a support member 18 that supports, for example, an axle. The object to be measured 20 supported by the indicating member 18 can always maintain an installed state in which the central axis Ax is substantially parallel to the airflow direction W from the blower 17 even when the installation part 10B rotates.

With such a configuration, in the wind tunnel test apparatus 1B of this modification, the arrangement of the plurality of plasma actuators 11 can be arbitrarily changed by rotating the installation part 10B in a predetermined direction according to the desired test situation. Can be done.

Therefore, for example, while the plurality of plasma actuators 11 can be arranged in the arrangement form described in the above-mentioned embodiment (see FIG. 4), the arrangement shown in FIG. The form can be changed. Here, the state shown in FIG. 6 is a state in which the plurality of plasma actuators 11 are tilted with respect to the central axis Ax of the object to be measured 20. By arranging a plurality of plasma actuators 11 in this manner, it is possible to generate an airflow that flows in an oblique direction with respect to the airflow direction W. As a result, it is possible to check with high accuracy the airflow state around the vehicle depending on various conditions, such as when the object to be measured 20 is turning or when it is exposed to a crosswind.

Next, a wind tunnel test apparatus according to a third modification of the embodiment of the present invention will be described. FIG. 7 is an overhead view conceptually showing the main configuration of a wind tunnel test apparatus according to a third modification of an embodiment of the present invention.

The basic configuration of the wind tunnel test apparatus 1C according to the third modification of the embodiment of the present invention is substantially the same as that of the above-described embodiment. In the wind tunnel test device of this modification, the configuration and arrangement of the plurality of plasma actuators, which are airflow generating devices, are different.

A plurality of plasma actuators are arranged on the plane of the installation section 10C of the wind tunnel test apparatus 1C of this modification.

In this case, the plurality of plasma actuators in this modification extend in a direction intersecting the airflow direction W from the blower 17 on the plane of the installation section 10 as a whole, similar to the above-described embodiment. They are arranged side by side at a predetermined interval along the same airflow direction W. Furthermore, the plurality of plasma actuators in this modification are divided into a plurality of regions in a direction intersecting the direction along the airflow direction W of the blower 17. In this point, it differs from each of the above-mentioned configuration examples.

Specifically, as shown in FIG. 7, it is divided into at least three regions (L, C, R) in the airflow direction W (that is, the direction intersecting the central axis Ax of the object to be measured 20). There is. Here, the area indicated by the symbol C is a predetermined area spanning the central axis Ax of the object to be measured 20, and is referred to as the central region C. Each of the plurality of plasma actuators included in this central region C is designated by the symbol C. 11C.

In addition, the area indicated by the symbol L is a region to the left of the central region C with respect to the central axis Ax, and is referred to as a left region L, and each of the plurality of plasma actuators included in this left region L is designated by the symbol 11L. shall be shown as

The region indicated by the symbol R is a region on the right side of the central region C with respect to the central axis Ax, and is referred to as the right region R, and each of the plurality of plasma actuators included in this right region R is indicated by the symbol 11R. shall be taken as a thing.

Then, control processing is performed to apply different voltages and different frequencies to the plurality of plasma actuators 11L, 11C, and 11R included in each of the left region L, center region C, and right region R for each region. This makes it possible to generate airflow with different flow rates for each area.

With such a configuration, even if the wind tunnel test apparatus 1 has a constant airflow direction W from the blower 17, if appropriate application control is performed to the plurality of plasma actuators 11L, 11C, and 11R, the airflow from the blower 17 can be controlled. The airflow in the direction W can be guided by the airflow generated by each of the plasma actuators 11L, 11C, and 11R on the floor surface, so that checking the wind direction and the airflow on the floor surface can be easily and at low cost. be able to.

In addition, also in the case of the configuration of this modification, the object to be measured 20 is installed so that the center axis Ax in the front-rear direction and the direction along the airflow direction W are substantially parallel.

Also, in the configuration of this modification, each of the plasma actuators 11L, 11C, and 11R is configured to be moved on the plane of the installation section 10C using a drive mechanism (not shown) (similar to the first modification). configuration). Furthermore, it is also possible to appropriately combine the configuration of this modification and the configurations of each of the above-mentioned modifications.

It goes without saying that the present invention is not limited to the embodiments described above, and that various modifications and applications can be made without departing from the spirit of the invention. Furthermore, the embodiments described above include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent features. For example, even if some constituent features are deleted from all the constituent features shown in the above embodiment, if the problem to be solved by the invention can be solved and the effect of the invention can be obtained, then this constituent feature can be deleted. The configuration can be extracted as an invention. Furthermore, components of different embodiments may be combined as appropriate. The invention is not limited by its particular embodiments, except as by the appended claims.

Claims (3)

A wind tunnel test device that has an installation part for installing an object to be measured on the floor surface of a wind tunnel, and performs a test by applying an airflow blown into the wind tunnel toward the object to be measured installed on the installation part. And,
A plurality of airflow generating devices are arranged on a plane of the installation part so as to extend in a direction intersecting the direction of the airflow, and are arranged at predetermined intervals along the direction of the airflow. ,
The installation section is configured to be rotatable around a rotation axis perpendicular to a plane of the installation section, and includes a drive mechanism that rotates the installation section around the rotation axis, and a drive mechanism that rotates the installation section around the rotation axis. and a support member that supports the object to be measured in a floating state with respect to the plane of the installation section ,
When the airflow generating device is arranged to extend in a direction perpendicular to the airflow direction, the airflow generating device generates an airflow flowing in the same direction as the airflow,
When the installation part is rotated by a predetermined angle by the drive mechanism and the airflow generation device is arranged so as to extend diagonally with respect to the airflow direction, the airflow generation device is rotated in the airflow direction. A wind tunnel test device that is characterized by generating airflow that flows in an oblique direction. A wind tunnel test device that has an installation part for installing an object to be measured on the floor surface of a wind tunnel, and performs a test by applying an airflow blown into the wind tunnel toward the object to be measured installed on the installation part. And,
A plurality of airflow generating devices are arranged on a plane of the installation part so as to extend in a direction intersecting the direction of the airflow, and are arranged at predetermined intervals along the direction of the airflow. ,
The airflow generating device is configured to have different intervals in left and right regions in a direction intersecting the airflow direction with respect to a central axis of the object to be measured, which is installed along the airflow direction on a plane of the installation section. A wind tunnel test device characterized by being installed in. The wind tunnel test apparatus according to claim 1 or 2, wherein the airflow generating device is a plasma actuator.

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