CN106840272B - Dynamic temperature and pressure combined probe for measuring transonic three-dimensional unsteady flow field - Google Patents

Dynamic temperature and pressure combined probe for measuring transonic three-dimensional unsteady flow field Download PDF

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Publication number
CN106840272B
CN106840272B CN201710247056.0A CN201710247056A CN106840272B CN 106840272 B CN106840272 B CN 106840272B CN 201710247056 A CN201710247056 A CN 201710247056A CN 106840272 B CN106840272 B CN 106840272B
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plane
probe
hole
wedge
head
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CN201710247056.0A
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Chinese (zh)
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CN106840272A (en
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马宏伟
马融
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北京航空航天大学
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass

Abstract

The invention belongs to the technical field of temperature and pressure testing, and discloses a dynamic temperature and pressure combined probe for measuring a transonic three-dimensional unsteady flow field, which comprises a probe head and a support rod, wherein the probe head is of a wedge-top prismatic structure, a windward side comprises a wedge-top inclined plane, a front plane, a left side plane and a right side plane, a leeward side is a cylindrical arc surface, 4 dynamic pressure sensors and 1 dynamic temperature sensor are encapsulated in the leeward side, the head of the temperature sensor is exposed out of the wedge-top inclined plane, 4 pressure sensing holes which are not communicated with each other are formed in the windward side of the probe head and are respectively communicated with the 4 pressure sensors, and a sensor cable leads out of the tail of the probe through an inner channel of the support rod. Compared with the existing flow field test probe, the method can simultaneously measure the change of the transonic incoming flow temperature, the total pressure, the static pressure, the deflection angle, the pitch angle, the Mach number and the three-dimensional speed along with time through calibrating the calibration of the wind tunnel, and provides a means for efficiently, accurately and comprehensively measuring the transonic three-dimensional unsteady flow field for a turbine experiment.

Description

Dynamic temperature and pressure combined probe for measuring transonic three-dimensional unsteady flow field

Technical Field

The invention belongs to the technical field of temperature and pressure testing, relates to a dynamic temperature and dynamic pressure measuring device of a transonic three-dimensional unsteady flow field, and particularly relates to a dynamic temperature and pressure combined probe for measuring the transonic three-dimensional unsteady flow field, which is suitable for testing transonic three-dimensional dynamic flow fields at an inlet, an outlet and an interstage of an impeller machine.

Background

The aerodynamic performance of an aircraft engine compressor and a fan can be seriously influenced by the dynamic temperature and dynamic pressure combined distortion of an inlet flow field, even the engine stall and surge are caused, the influence of the dynamic temperature and dynamic pressure combined distortion is researched, and the measurement of transonic three-dimensional dynamic flow fields of transonic compressor inlets, interstage and rotor outlets with dynamic temperature and dynamic pressure combined distortion is urgently needed. At present, a dynamic pressure sensor can only be used for measuring dynamic pressure signals, a small inertia thermocouple is used for measuring dynamic temperature signals, a conventional steady-state pressure probe is used for measuring total pressure distribution, more three-dimensional unsteady flow field information cannot be provided, and a more targeted measuring means is urgently needed.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the problem of insufficient measuring means in experimental research on influence of dynamic temperature and dynamic pressure combined distortion, the invention provides the dynamic temperature and pressure combined probe for measuring the transonic three-dimensional unsteady flow field, which can simultaneously measure the temperature, total pressure, static pressure, deflection angle, pitch angle, Mach number and change of three-dimensional velocity components of transonic incoming flow along with time compared with the existing flow field test probe.

The technical solution of the invention is as follows:

1. a dynamic temperature and pressure combined probe for measuring a transonic three-dimensional unsteady flow field is characterized in that: the probe comprises a probe head (1) and a support rod (2), wherein the probe head (1) is of a wedge-top prismatic structure, 4 dynamic pressure sensors are packaged in the probe head, 1 dynamic temperature sensor is installed in the probe head, the windward side of the probe head (1) during probe measurement comprises a wedge-top inclined plane (3), a front plane (4), a left side plane (5) and a right side plane (6) which are symmetrical, and the leeward side is a cylindrical cambered surface (7); the head (8) of the dynamic temperature sensor is exposed out of the wedge top inclined plane; a pressure sensing hole is formed in a wedge top inclined plane (3) of a probe head (1) and is an upper hole (9), 1 pressure sensing hole is formed in each of a front plane (4), a symmetrical left plane (5) and a right plane (6) of the probe head (1) and is a middle hole (10), a left hole (11) and a right hole (12), and the 4 pressure sensing holes which are not communicated with each other are respectively communicated with 4 dynamic pressure sensors in the probe head (1).

2. Furthermore, the probe supporting rod (2) is a cylinder, and a circular pipeline is arranged in the probe supporting rod.

3. Furthermore, the axis of the cylindrical cambered surface (7) of the probe head (1) is superposed with the axis of the probe supporting rod (2).

4. Furthermore, the center line of the head (8) of the dynamic temperature sensor, which is exposed out of the wedge top inclined plane, of the probe head (1), the center line of the upper hole (9), the center line of the middle hole (10) and the axis of the probe support rod (2) are on the same plane, the left plane (5) and the right plane (6) are symmetrical along the plane, and the left hole (11) and the right hole (12) are symmetrically distributed along the plane.

5. Furthermore, the front plane (4) of the probe head (1) is 1-2 mm wide, and the included angle between the left plane (5) and the right plane (6) is 30-90 degrees.

6. Furthermore, the included angle between the wedge top inclined plane (3) of the probe head (1) and the axis of the probe support rod (2) is 28-54 degrees.

7. Furthermore, the dynamic temperature sensor is arranged at the inner rear part of the wedge top prism-shaped structure of the probe head part (1), and the head part (8) of the dynamic temperature sensor is exposed out of the wedge top inclined plane by 0.5 mm to 3 mm.

8. Furthermore, an upper hole (9) in the wedge top inclined plane (3) of the probe head (1) is arranged at the front lower part of the temperature sensor head (8), the diameter of the upper hole (9) is 0.6 mm to 1.5 mm, and the distance between the circle center and the bottom edge of the wedge top inclined plane (3) is 1 mm to 5 mm.

9. Furthermore, the diameters of a middle hole (10), a left hole (11) and a right hole (12) of the probe head (1) are 0.6 mm to 1.5 mm, and the distance between the center of the middle hole (10) and the bottom edge of the wedge top inclined plane (3) is 1 mm to 5 mm.

10. Furthermore, cables (13) of the dynamic pressure sensor and the dynamic temperature sensor are led out from the tail part of the probe through pipelines in the probe supporting rod (2).

The invention has the beneficial effects that:

compared with the existing transonic flow field test probe, the transonic three-dimensional unsteady flow field test probe can simultaneously measure the transonic incoming flow temperature, the total pressure, the static pressure, the deflection angle, the pitch angle, the Mach number and the change of the three-dimensional speed along with time through calibration of the wind tunnel, and provides a means for efficiently, accurately and comprehensively measuring the transonic three-dimensional unsteady flow field for a turbine experiment.

Drawings

Fig. 1 is a schematic structural diagram of a dynamic temperature and pressure combination probe for measuring a transonic three-dimensional unsteady flow field in an embodiment of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a view from direction a of fig. 2.

Wherein: 1-probe head, 2-probe support rod, 3-wedge top inclined plane, 4-front plane, 5-left side plane, 6-right side plane, 7-cylindrical arc surface, 8-dynamic temperature sensor head, 9-upper hole, 10-middle hole, 11-left hole, 12-right hole and 13-cable.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

As shown in fig. 1, the embodiment introduces a dynamic temperature and pressure combined probe for measuring a transonic three-dimensional unsteady flow field, which includes a probe head (1) and a support rod (2), wherein the probe head (1) is of a wedge-top prism-shaped structure, the diameter of an external circle is 6 mm, the height of the probe head (1) is 30 mm, 4 dynamic pressure sensors are packaged in the probe head, 1 dynamic temperature sensor is installed in the probe head, a windward side of the probe head (1) during probe measurement includes a wedge-top inclined plane (3), a front plane (4), a symmetrical left plane (5) and a right plane (6), and a leeward side is a cylindrical arc surface (7); the head (8) of the dynamic temperature sensor is exposed out of the wedge top inclined plane; a pressure sensing hole is formed in a wedge top inclined plane (3) of a probe head (1) and is an upper hole (9), 1 pressure sensing hole is formed in each of a front plane (4), a symmetrical left plane (5) and a right plane (6) of the probe head (1) and is a middle hole (10), a left hole (11) and a right hole (12), and the 4 pressure sensing holes which are not communicated with each other are respectively communicated with 4 dynamic pressure sensors in the probe head (1).

The probe supporting rod (2) is a cylinder with the diameter of 8 mm, and a circular channel with the diameter of 5 mm is arranged in the probe supporting rod.

The axis of the cylindrical cambered surface (7) of the probe head (1) is superposed with the axis of the probe supporting rod (2).

The center line of the head (8) of the dynamic temperature sensor, which is exposed out of the wedge top inclined plane, of the probe head (1), the center line of the upper hole (9), the center line of the middle hole (10) and the axis of the probe support rod (2) are on the same plane, the left plane (5) and the right plane (6) are symmetrical along the plane, and the left hole (11) and the right hole (12) are symmetrically distributed along the plane.

The front plane (4) of the probe head (1) is 1 mm wide, and the included angle between the left plane (5) and the right plane (6) is 40 degrees. The circle centers of the left hole (11), the right hole (12) and the middle hole (10) are on the same plane, the distance between the circle center of the left hole (11) and the left side of the front plane (4) is 3 mm, and the distance between the circle center of the right hole (12) and the right side of the front plane (4) is 3 mm.

The included angle between the wedge top inclined plane (3) of the probe head (1) and the axis of the probe supporting rod (2) is 40 degrees.

The dynamic temperature sensor is arranged at the inner rear part of the wedge top prism-shaped structure of the probe head (1), and the head (8) of the dynamic temperature sensor is exposed out of the wedge top inclined plane by 1 mm.

An upper hole (9) on the wedge top inclined plane (3) of the probe head (1) is arranged at the front lower part of the temperature sensor head (8), the diameter of the upper hole (9) is 0.6 mm, and the distance between the circle center and the bottom edge of the wedge top inclined plane (3) is 1 mm.

The diameters of a middle hole (10), a left hole (11) and a right hole (12) of the probe head (1) are 0.6 mm, and the distance between the center of the middle hole (10) and the bottom edge of the wedge top inclined plane (3) is 1 mm.

The cables (13) of the dynamic pressure sensor and the dynamic temperature sensor are led out from the tail part of the probe through a pipeline in the probe supporting rod (2).

The dynamic temperature and pressure combined probe for measuring the transonic three-dimensional unsteady flow field introduced in the embodiment of the invention can obtain calibration data through transonic speed calibration wind tunnel calibration. When a transonic three-dimensional unsteady flow field is actually measured, 4 dynamic pressure sensors and 1 dynamic temperature sensor of the dynamic temperature and pressure combined probe simultaneously measure unsteady pressure and unsteady temperature data respectively sensed, the obtained transonic calibration wind tunnel calibration data is utilized to perform data processing, and the change of transonic incoming flow temperature, total pressure, static pressure, deflection angle, pitch angle, Mach number and three-dimensional speed along with time can be obtained.

Claims (1)

1. A dynamic temperature and pressure combined probe for measuring a transonic three-dimensional unsteady flow field is characterized in that: the probe comprises a probe head (1) and a support rod (2), wherein the probe head (1) is of a wedge-top prismatic structure, 4 dynamic pressure sensors are packaged in the probe head, 1 dynamic temperature sensor is installed in the probe head, the windward side of the probe head (1) during probe measurement comprises a wedge-top inclined plane (3), a front plane (4), a left side plane (5) and a right side plane (6) which are symmetrical, and the leeward side is a cylindrical cambered surface (7); the head (8) of the dynamic temperature sensor is exposed out of the wedge top inclined plane; a pressure sensing hole is formed in a wedge top inclined plane (3) of the probe head (1) and is an upper hole (9), 1 pressure sensing hole is formed in each of a front plane (4), a symmetrical left plane (5) and a right plane (6) of the probe head (1) and is a middle hole (10), a left hole (11) and a right hole (12), and the 4 pressure sensing holes which are not communicated with each other are respectively communicated with 4 dynamic pressure sensors in the probe head (1); the device is used for simultaneously measuring the change of temperature, total pressure, static pressure, deflection angle, pitch angle, Mach number and three-dimensional velocity component of transonic incoming flow along with time;
the probe supporting rod (2) is a cylinder, and a circular pipeline is arranged in the probe supporting rod;
the axis of the cylindrical cambered surface (7) of the probe head (1) is superposed with the axis of the probe supporting rod (2);
the center line of the head (8) of the dynamic temperature sensor, which is exposed out of the wedge top inclined plane, of the probe head (1), the center line of the upper hole (9), the center line of the middle hole (10) and the axis of the probe support rod (2) are on the same plane, the left plane (5) and the right plane (6) are symmetrical along the plane, and the left hole (11) and the right hole (12) are symmetrically distributed along the plane;
the front plane (4) of the probe head (1) is 1-2 mm wide, and the included angle between the left plane (5) and the right plane (6) is 30-90 degrees;
the included angle between the wedge top inclined plane (3) of the probe head (1) and the axis of the probe support rod (2) is 28-54 degrees;
the dynamic temperature sensor is arranged at the inner rear part of the wedge top prism-shaped structure of the probe head (1), and the head (8) of the dynamic temperature sensor is exposed out of the wedge top inclined plane by 0.5 mm to 3 mm;
an upper hole (9) on the wedge top inclined plane (3) of the probe head (1) is arranged at the front lower part of the dynamic temperature sensor head (8), the diameter of the upper hole (9) is 0.6 mm to 1.5 mm, and the distance between the circle center and the bottom edge of the wedge top inclined plane (3) is 1 mm to 5 mm;
the diameters of a middle hole (10), a left hole (11) and a right hole (12) of the probe head (1) are 0.6 mm to 1.5 mm, and the distance between the center of the middle hole (10) and the bottom edge of the wedge top inclined plane (3) is 1 mm to 5 mm;
cables (13) of the dynamic pressure sensor and the dynamic temperature sensor are led out from the tail part of the probe through a pipeline in the probe supporting rod (2).
CN201710247056.0A 2017-04-17 2017-04-17 Dynamic temperature and pressure combined probe for measuring transonic three-dimensional unsteady flow field CN106840272B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994020014A1 (en) * 1993-03-05 1994-09-15 Sahagen Armen N Probe for monitoring a fluid medium
DE4337402A1 (en) * 1993-10-26 1995-04-27 Mannesmann Ag Probe for measuring pressure and temperature profiles
CN103884467A (en) * 2014-04-14 2014-06-25 中国科学院工程热物理研究所 Plasma pressure probe and system for measuring pressure by utilizing plasma pressure probe
CN104048808A (en) * 2013-03-14 2014-09-17 中国科学院工程热物理研究所 Dynamic entropy probe
CN106404409A (en) * 2016-11-16 2017-02-15 中国科学院工程热物理研究所 Probe assembly suitable for strong-shearing unsteady flow test of aeroengine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994020014A1 (en) * 1993-03-05 1994-09-15 Sahagen Armen N Probe for monitoring a fluid medium
DE4337402A1 (en) * 1993-10-26 1995-04-27 Mannesmann Ag Probe for measuring pressure and temperature profiles
CN104048808A (en) * 2013-03-14 2014-09-17 中国科学院工程热物理研究所 Dynamic entropy probe
CN103884467A (en) * 2014-04-14 2014-06-25 中国科学院工程热物理研究所 Plasma pressure probe and system for measuring pressure by utilizing plasma pressure probe
CN106404409A (en) * 2016-11-16 2017-02-15 中国科学院工程热物理研究所 Probe assembly suitable for strong-shearing unsteady flow test of aeroengine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
基于数字信号处理功能实现的动态探针研制;姚君;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》;20160215(第2期);正文第4-27页 *
非定常流测量用薄膜热电阻温度探针的性能研究;彭建等;《航空动力学报》;19920731;第7卷(第3期);第248-252页 *

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