CN206459810U - Porous media viscosity factor and inertial resistance coefficient measurement apparatus - Google Patents
Porous media viscosity factor and inertial resistance coefficient measurement apparatus Download PDFInfo
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- CN206459810U CN206459810U CN201720186505.0U CN201720186505U CN206459810U CN 206459810 U CN206459810 U CN 206459810U CN 201720186505 U CN201720186505 U CN 201720186505U CN 206459810 U CN206459810 U CN 206459810U
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- pressure
- porous media
- resistance coefficient
- inertial resistance
- measurement apparatus
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Abstract
The utility model discloses a kind of porous media material viscosity factor and inertial resistance coefficient measurement apparatus, it is characterised in that including the fluid generating apparatus being sequentially connected, flow stabilisation device, volume control device and experiment pipeline；The experiment pipeline includes：Test material clamping device, for clamping porous media material；High pressure scanning means, it is arranged on the front end of test material clamping device, to measure the pressure before fluid flow through porous media；Low-pressure scanning means, it is arranged on the front end of test material clamping device, to measure the pressure after fluid flow through porous media；Impeller tachymeter, for measuring rate of flow of fluid in experiment pipeline.The utility model is by measuring the flow velocity of fluid and flowing through the pressure difference before and after porous media, with regard to that can calculate viscosity factor and inertial resistance coefficient, and computational methods are simple, and precision is high, and the apparatus structure for obtaining measurement parameter is compact, with low cost, using very convenient.
Description
Technical field
The utility model belongs to fluid hydrodynamics field of measuring technique, more particularly to a kind of porous media viscous drag
Coefficient and inertial resistance coefficient measurement apparatus.
Background technology
Porous media, the skeleton being made up of solid matter and the slight void institute that a large amount of dense clusters are separated into by skeleton
The material of composition.Slight void in porous media is probably what is interconnected, it is also possible to which part connection, part are not connected
's.Due to porous media structure characteristic, the research for the drag characteristic of porous media is also very deficient, and there is presently no any
One technology can accurately measure the resistance coefficient and inertia coeffeicent of porous media, and the application to porous media is brought very
It is more inconvenient.Existing measurement apparatus is mostly fairly simple, and measurement error is big, and the accuracy to result is affected greatly.
Utility model content
The purpose of this utility model is to overcome existing porous media viscosity factor and inertial resistance coefficient measurement apparatus
There is provided a kind of porous media viscosity factor and inertial resistance coefficient measurement apparatus for the low defect of complicated, precision.
The utility model provide technical scheme be：
A kind of porous media material viscosity factor and inertial resistance coefficient measurement apparatus, including the fluid being sequentially connected
Generating means, flow stabilisation device, volume control device and experiment pipeline；The experiment pipeline includes：
Test material clamping device, for clamping porous media material；
High pressure scanning means, it is arranged on the front end of test material clamping device, to measure fluid flow through porous media
Preceding pressure；
Low-pressure scanning means, it is arranged on the front end of test material clamping device, to measure fluid flow through porous media
Pressure afterwards；
Impeller tachymeter, for measuring rate of flow of fluid in experiment pipeline.
Preferably, the fluid generating apparatus is air compressor.
Preferably, the flow stabilisation device includes the pressure-reducing valve of three series connection.
Preferably, the volume control device uses choke valve.
Preferably, described 8 pressure dispatch tubes of high pressure scanning means, the pressure dispatch tube is solid installed in pressure pipe
Determine on device, the pressure pipe fixing device is provided centrally with cross bracket, be provided with eight peaces altogether on cross bracket
Hole is filled, for installing 8 pressure dispatch tubes.
Preferably, described 8 pressure dispatch tubes of low-pressure scanning means, the pressure dispatch tube is solid installed in pressure pipe
Determine on device, the pressure pipe fixing device is provided centrally with cross bracket, be provided with eight peaces altogether on cross bracket
Hole is filled, for installing 8 pressure dispatch tubes.
The beneficial effects of the utility model are：Porous media material viscosity factor and inertia that the utility model is provided
Resistance coefficient is measured and method, by measuring the flow velocity of fluid and flowing through the pressure difference before and after porous media, with regard to that can calculate viscosity
Resistance coefficient and inertial resistance coefficient, computational methods are simple, and precision is high, and the apparatus structure for obtaining measurement parameter is compact, and cost is low
It is honest and clean, using very convenient.
Brief description of the drawings
Fig. 1 is that porous media material viscosity factor described in the utility model and inertial resistance coefficient measurement apparatus are total
Body structural representation.
Fig. 2 is experiment pipeline structure schematic diagram described in the utility model.
Fig. 3 is pressure pipe fixture structure schematic diagram described in the utility model.
Fig. 4 is porous media material viscosity factor described in the utility model and inertial resistance coefficient measuring method stream
Cheng Tu.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
As shown in figure 1, the utility model provides a kind of porous media material viscosity factor and inertial resistance coefficient
Measurement apparatus, including source of the gas generation device, source of the gas stabilising arrangement, volume control device and the experiment pipeline being sequentially connected.Wherein,
The source of the gas generation device can be continued using the air compressor 110 of 360 liters of a compression per minute for whole measuring system
Fluid is constantly provided.
The gas and unstable, the output pressure that can be stablized by source of the gas stabilising arrangement produced from air compressor 110,
It is easy to the measurement of subsequent gases flow velocity.The source of the gas stabilising arrangement realizes that regulation is stable using the pressure-reducing valve 120 of three series connection
Air pressure.
Volume control device, can be with the gas flow in control piper using a choke valve 130.
As shown in Fig. 2 experiment pipeline 140 is core of the present utility model, including the flow transition dress being sequentially arranged
Put 141, impeller tachymeter 142, high pressure scanning means 143, test material clamping device 144 and low-pressure scanning means
145.The one end of flow transition device 141 is connected with choke valve 130, is allowed airflow into experiment pipeline 140.Impeller tachymeter
142 can to experiment pipeline 140 in fluid velocity measurement.High pressure scanning means 143 includes 8 a diameter of 2 millimeters
Pressure dispatch tube.As shown in figure 3, pressure dispatch tube is arranged on 146 on pressure pipe fixing device.The pressure pipe fixing device
146 are provided centrally with cross bracket, are provided with eight mounting holes altogether on cross bracket, for installing 8 pressure transmission
Pipe.Pressure conduction to PSI systems is read pressure value, by taking 8 pressure dispatch tubes by pressure dispatch tube by PSI systems
Being averaged for data obtain pressure value, that is, obtain the pressure value before airflow passes porous media.In test material clamping device 144
For installation and clamping porous media, air-flow is set to need to flow through the how empty medium when flowing in testing pipeline 140.Low-pressure is swept
Imaging apparatus 145 is identical with the structure of high pressure scanning means 143, can measure the pressure value obtained after airflow passes porous media.
As shown in figure 4, the porous media material viscosity factor and inertial resistance coefficient that are provided using the utility model
The step of measurement apparatus is measured is as follows：
Step one S110, in experiment pipeline porous media is not installed, gives certain air mass flow, swept using high pressure
Imaging apparatus 143 and the measurement fluid of low-pressure scanning means 145 flow through the pressure drop Δ p before and after measurement pipeline1, then by porous media
Material is encased in measurement pipeline, gives identical fluid flow, and measurement fluid flows through the pressure drop Δ p before and after measurement pipeline2, with
And the flow velocity v of fluid, and obtain pressure drop Δ p=Δs p caused by porous media material by calculating2-Δp1。
Step 2 S120, pressure drop Δ p and speed v that experiment is obtained are fitted to quadratic polynomial
Δ p=a1v2+a2v
Therefore, it is possible to obtain parameter a1And a2Value.
Step 3 S130, because the porous media equation of momentum in source item be unit length pressure drop, i.e.,：
Δ n is the thickness of porous media material in formula.
Joint porous media material momentum source term
Carrying out derivation can draw：
The α of viscosity factor 1/ expression formula is：
Inertial resistance coefficient c2Expression formula be：
μ is the dynamic viscosity of air in formula, and ρ is the density of air.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed to use, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (6)
1. a kind of porous media material viscosity factor and inertial resistance coefficient measurement apparatus, it is characterised in that including successively
Fluid generating apparatus, flow stabilisation device, volume control device and the experiment pipeline of connection；The experiment pipeline includes：
Test material clamping device, for clamping porous media material；
High pressure scanning means, it is arranged on the front end of test material clamping device, to measure before fluid flow through porous media
Pressure；
Low-pressure scanning means, it is arranged on the front end of test material clamping device, to measure after fluid flow through porous media
Pressure；
Impeller tachymeter, for measuring rate of flow of fluid in experiment pipeline.
2. porous media material viscosity factor according to claim 1 and inertial resistance coefficient measurement apparatus, it is special
Levy and be, the fluid generating apparatus is air compressor.
3. porous media material viscosity factor according to claim 2 and inertial resistance coefficient measurement apparatus, it is special
Levy and be, the flow stabilisation device includes the pressure-reducing valve of three series connection.
4. porous media material viscosity factor according to claim 3 and inertial resistance coefficient measurement apparatus, it is special
Levy and be, the volume control device uses choke valve.
5. porous media material viscosity factor according to claim 4 and inertial resistance coefficient measurement apparatus, it is special
Levy and be, described 8 pressure dispatch tubes of high pressure scanning means, the pressure dispatch tube is arranged on pressure pipe fixing device,
The pressure pipe fixing device is provided centrally with cross bracket, is provided with eight mounting holes altogether on cross bracket, is used for
8 pressure dispatch tubes are installed.
6. porous media material viscosity factor according to claim 4 and inertial resistance coefficient measurement apparatus, it is special
Levy and be, described 8 pressure dispatch tubes of low-pressure scanning means, the pressure dispatch tube is arranged on pressure pipe fixing device,
The pressure pipe fixing device is provided centrally with cross bracket, is provided with eight mounting holes altogether on cross bracket, is used for
8 pressure dispatch tubes are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720186505.0U CN206459810U (en) | 2017-02-28 | 2017-02-28 | Porous media viscosity factor and inertial resistance coefficient measurement apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720186505.0U CN206459810U (en) | 2017-02-28 | 2017-02-28 | Porous media viscosity factor and inertial resistance coefficient measurement apparatus |
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| CN201720186505.0U Expired - Fee Related CN206459810U (en) | 2017-02-28 | 2017-02-28 | Porous media viscosity factor and inertial resistance coefficient measurement apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706268A (en) * | 2017-02-28 | 2017-05-24 | 吉林大学 | Method and device for measuring viscous resistance coefficient and inertial resistance coefficient of porous medium |
| CN108223078A (en) * | 2017-12-31 | 2018-06-29 | 无锡威孚力达催化净化器有限责任公司 | A kind of method using catalytic cleaner pressure drop assay optimization CFD calculation of backpressure |
| CN109765028A (en) * | 2018-12-18 | 2019-05-17 | 华南农业大学 | A kind of device and measurement ventilation resistance method of measurement vegetable and fruit packaging ventilation resistance |
-
2017
- 2017-02-28 CN CN201720186505.0U patent/CN206459810U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706268A (en) * | 2017-02-28 | 2017-05-24 | 吉林大学 | Method and device for measuring viscous resistance coefficient and inertial resistance coefficient of porous medium |
| CN108223078A (en) * | 2017-12-31 | 2018-06-29 | 无锡威孚力达催化净化器有限责任公司 | A kind of method using catalytic cleaner pressure drop assay optimization CFD calculation of backpressure |
| CN109765028A (en) * | 2018-12-18 | 2019-05-17 | 华南农业大学 | A kind of device and measurement ventilation resistance method of measurement vegetable and fruit packaging ventilation resistance |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170901 Termination date: 20190228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |