CN105758614A - Apparatus used for wind tunnel measurement building model surface static pressure and wind pressure coefficient and method thereof - Google Patents
Apparatus used for wind tunnel measurement building model surface static pressure and wind pressure coefficient and method thereof Download PDFInfo
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- CN105758614A CN105758614A CN201610259457.3A CN201610259457A CN105758614A CN 105758614 A CN105758614 A CN 105758614A CN 201610259457 A CN201610259457 A CN 201610259457A CN 105758614 A CN105758614 A CN 105758614A
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- 230000003068 static effect Effects 0.000 title claims abstract description 82
- 238000005259 measurement Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 101
- 239000007787 solid Substances 0.000 claims abstract description 5
- 210000003437 trachea Anatomy 0.000 claims description 12
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 210000005239 tubule Anatomy 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 abstract description 9
- 238000011160 research Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses an apparatus used for wind tunnel measurement building model surface static pressure and a wind pressure coefficient and a method thereof and belongs to the building technology field. A wind tunnel is included. An external portion of the wind tunnel is provided with a first Dwyer manometer used for measuring a reference height dynamic pressure value and a second Dwyer manometer used for measuring a static pressure value of a building surface test point relative to a reference height respectively. The first Dwyer manometer is connected to a first pitot tube. A total pressure tube of the first pitot tube passes through a floor of the wind tunnel and is extended to the reference height. A static pressure tube of the first pitot tube is connected to the first Dwyer manometer through an air tube. The second Dwyer manometer is connected to a static pressure tube of the second pitot tube through the air tube. A total pressure tube of the second pitot tube passes through the floor of the wind tunnel and is extended to the reference height. The Dwyer manometer is connected to a static pressure test tube whose tail end is in a ''V'' shape through the air tube. In the invention, a building model can be made into a solid building model; measurable building types are enriched, especially such as a residence type or a ventilation test of a building with a low budget.
Description
Technical field
The present invention relates to refrigerating plant field, particularly to a kind of device and method for wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres.
Background technology
Coefficient of wind pres is that research prediction calculates the indispensable data of gravity-flow ventilation in building.It must be hollow for being conventionally used to BUILDINGS MODELS when measurement static pressure and coefficient of wind pres, and BUILDINGS MODELS needs enough inner spaces to hold substantial amounts of metal tube plug and to be connected to manometric plastic flexible pipe, such BUILDINGS MODELS is larger in size, a limited number of BUILDINGS MODELS can only be placed in a limited wind tunnel test working region, BUILDINGS MODELS for limited quantity can not react the impact on coefficient of wind pres of Adjacent Buildings and Site environment, this causes that measurement result is inaccurate, it is impossible to for testing the planned project in city and large-scale exploration project.
BUILDINGS MODELS cost for traditional measurement static pressure and coefficient of wind pres method is high, wind-tunnel measurements somewhat expensive, is not suitable for the ventilation test and the research that are similar to house class or low budget building.
Summary of the invention
In order to make up above deficiency, the invention provides a kind of device for wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres and method of testing.The present invention tests device, convenient test, and can react Adjacent Buildings and Site environment to coefficient of wind pres influence factor, is suitable to be similar to the ventilation test of house class or low budget building and research.
The technical scheme is that
A kind of device for wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres, including wind-tunnel 1, described wind-tunnel 1 is outside be respectively provided with measure the first Dwyer manometer 4 with reference to height dynamic pressure value with for measuring relative the second Dwyer manometer 10 with reference to static pressure highly of building surface test point；Described first Dwyer manometer 4 is connected to the first pitot tube 3, and the ram-air pipe of described first pitot tube 3 extends to reference to height through the floor of wind-tunnel 1；The static tube of described first pitot tube 3 is connected to the first Dwyer manometer 4 by trachea 5；Described second Dwyer manometer 10 connects the static tube of the second pitot tube 6 by trachea 5, and the ram-air pipe of described second pitot tube 6 extends to reference to height through the floor of wind-tunnel 1；Described second Dwyer manometer 10 connects static pressure test pipe 8 by trachea 5, and described static pressure test pipe 8 end is V-shaped.
Preferably, the " V " shape angle of described static pressure test pipe 8 end is 100-130 °.V " clevis angle is within the scope of this, and the accuracy of measurement is higher；V " clevis angle is excessive or the too small accuracy that all can affect test result.
Further, the " V " shape angle of described static pressure test pipe 8 end is 120 °.Empirical tests, when " V " shape angle is 120 °, i.e. when static pressure test pipe 8 end and test point angle are 30 °, measures the most accurate, and error is very little.
Preferably, described static pressure test pipe 8 is made up of rustless steel tubule.
Further, described static pressure test pipe 8 is movably arranged.Static pressure test pipe 8 is movably arranged the static pressure and coefficient of wind pres of being easy to measure different test point.
Preferably, described trachea 5 is plastic flexible pipe.Trachea 5 is plastic flexible pipe, it is simple to connect.
Preferably, described reference altitude is the height of the height of local weather station or airport survey record wind or surveying record wind frequency evidence.
Preferably, described reference altitude is 10 meters.
Adopt the described method for wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and the device to test BUILDINGS MODELS outer surface test point coefficient of wind pres of coefficient of wind pres: solid BUILDINGS MODELS is positioned over described wind-tunnel 1 internal, the test point 7 of the contact BUILDINGS MODELS outer surface of the ending vertical of described static pressure test pipe 8；The reference height dynamic pressure value of the BUILDINGS MODELS outer surface test point 7 relatively recorded divided by the first Dwyer manometer 4 with reference to the static pressure of height of the BUILDINGS MODELS outer surface test point 7 that the second Dwyer manometer 10 records, is the coefficient of wind pres of BUILDINGS MODELS outer surface test point 7.
Preferably, in test process, in order to keep the test point 7 of the contact contact BUILDINGS MODELS outer surface of static pressure test pipe 8 ending vertical, adopt top or side that static pressure test pipe 8 is fixed in BUILDINGS MODELS building to be measured by fixation adhesive tape 9.Static pressure test pipe 8 is fixed, can be completely secured in test process contact vertical with test point of the end of static pressure test pipe 8.
The invention have the benefit that
In the present invention device for wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres, static pressure test pipe end is V-shaped, and static pressure test pipe does not need guiding through inside BUILDINGS MODELS, only contacts the outer surface of BUILDINGS MODELS.So, BUILDINGS MODELS can make the solid BUILDINGS MODELS of vast scale small size, not only greatly reduce the time manufacturing BUILDINGS MODELS and expense, and large number of BUILDINGS MODELS can be placed in a limited wind-tunnel measurements working region, can simulate or build the wind field being subject to Building Settlement around Foundation more accurate, make wind tunnel test result more accurately with reliable.Expand scope and the function of wind tunnel test and research greatly.
It addition, assembly of the invention, only can measure multiple small size BUILDINGS MODELS with a static pressure test pipe and multiple different measuring point can be measured on a BUILDINGS MODELS, substantially increasing function and the efficiency of wind tunnel test.
The present invention improves the wind-tunnel ability for building ventilation testing research, enriches ventilation test and the research of the building type especially house class that can survey or low budget building.Compared with prior art, the present invention have applied widely, work efficiency is high, use cost is low, data feature more accurately.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the present invention structural representation for wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and the device of coefficient of wind pres；It wherein dashed circle is magnified partial view；
Fig. 2 is torrid zone Midst density housing development model；
Fig. 3 is the plane graph of house 58 in Fig. 2 model and 18 locations drawing of windowing thereof；
Fig. 4 is the coefficient of wind pres figure recorded on No. 3 of house 58 in Fig. 2 model and No. 18 wind directions of windowing.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, a kind of device for wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres, including wind-tunnel 1, wind-tunnel 1 is outside be respectively provided with measure the first Dwyer manometer 4 with reference to height dynamic pressure value with for measuring relative the second Dwyer manometer 10 with reference to static pressure highly of building surface test point.
First Dwyer manometer 4 is connected to the first pitot tube 3, and the ram-air pipe of the first pitot tube 3 extends to reference to height through the floor of wind-tunnel 1；The static tube of the first pitot tube 3 passes through trachea 5(plastic flexible pipe) it is connected to the first Dwyer manometer 4.During test, the pitot hole alignment airflow direction of the first pitot tube 3.
Second Dwyer manometer 10 is by trachea 5(plastic flexible pipe) connect the static tube of the second pitot tube 6, the ram-air pipe of the second pitot tube 6 extends to reference to height through the floor of wind-tunnel 1；During test, the pitot hole alignment airflow direction of the second pitot tube 6.Second Dwyer manometer 10 connects static pressure test pipe 8 by trachea 5, and static pressure test pipe 8 end is V-shaped；The " V " shape angle of static pressure test pipe 8 end is 100-130 °.V " clevis angle is within the scope of this, and the accuracy of measurement is higher；V " clevis angle is excessive or the too small accuracy that all can affect test result.Most preferred, the " V " shape angle of static pressure test pipe 8 end is 120 °.Empirical tests, when " V " shape angle is 120 °, i.e. when static pressure test pipe 8 end and test point angle are 30 °, measures the most accurate, and error is very little.For the ease of measuring static pressure and the coefficient of wind pres of different test point, static pressure test pipe 8 is movably arranged；When testing the coefficient of wind pres of certain test point, static pressure test pipe 8 is fixed on top or the side of BUILDINGS MODELS, to ensure contact vertical with test point of the end of static pressure test pipe 8 in test process.It addition, static pressure test pipe 8 is made by the rustless steel tubule that diameter is 1.6mm, this static pressure test pipe volume is little lightweight, can directly fix with fixation adhesive tape 9, and fixed form is simple and efficient.Certainly, the diameter of static pressure test pipe 8 also adjustable.
Wherein, reference altitude is the height of the height of local weather station or airport survey record wind or surveying record wind frequency evidence.In the present embodiment, reference altitude is 10 meters.
Adopt the method for wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and the device to test BUILDINGS MODELS outer surface test point coefficient of wind pres of coefficient of wind pres: solid BUILDINGS MODELS is positioned over wind-tunnel 1 internal, the test point 7 of the contact BUILDINGS MODELS outer surface of the ending vertical of static pressure test pipe 8；The reference height dynamic pressure value of the BUILDINGS MODELS outer surface test point 7 relatively recorded divided by the first Dwyer manometer 4 with reference to the static pressure of height of the BUILDINGS MODELS outer surface test point 7 that the second Dwyer manometer 10 records, is the coefficient of wind pres of BUILDINGS MODELS outer surface test point 7.
In test process, in order to keep the test point 7 of the contact contact BUILDINGS MODELS outer surface of static pressure test pipe 8 ending vertical, adopt top or side that static pressure test pipe 8 is fixed in BUILDINGS MODELS building to be measured by fixation adhesive tape 9.Static pressure test pipe 8 is fixed, can be completely secured in test process contact vertical with test point of the end of static pressure test pipe 8.
Application Example
Fig. 2 is torrid zone Midst density housing development model, and Fig. 3 is the plane graph of house 58 in Fig. 2 model and 18 locations drawing of windowing thereof.Adopt the present invention for the device of wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres to 18 coefficient of wind pres windowed of house 58 in this BUILDINGS MODELS；Wherein, 3 and window 8 for the coefficient of wind pres on 18 wind directions as shown in Figure 4 (other window coefficient of wind pres omit) are windowed.According to local wind frequency evidence and all upper coefficient of wind pres of windowing, being calculated the ventilation situation in house 58 by the gravity-flow ventilation software of computer, the ventilation situation calculating house 58 is as shown in table 1.
The ventilation situation of house 58 in table 1 model
Claims (10)
1. the device for wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres, including wind-tunnel (1), it is characterised in that: described wind-tunnel (1) is outside to be respectively provided with and measures the first Dwyer manometer (4) with reference to height dynamic pressure value and relative the second Dwyer manometer (10) with reference to static pressure highly that is used for measuring building surface test point；Described first Dwyer manometer (4) is connected to the first pitot tube (3), and the ram-air pipe of described first pitot tube (3) extends to reference to height through the floor of wind-tunnel (1)；The static tube of described first pitot tube (3) is connected to the first Dwyer manometer (4) by trachea (5)；Described second Dwyer manometer (10) connects the static tube of the second pitot tube (6) by trachea (5), and the ram-air pipe of described second pitot tube (6) extends to reference to height through the floor of wind-tunnel (1)；Described second Dwyer manometer (10) connects static pressure test pipe (8) by trachea (5), and described static pressure test pipe (8) end is V-shaped.
2. as claimed in claim 1 for the device of wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres, it is characterised in that: the " V " shape angle of described static pressure test pipe (8) end is 100-130 °.
3. as claimed in claim 2 for the device of wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres, it is characterised in that: the " V " shape angle of described static pressure test pipe (8) end is 120 °.
4. for the device of wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres as described in any one of claim 1-3, it is characterised in that: described static pressure test pipe (8) is made up of rustless steel tubule.
5. as claimed in claim 4 for the device of wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres, it is characterised in that: described static pressure test pipe (8) is movably arranged.
6. as claimed in claim 1 for the device of wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres, it is characterised in that: described trachea (5) is plastic flexible pipe.
7. as claimed in claim 1 for the device of wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres, it is characterised in that: described reference altitude is the height of the height of local weather station or airport survey record wind or surveying record wind frequency evidence.
8. for the device of wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and coefficient of wind pres as described in claim 1 or 7, it is characterised in that: described reference altitude is 10 meters.
9. adopt the method as claimed in claim 1 for wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and the device to test BUILDINGS MODELS outer surface test point coefficient of wind pres of coefficient of wind pres, it is characterized in that: solid BUILDINGS MODELS is positioned over described wind-tunnel (1) internal, the test point (7) of the contact BUILDINGS MODELS outer surface of the ending vertical of described static pressure test pipe (8)；The reference height dynamic pressure value of BUILDINGS MODELS outer surface test point (7) relatively recorded divided by the first Dwyer manometer (4) with reference to the static pressure of height of BUILDINGS MODELS outer surface test point (7) that the second Dwyer manometer (10) records, is the coefficient of wind pres of BUILDINGS MODELS outer surface test point (7).
10. the method for BUILDINGS MODELS outer surface test point coefficient of wind pres as claimed in claim 9, it is characterized in that: in test process, in order to keep the test point (7) of the contact contact BUILDINGS MODELS of static pressure test pipe (8) ending vertical, adopt top or side that static pressure test pipe (8) is fixed in BUILDINGS MODELS building to be measured by fixation adhesive tape (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610259457.3A CN105758614B (en) | 2016-04-25 | 2016-04-25 | For wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and the device and method of coefficient of wind pres |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610259457.3A CN105758614B (en) | 2016-04-25 | 2016-04-25 | For wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and the device and method of coefficient of wind pres |
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| CN105758614A true CN105758614A (en) | 2016-07-13 |
| CN105758614B CN105758614B (en) | 2018-03-13 |
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| CN201610259457.3A Expired - Fee Related CN105758614B (en) | 2016-04-25 | 2016-04-25 | For wind-tunnel measurements BUILDINGS MODELS Surface Static Pressure and the device and method of coefficient of wind pres |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106404341A (en) * | 2016-09-07 | 2017-02-15 | 甘肃路桥建设集团有限公司 | Monitoring collection instrument of impact force of running vehicle on two sides of road and railway tunnels |
| CN106500947A (en) * | 2016-12-15 | 2017-03-15 | 郑州大学 | A kind of assay device of utilization garage sailing test architecture coefficient of wind pres and method |
| CN107764503A (en) * | 2016-08-16 | 2018-03-06 | 中国电力科学研究院 | A kind of Pressure testing apparatus and method based on tail-rotor formula fairing wind pressure sensor |
| CN108225721A (en) * | 2018-04-03 | 2018-06-29 | 广州大学 | A kind of wind tunnel experiment surveys the method with reference to wind speed |
| CN108871725A (en) * | 2018-06-11 | 2018-11-23 | 广州大学 | A kind of modification method referring to static pressure for wind tunnel experiment |
| CN109061219A (en) * | 2018-07-18 | 2018-12-21 | 湖南大学 | Actual measurement device and method with reference to static pressure, wind speed and direction is provided under typhoon environment |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107764503A (en) * | 2016-08-16 | 2018-03-06 | 中国电力科学研究院 | A kind of Pressure testing apparatus and method based on tail-rotor formula fairing wind pressure sensor |
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| CN108225721B (en) * | 2018-04-03 | 2023-07-07 | 广州大学 | A Method for Measuring Reference Wind Speed in Wind Tunnel Experiment |
| CN108871725A (en) * | 2018-06-11 | 2018-11-23 | 广州大学 | A kind of modification method referring to static pressure for wind tunnel experiment |
| CN108871725B (en) * | 2018-06-11 | 2023-07-07 | 广州大学 | Correction method for wind tunnel experiment reference static pressure |
| CN109061219A (en) * | 2018-07-18 | 2018-12-21 | 湖南大学 | Actual measurement device and method with reference to static pressure, wind speed and direction is provided under typhoon environment |
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