SU957110A1 - Method of determination of speed at the surface of model in gas flow - Google Patents
Method of determination of speed at the surface of model in gas flow Download PDFInfo
- Publication number
- SU957110A1 SU957110A1 SU802920228A SU2920228A SU957110A1 SU 957110 A1 SU957110 A1 SU 957110A1 SU 802920228 A SU802920228 A SU 802920228A SU 2920228 A SU2920228 A SU 2920228A SU 957110 A1 SU957110 A1 SU 957110A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- model
- acoustic wave
- determination
- speed
- gas flow
- Prior art date
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Description
1one
Изобретение относитс к измерительной технике и может быть использовано в экспериментальной аэродинамике дл определени локальной скорости, у поверхности модели, обтек%емой потоком.The invention relates to a measurement technique and can be used in experimental aerodynamics to determine the local velocity at the surface of a model wrap around a stream.
Известен термоанемометрический спосоЬ измерени скорости потока, основанный на измерении сопротивлени терморезистора, перегретого относительно набегающего потока .The thermo-anemometric method for measuring the flow rate is known, based on the measurement of the resistance of a thermistor that is superheated relative to the incoming flow.
Недостатком термоанемометрического способа вл етс его относительна сложность.The disadvantage of the hot-wire method is its relative complexity.
Наиболее близким к изобретению по технической сущности вл етс способ измерени скорости потока газа путем облучени исследуемой плоской акустической волной. На пути 20 акустической волны располагают акустические приемники, по выходному сигналу с которых суд т о скорости потока 2 .The closest to the invention in its technical nature is a method for measuring the gas flow rate by irradiating with a plane acoustic wave under study. Acoustic receivers are placed on the path 20 of the acoustic wave, from the output signal from which the flow velocity 2 is judged.
Недостатком известного способа вл етс интегральныйГпо сечению потока характер измерений скорости, что снижает точность локальных измерений, например, у поверхности модели, расположенно) в потоке.The disadvantage of the known method is the integrated flow cross section character of velocity measurements, which reduces the accuracy of local measurements, for example, at the model surface, located in the stream.
Целью изобретени вл етс повышение точности измерений скорости у поверхности модели, обтекаемой газовым потоком.The aim of the invention is to improve the accuracy of velocity measurements at the surface of a model streamlined by a gas stream.
Поставленна цель достигаетс тем, что в способе определени скорости у поверхности модели, обтекаемой газовым потоком, путем облучени исследуемой области плоской акустической волной,в модели выполн ют отверстие, облучают его плоской акустической волной, измер ют амплитуду акустической волны на поверхности модели и по амплитуде суд т о скорости потока у поверхности модели. The goal is achieved by the method of determining the velocity at the surface of a model streamlined by a gas stream, by irradiating the area under investigation with a flat acoustic wave, a hole is made in the model, irradiated with a flat acoustic wave, the amplitude of the acoustic wave is measured on the surface of the model and the court amplitude t about the flow rate at the surface of the model.
Изобретение основываетс на том факте, что изменение импендансаThe invention is based on the fact that the change in impedance
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802920228A SU957110A1 (en) | 1980-04-30 | 1980-04-30 | Method of determination of speed at the surface of model in gas flow |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802920228A SU957110A1 (en) | 1980-04-30 | 1980-04-30 | Method of determination of speed at the surface of model in gas flow |
Publications (1)
Publication Number | Publication Date |
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SU957110A1 true SU957110A1 (en) | 1982-09-07 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU802920228A SU957110A1 (en) | 1980-04-30 | 1980-04-30 | Method of determination of speed at the surface of model in gas flow |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU957110A1 (en) |
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1980
- 1980-04-30 SU SU802920228A patent/SU957110A1/en active
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