Study on the parameter optimization of air-drying system in large continuous transonic wind tunnel

PEI Haitao; CHEN Jiming; CHEN Zhenhua; CHEN Qin; WANG Pan

doi:10.11729/syltlx20210091

Volume 36 Issue 1

Mar. 2022

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Article Navigation > Journal of Experiments in Fluid Mechanics > 2022 > 36(1): 89-95

PEI H T，CHEN J M，CHEN Z H，et al. Study on the parameter optimization of air-drying system in large continuous transonic wind tunnel[J]. Journal of Experiments in Fluid Mechanics, 2022，36（1）：89-95. doi: 10.11729/syltlx20210091

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Study on the parameter optimization of air-drying system in large continuous transonic wind tunnel

doi: 10.11729/syltlx20210091

PEI Haitao^1
,,
CHEN Jiming^{1, 2
,
,},
CHEN Zhenhua^{1, 2},
CHEN Qin^{1, 2},
WANG Pan¹

1.
Facility Design and Instrumentation Institute, China Aerodynamics Research and Development Center, Mianyang　621000, China
2.
State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang　621000, China

Received Date: 2021-08-11
Accepted Date: 2021-12-20
Rev Recd Date: 2021-12-16
Publish Date: 2022-03-17

Abstract

Abstract

In the transonic wind tunnel, the flow of wet air can turn into non-isentropic flow due to water vapor condensation in the test section, followed by the formation of condensation wave, seriously destroying the uniformity of the flow field and the accuracy of the test data. Therefore, the air should be dried ahead of test to ensure its moisture content less than 1.5 g/kg. The circulation drying system is an economical and efficient air-drying way in the large continuous transonic wind tunnel. In this paper, a rotary and cooling dehumidification drying system is designed for the wind tunnel, and an air-drying calculation model based on the assumption of uniform mixing is proposed and validated by experiment. According to the proposed model, the optimized parameters of the air-drying system are obtained. The results show that the model can effectively estimate the change of the average moisture content in the tunnel, and the deviation from the test is within 8.3% when the number of cycles is more than 2; the maximum cooling load of the front and rear heat exchanger can be reduced by about 41.9% and 27.8% respectively in this system by making full use of the dehumidification capacity of the first four cycles and the selected rotary dehumidifier.
- continuous wind tunnel,
- drying system,
- rotary dehumidifier,
- calculation model,
- performance analysis

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References(12)

References

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