Numerical analysis and optimization of the wind field of wind channel simulation tests in ocean atmosphere

DOI:	10.11809/bqzbgcxb2023.03.038
Keywords:	ocean atmosphere; wind field simulation; numerical analysis; structural optimization; uniformity
Abstract:	In order to solve the problem that the deposition rate of salt fog atmosphere fluctuates greatly on the same horizontal test surface of the test chamber in a simulated ocean atmosphere test, this paper proposes a method of using a wind field numerical analysis to study and improve the uniform deposition of salt fog atmosphere on the same horizontal surface. Taking simulated ocean atmosphere test equipment like a U shaped air duct and test chambers as the research objects, this paper establishes an original simulation model by using ICEM CFD and Fluent simulation software to simulate the wind field distribution characteristics.According to the distribution characteristics of the wind field in the original test chamber, the air supply mode of the circulating air outlet in the test chamber is improved and optimized, and a new air supply mode is proposed. The optimized simulation model is established by using ICEM CFD and Fluent simulation software to simulate the wind field distribution characteristics. Through the comparison of the numerical curves of the original and the optimized wind fields, it is shown that, when the pressure difference of the fan is 100 MPa, the wind speed range of the original structure is (0.16~9.18)m/s, and the central wind speed is 0.608 8 m/s; after optimization, however, the speed range is (0.34~2.14)m/s, and the central wind speed is 1.545 5 m/s. The optimized air supply mode effectively improves the uniformity of wind field distribution in the test chamber, and significantly improves the central wind speed in the chamber, which has a certain reference value for engineering design.
Published:	2023-03-28
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