Numerical Study on the Influence of Plasma Actuation on the Cavitation Characteristics of Hydrofoil
Publish place: Journal of Applied Fluid Mechanics، Vol: 17، Issue: 9
Publish Year: 1403
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JAFM-17-9_015
تاریخ نمایه سازی: 19 تیر 1403
Abstract:
In order to investigate the influence of plasma actuation on cavitation in the flow field around a hydrofoil, the RNG k-ε turbulence model with density correction, the Schnerr–Sauer cavitation model, and the plasma phenomenological model were used to analyze the influence of forward and reverse plasma actuation on the cavitation characteristics of the NACA۶۶(MOD) hydrofoil at an angle of attack of ۸. The cavitation number of the incoming flow was ۰.۹۹. The results showed that under the positive excitation condition, the cavitation volume on the suction side of the hydrofoil was reduced by about ۳۰%, and the time-averaged lift–drag ratio was reduced by about ۵%, which had little influence on the re-entrant jet, vortex and shear flow. Therefore, the cavitation suppression effect on the hydrofoil flow field was weak. Under the condition of reverse actuation, the volume of cavitation on the suction side of the hydrofoil was reduced by about ۸۷%, and the time-averaged lift–drag ratio was increased by about ۲۱%, which effectively worsened the development conditions of cavitation. By greatly reducing the intensity of the re-entrant jet and eliminating the vortex and shear flow in the flow field, cavitation in the hydrofoil flow field was obviously suppressed. This shows that reasonable plasma actuation is an effective means to control hydrofoil cavitation.
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Authors
R. Guo
School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou,۷۳۰۰۵۰, China
L. Wang
School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou,۷۳۰۰۵۰, China
R. Li
School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou,۷۳۰۰۵۰, China
X. Zhang
School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou,۷۳۰۰۵۰, China
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