Volume 21, Issue 4 (April 2021)
Modares Mechanical Engineering 2021, 21(4): 209-224 |
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Mohammmad Beigi S, Shateri A, Dehghan Manshadi M. Experimental investigation of the effect of displacement of stern planes on reducing non-uniformity and fluctuations of a submarine's wake flow. Modares Mechanical Engineering 2021; 21 (4) :209-224
URL: http://mme.modares.ac.ir/article-15-41274-en.html
URL: http://mme.modares.ac.ir/article-15-41274-en.html
1- Ph.D. student of Mechanical Engineering of Shahrekord University
2- Associate Professor of Mechanical Engineering of Shahrekord University ,shateri@eng.sku.ac.ir
3- Associate professor of aerospace engineering of Malek Ashtar University
2- Associate Professor of Mechanical Engineering of Shahrekord University ,
3- Associate professor of aerospace engineering of Malek Ashtar University
Abstract: (1750 Views)
In the present study, the wake flow field of a submarine model was investigated experimentally in a wind tunnel. The experiments were conducted to determine the effect of the location of control surfaces on the wake inflow to the impeller of the submarine. In order to investigate the effect of the location of control surfaces as the most important innovation of the present study, the aforementioned surfaces were installed in three longitudinal positions X/L=0.89, 0.92, 0.95 on the heel of the submarine model, and the wake flow was measured at position X/L=1.7 and the Reynolds number 6*10^5 by a five-hole probe and a hotwire anemometer. Finally, the longitudinal position X/L=0.95 was selected as the optimal location for the stern planes to improve the wake inflow to the impeller in terms of reducing its total area and the least amount of turbulence and non-uniformity. The results obtained during this study showed that arriving of the holder basechr('39')s wake to the stern area increases the area and average velocity and subsequently reducing the non-uniformity of the wake flow.
Article Type: Original Research |
Subject:
Sonic Flow
Received: 2020/03/8 | Accepted: 2020/12/2 | Published: 2021/03/30
Received: 2020/03/8 | Accepted: 2020/12/2 | Published: 2021/03/30
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