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ISSN : 1026-3098
e-ISSN : 2345-3605
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Publication Information : Volume 22 - Number 3 - Successive Number 3
Type : Article
Topics of Paper : Transaction on Mechanical Engineering
English Title : Rooster Tail Depression by Originating a Modified Transom Stern Form Using a Reynolds Averaged Navier Stokes Solver
English Abstract : The present article relates to a new transom stern form for high speed planing hulls. To depress the intensive transom wave known as “rooster tail”, an innovative form of transom stern is originated. The new form of the transom stern is introduced by cutting the bottom of the hull near the transom stern. To verify the capability of the modified transom stern, a three dimensional RANS solver is used. It is demonstrated that by using the new transom stern shape, the intensive wave behind the transom will be substantially reduced in the range of the parameters under investigation.  In the meantime, it is expected that the radar signature will also be decreased. To study the effect of modified transom at various Froude numbers and different trim angles, a set of numerical experiments are conducted. Three Froude numbers and four trim angles are considered and it is observed that the cutted transom stern has a significant effect on the reduction of height and length (height reduction up to 61% and length reduction up to 63%) of the rooster tail. Additionally, the accuracy of the numerical solutions is validated by comparing them against the results of empirical formula existing in the literature.
English Keywords : Hydrodynamics;Transom Cut; Rooster Tail Reduction; Numerical Simulation; Parametric Study
Refrences :
Number Of Pages :
From 765 to 777


Authors :
The AuthorAuthor SequenceOrganizationOrganization ( english )AffiliationEmailEducation
Dr. Parviz Ghadimi
(Author)
1Dept. of Marine technology, Amirkabir University of Technology, Teheran, Iran Associate Professor pghadimi@aut.ac.ir 
Abbas Dashtimanesh 2Dept. of Marine technology, Amirkabir University of Technology, Teheran, Iran    
Dr. Rahim Zamanian 3Dept. of Marine technology, Amirkabir University of Technology, Teheran, Iran  Assistant Professor   
Mohammad A. Feizi Chekab 4Dept. of Marine technology, Amirkabir University of Technology, Teheran, Iran    
Seyed Hamid R. Mirhosseini 5Dept. of Marine technology, Amirkabir University of Technology, Teheran, Iran    
Published Issues
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Transactions on Civil Engineering
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2016
2015
Transactions on Civil Engineering
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2014
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
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2013
Transactions on Civil Engineering
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Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
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