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Experimental and numerical investigation of drag force over tubular frustum

Niknafs Abrebekooh, Y ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.scient.2011.08.027
  3. Abstract:
  4. There are different ways in order to achieve higher velocity in underwater vehicles. One of these methods is using a body with special form. This paper presents a towing tank based experimental study on drag forces for different Reynolds Numbers of a special underwater model. This paper investigates drag force and drag coefficient in a different flow direction over the model. Obtained experimental results in towing tank are explained. Computational Fluid Dynamic (CFD) simulation also is performed using commercial CFD software package FLUENT 6.3.26. There is a significant decrease in drag coefficient of model moving with small diameter at upstream
  5. Keywords:
  6. Axisymmetric ; CFD ; Drag coefficient ; Drag reduction ; Towing tank measurements ; Underwater body ; Axisymmetric ; CFD softwares ; Drag forces ; Experimental studies ; Flow direction ; Numerical investigations ; Special forms ; Underwater bodies ; Underwater vehicles ; Automobile bodies ; Drag ; Drag coefficient ; Drag reduction ; Reynolds number ; Ship model tanks ; Computational fluid dynamics ; computational fluid dynamics ; drag coefficient ; experimental study ; Reynolds number ; software ; symmetry ; towing ; underwater vehicle
  7. Source: Scientia Iranica ; Volume 18, Issue 5 , 2011 , Pages 1133-1137 ; 10263098 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S1026309811001775