Free Surface Flow for Ship

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 October 18, 2003, 07:10 Free Surface Flow for Ship #1 sam Guest   Posts: n/a Hello users, i wanted to simulate the wave pattern of a wigely hull using Fluent, pls help me how to do that and send some tips / tutorial or the procedure how i can do that using Fluent. Thank's in advance.

 October 21, 2003, 03:28 Re: Free Surface Flow for Ship #2 ROOZBEH Guest   Posts: n/a Hi; You must use a multiphase model includes a surface tracking algorithm. Only VOF option of Fluent provides this model. For wave propagation capturing, 3D simulation is better. I extremly recommend you that try to use a structure grid. With an unstructured grid I do not have some good results. Version 6 of Fluent is more better than old versions. I recommend you for first experience with VOF, that you model dam break. Some results about, are provided in litrature. regards

 October 21, 2003, 03:39 Re: Free Surface Flow for Ship #3 mateus Guest   Posts: n/a Hi! As Roozbeh said...If possible use the newest version of fluent (I've had troubles with previous versions).Go trough tutorial problem and then work your way up...you can find a "dam break problem" in CFD book of Peric...and probabilly an a web page of tu-hamburg (lab for ship technology - or something like that) A structured grid is a must here! Also a 3d problem (I really dont know how could you simplify this to 2D????) good luck MATEUS

 October 21, 2003, 03:43 Re: Free Surface Flow for Ship #4 mateus Guest   Posts: n/a Hi! Roozbeh i've lost your mail and also forgoten to answer your question...The value for "n" in turbulent viscosity modification was 10 in my case...(it is considered it should be between 6 and 20...). So your value 10^9 (or something) is way of... MATEUS

 October 21, 2003, 03:56 Re: Free Surface Flow for Ship #5 ROOZBEH Guest   Posts: n/a Hi Mateus; I found you here!!! Right now, I send a single message here. Please read this message. Thanks ROOZBEH

 October 21, 2003, 13:00 Re: Free Surface Flow for Ship #6 Jon Guest   Posts: n/a Sam, check out the dam brake simulation on this page: http://www-waterloo.ansys.com/cfx/pr...maxwell496.mpg More at: http://www-waterloo.ansys.com/cfx/pr...-5/gallery.htm

 October 24, 2003, 05:29 Re: Free Surface Flow for Ship #7 mateus Guest   Posts: n/a Hi! I think you can find some usefull information in: Azuceta R: Computation of turbulent free-surface flows around ships and floating bodies, PhD thesis, Technical University of Hamburg, Hamburg or: Azuceta R., Muzaferija S. Peric M.: numerical simulation of flow around blunt bow model. Proc. Workshop on Numerical Simulation of Two Phase Flows, Ship Research Institute, Tokio 2001 Hope it helps, Best regards MATEUS