DFBI question

January 20, 2009, 13:10

Goodevening

My question is: on web tutorial for DFBI ship motion, the simulation was set as LAMINAR...but for me it isn't correct!! If i want the real motion (sink and trim) of the boat, I need to calculate the realhydrodynamics forces , so the simulation necessary must be set to TURBULENT!

And with turbulent model, is more difficult to make convergence of case!

It's wrong??

January 21, 2009, 16:26

yep, you can not do that with turbolence, a pernos name axmantinetzan has the .sim file..... if you change teh laminar to turbo you can not convergence.... this is a problem of the solver

January 21, 2009, 17:02

I have run turbulent dfbi without a problem (although not on this case)

January 21, 2009, 17:21

Really??

What type of setting you impose?? k-epsilon?? Have you tested a ship hull?

Is match with experimental data??

January 20, 2009, 13:10	DFBI question	#1
Atlas Guest Posts: n/a	Goodevening My question is: on web tutorial for DFBI ship motion, the simulation was set as LAMINAR...but for me it isn't correct!! If i want the real motion (sink and trim) of the boat, I need to calculate the realhydrodynamics forces , so the simulation necessary must be set to TURBULENT! And with turbulent model, is more difficult to make convergence of case! It's wrong??

January 21, 2009, 16:26	Re: DFBI question	#2
hasim Guest Posts: n/a	yep, you can not do that with turbolence, a pernos name axmantinetzan has the .sim file..... if you change teh laminar to turbo you can not convergence.... this is a problem of the solver

January 21, 2009, 17:02	Re: DFBI question	#3
James Guest Posts: n/a	I have run turbulent dfbi without a problem (although not on this case)

January 21, 2009, 17:21	Re: DFBI question	#4
Simone Guest Posts: n/a	Really?? What type of setting you impose?? k-epsilon?? Have you tested a ship hull? Is match with experimental data??

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