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-   -   numerical simulation tsunami (http://www.cfd-online.com/Forums/flow-3d/107460-numerical-simulation-tsunami.html)

hossein2357 September 27, 2012 11:53

numerical simulation tsunami
 
hi
i want to scrutiny effect tsunami on break water,but i dont know which software (ex:flow-3d,ansys-cfx,ansys-flid ...) can best chosed.
please help

all the best

dmilano September 28, 2012 12:53

For what it's worth, I just saw a presentation on tsunami modelling in FLOW-3D by Osamu Kiyomiya from Waseda University,Tokyo.

hossein2357 October 19, 2012 14:42

hi,
How i can produce tsunami wave in flow3d with piston(wave maker)
thanks a lot

dmilano October 19, 2012 14:54

You'll want to use the GMO model to simulate the motion of the sea floor.

hossein2357 November 19, 2012 07:22

hi,
How i can prodouce tsunami wave in flow3d
i dont know,how we must use "shallow water" for tsunami wave

dmilano November 19, 2012 11:19

The GMO approach should still work with the shallow water model. Just be sure to keep all of the geometry in the lower cell and it should be fine. Alternatively, you could try using the wave boundary condition to create the waves.

hossein2357 November 19, 2012 11:42

When i use "shallow water",the flow3d want to be number cell mesh in z direction 2cell. my model in z direction have 300cell!
that Seems strange to me
what should i do?

dmilano November 19, 2012 12:03

The shallow water model uses depth-averaged equations and therefore only needs two cells in z. It expects all geometry and fluid to be in the lower cell; the upper cell is used to apply the boundary conditions at the free surface. If you define your problem in this way it should work.

max0014 November 19, 2012 16:00

Quote:

Originally Posted by dmilano (Post 393010)
The shallow water model uses depth-averaged equations and therefore only needs two cells in z. It expects all geometry and fluid to be in the lower cell; the upper cell is used to apply the boundary conditions at the free surface. If you define your problem in this way it should work.

Yes just like dmilano suggested you can make all your geometry (300 cells in z-direction) into bottom cell; use upper cell to apply boundary condition at the free surface.

hossein2357 November 19, 2012 17:53

How i can place geometry (300 cells in z-direction) into bottom cell?

max0014 November 19, 2012 18:14

Quote:

Originally Posted by hossein2357 (Post 393068)
How i can place geometry (300 cells in z-direction) into bottom cell?

just combine 300 cells into 1.

hossein2357 December 4, 2012 05:54

1 Attachment(s)
hi
when i use shallow water and run program.
The wave player normally can not be seen. ex:in 2D and X-Z plane, I see the color of the lower cell.
can we see shallow water the normal display?


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