numerical simulation tsunami

hossein2357 · September 27, 2012, 12:53

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, 13:53

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, 15:42

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

dmilano · October 19, 2012, 15:54

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

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

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

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?

September 27, 2012, 12:53	numerical simulation tsunami	#1
hossein2357 New Member hossein Join Date: Sep 2012 Posts: 10 Rep Power: 14	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

September 28, 2012, 13:53		#2
dmilano Member Join Date: Mar 2012 Posts: 72 Rep Power: 14	For what it's worth, I just saw a presentation on tsunami modelling in FLOW-3D by Osamu Kiyomiya from Waseda University,Tokyo. hossein2357 likes this.

October 19, 2012, 15:54		#4
dmilano Member Join Date: Mar 2012 Posts: 72 Rep Power: 14	You'll want to use the GMO model to simulate the motion of the sea floor. hossein2357 likes this.

November 19, 2012, 11:19		#6
dmilano Member Join Date: Mar 2012 Posts: 72 Rep Power: 14	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 likes this.

November 19, 2012, 12:03		#8
dmilano Member Join Date: Mar 2012 Posts: 72 Rep Power: 14	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. hossein2357 likes this.

October 19, 2012, 15:42		#3
hossein2357 New Member hossein Join Date: Sep 2012 Posts: 10 Rep Power: 14	hi, How i can produce tsunami wave in flow3d with piston(wave maker) thanks a lot

November 19, 2012, 07:22		#5
hossein2357 New Member hossein Join Date: Sep 2012 Posts: 10 Rep Power: 14	hi, How i can prodouce tsunami wave in flow3d i dont know,how we must use "shallow water" for tsunami wave

November 19, 2012, 11:42		#7
hossein2357 New Member hossein Join Date: Sep 2012 Posts: 10 Rep Power: 14	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?

November 19, 2012, 17:53		#10
hossein2357 New Member hossein Join Date: Sep 2012 Posts: 10 Rep Power: 14	How i can place geometry (300 cells in z-direction) into bottom cell?

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