Fluid-solid coupling n.P=n.sigma?

October 29, 2007, 14:50

I am treating two-dimensional fluid-solid coupling. Dynamically to couple the fluid and the solid, the fluid pressure is usually used to apply the traction force acting on the solid through the normal vector.

It is not trivial to define the normal vector at the interface. Is there any easy way?

October 29, 2007, 16:26

in 2D you can calculate normal as (-sin(th),cos(th)) where the angle theta is usually calculated using the atan2 function.Check any book or article on panel methods.

October 29, 2007, 14:50	Fluid-solid coupling n.P=n.sigma?	#1
jinwon park Guest Posts: n/a	I am treating two-dimensional fluid-solid coupling. Dynamically to couple the fluid and the solid, the fluid pressure is usually used to apply the traction force acting on the solid through the normal vector. It is not trivial to define the normal vector at the interface. Is there any easy way?

October 29, 2007, 16:26	Re: Fluid-solid coupling n.P=n.sigma?	#2
Harish Guest Posts: n/a	in 2D you can calculate normal as (-sin(th),cos(th)) where the angle theta is usually calculated using the atan2 function.Check any book or article on panel methods.

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