Hi,
I am trying to solve a simple fluid flow problem. It involves marangoni effect. But, I want to make it simple and apply shear stress as the boundary condition, instead of solving coupled thermal and fluid flow problem.
Here is the problem setup in 2D:
A semi circular surface. Straight edge is fixed. Circular curved surface has shear stress applied on it (Marangoni effect). Center of the curved surface has 0 shear stress, it goes to a maximum near the edge where it meets the straight surface. So I am modeling half of the semicircle with a symmetry boundary condition. Please see the figure attached.
With these stresses applied, I should observe a double circular flow as shown in figure. But instead I am getting something else. I have used "boundary stress" and "general stress". Did I do anything wrong? Is there a way to apply u.n=0 on the curved boundary surface and also apply the stress?
Any help would be greatly appreciated. Thanks in advance.
I am trying to solve a simple fluid flow problem. It involves marangoni effect. But, I want to make it simple and apply shear stress as the boundary condition, instead of solving coupled thermal and fluid flow problem.
Here is the problem setup in 2D:
A semi circular surface. Straight edge is fixed. Circular curved surface has shear stress applied on it (Marangoni effect). Center of the curved surface has 0 shear stress, it goes to a maximum near the edge where it meets the straight surface. So I am modeling half of the semicircle with a symmetry boundary condition. Please see the figure attached.
With these stresses applied, I should observe a double circular flow as shown in figure. But instead I am getting something else. I have used "boundary stress" and "general stress". Did I do anything wrong? Is there a way to apply u.n=0 on the curved boundary surface and also apply the stress?
Any help would be greatly appreciated. Thanks in advance.