[Gmsh] Residual not dropping for my mesh. Want to implement boundary layer on surface.

Manideep Reddy · September 2, 2017, 02:15

Dear all,

I want to simulate turbulent incompressible flow over an Airship profile using OpenFOAM SimpleFOAM solver. So, I made mesh using GMSH . But the problem is solution not converging. No matter how much time I wait, they are not going below 0.01. So I assumed that the problem is with the mesh. I did not create very fine mesh near wall to capture the boundary layer effects. Is this might the problem..?

My doubt is, How can I create very fine mesh on the wall surface to create boundary layer.?
I am attaching the links to my files. Somebody please help me as I am struck with it from the past 3 weeks.

https://drive.google.com/file/d/0B5E...ew?usp=sharing
https://drive.google.com/file/d/0B5E...ew?usp=sharing

Thanks in advance.

tareqkh · September 7, 2017, 12:56

Quote:

Originally Posted by Manideep Reddy

Dear all,

I want to simulate turbulent incompressible flow over an Airship profile using OpenFOAM SimpleFOAM solver. So, I made mesh using GMSH . But the problem is solution not converging. No matter how much time I wait, they are not going below 0.01. So I assumed that the problem is with the mesh. I did not create very fine mesh near wall to capture the boundary layer effects. Is this might the problem..?

My doubt is, How can I create very fine mesh on the wall surface to create boundary layer.?
I am attaching the links to my files. Somebody please help me as I am struck with it from the past 3 weeks.

https://drive.google.com/file/d/0B5E...ew?usp=sharing
https://drive.google.com/file/d/0B5E...ew?usp=sharing

Thanks in advance.

Can you please post a picture in what are you trying to simulate?

Thanks,

September 2, 2017, 02:15	Residual not dropping for my mesh. Want to implement boundary layer on surface.	#1
Manideep Reddy New Member Manideep Reddy Join Date: Aug 2017 Posts: 7 Rep Power: 8	Dear all, I want to simulate turbulent incompressible flow over an Airship profile using OpenFOAM SimpleFOAM solver. So, I made mesh using GMSH . But the problem is solution not converging. No matter how much time I wait, they are not going below 0.01. So I assumed that the problem is with the mesh. I did not create very fine mesh near wall to capture the boundary layer effects. Is this might the problem..? My doubt is, How can I create very fine mesh on the wall surface to create boundary layer.? I am attaching the links to my files. Somebody please help me as I am struck with it from the past 3 weeks. https://drive.google.com/file/d/0B5E...ew?usp=sharing https://drive.google.com/file/d/0B5E...ew?usp=sharing Thanks in advance.

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