Air bubble in water

liu · April 15, 2008, 18:47

I want to simulate an air bubble in water. The air bubble is compressible and the water is not. Is there any solver I can start with? Basically there are two different fluids (compressible and incompressible). For VOF method, both fluids are incompressible.

gwierink · April 16, 2008, 03:27

Hi Xiaofeng,

I think there are some tutorials that deal with that or something similar, check page U-84 of the OpenFOAM manual on Multiphase flow. I intend to try this as well, although I haven't gotten to it yet. Do you have any specific problems or is it just starting?

Regards, Gijs

liu · April 16, 2008, 13:18

We have a 1D model which deals with filling of pipe flows. Air bubbles are always seen in this type of flow. They are sometimes trapped inside the pipe (for example sewage pipes). This caused a lot of problem especially during a flood event. The purpose is to use 3D model to validate our 1D simple model.

I will have a look at the user mannual.

liu · April 16, 2008, 13:24

It seems there is no such solver with solve both incompressible and compressible flows.

Anyone has experience on this?

April 15, 2008, 18:47	I want to simulate an air bubb	#1
liu Senior Member Xiaofeng Liu Join Date: Mar 2009 Location: State College, PA, USA Posts: 118 Rep Power: 17	I want to simulate an air bubble in water. The air bubble is compressible and the water is not. Is there any solver I can start with? Basically there are two different fluids (compressible and incompressible). For VOF method, both fluids are incompressible. __________________ Xiaofeng Liu, Ph.D., P.E., Assistant Professor Department of Civil and Environmental Engineering Penn State University 223B Sackett Building University Park, PA 16802 Web: http://water.engr.psu.edu/liu/

April 16, 2008, 03:27	Hi Xiaofeng, I think there	#2
gwierink Senior Member Gijsbert Wierink Join Date: Mar 2009 Posts: 383 Rep Power: 18	Hi Xiaofeng, I think there are some tutorials that deal with that or something similar, check page U-84 of the OpenFOAM manual on Multiphase flow. I intend to try this as well, although I haven't gotten to it yet. Do you have any specific problems or is it just starting? Regards, Gijs __________________ Regards, Gijs

April 16, 2008, 13:18	We have a 1D model which deals	#3
liu Senior Member Xiaofeng Liu Join Date: Mar 2009 Location: State College, PA, USA Posts: 118 Rep Power: 17	We have a 1D model which deals with filling of pipe flows. Air bubbles are always seen in this type of flow. They are sometimes trapped inside the pipe (for example sewage pipes). This caused a lot of problem especially during a flood event. The purpose is to use 3D model to validate our 1D simple model. I will have a look at the user mannual. __________________ Xiaofeng Liu, Ph.D., P.E., Assistant Professor Department of Civil and Environmental Engineering Penn State University 223B Sackett Building University Park, PA 16802 Web: http://water.engr.psu.edu/liu/

April 16, 2008, 13:24	It seems there is no such solv	#4
liu Senior Member Xiaofeng Liu Join Date: Mar 2009 Location: State College, PA, USA Posts: 118 Rep Power: 17	It seems there is no such solver with solve both incompressible and compressible flows. Anyone has experience on this? __________________ Xiaofeng Liu, Ph.D., P.E., Assistant Professor Department of Civil and Environmental Engineering Penn State University 223B Sackett Building University Park, PA 16802 Web: http://water.engr.psu.edu/liu/

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