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Compressible Water-Sloshing

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Old   February 21, 2013, 16:33
Default Compressible Water-Sloshing
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Rajesh
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Hello Everyone,
I am investigating the effects of compressibility on sloshing. The fluids in action or air and water. While having both fluids as compressible, i.e. air as ideal gas and water with density as a function of pressure, I am able to get results (attached) as expected. But when I make the water alone to be compressible I get very high pressure values (attached results). The behaviour of water looks the same in both cases when I see the water volume fraction contours. The Reference Pressure I am using for both the cases is 1 atm and the relative pressure is 0 pa. Since I am using a six sided no slip wall geometry, I have specified a pressure level of 1Pa on the top wall. Could some one please help me out with what actually the error must be. I have also attached my CCl file.
Thanks,
Rajesh.
Attached Images
File Type: jpg 60%AirWatercompressible.jpg (52.7 KB, 25 views)
File Type: jpg 60%WaterCompressible.jpg (37.5 KB, 22 views)
Attached Files
File Type: txt tank.ccl.txt (2.0 KB, 19 views)
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ansys, cfx, compressibility, compressible flow, sloshing


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