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plume entrainment effect

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Old   February 26, 2025, 13:15
Default plume entrainment effect
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Shamoon Jamshed
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Hi,

I am simulating a nozzle flow where the nozzle lies in a confined region ( a type of coffin). The outer wall is offset from the center-line. When the nozzle exhaust flows the outer wall gets a very little influence of plume. However, the region just above the nozzle and (between the wall) s specified as pressure outlet. So i am running gauge values so only inlet pressure is specified while the press outlet is set to 101325 Pa and the operating pressure is set to 0. Solution diverges after aprrox. 500 iterations. I am using Coupled Method with pseudo time step with times step size to 0.05-0.1.

Regards,

SJ
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Old   February 28, 2025, 12:55
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Quote:
Originally Posted by Shamoon Jamshed View Post
Hi,

I am simulating a nozzle flow where the nozzle lies in a confined region ( a type of coffin). The outer wall is offset from the center-line. When the nozzle exhaust flows the outer wall gets a very little influence of plume. However, the region just above the nozzle and (between the wall) s specified as pressure outlet. So i am running gauge values so only inlet pressure is specified while the press outlet is set to 101325 Pa and the operating pressure is set to 0. Solution diverges after aprrox. 500 iterations. I am using Coupled Method with pseudo time step with times step size to 0.05-0.1.

Regards,

SJ
Pls reply to the above query
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Old   March 3, 2025, 11:55
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Please help me in this regard. I need it urgent pls
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