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Old   November 22, 2018, 03:11
Default hydrogen injection
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liyong
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when I simulate the hydrogen injection, I found the mass flow rate and velocity of hydrogen are very low in injection duration(-128 ~ -118). the attachment is boundary and initial condition and geometry of injector. anyone can tell me what wrong is?
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File Type: png boundary.PNG (59.1 KB, 55 views)
File Type: png initial.PNG (70.8 KB, 44 views)
File Type: png geometry.PNG (117.8 KB, 49 views)
File Type: png mass flow.PNG (18.9 KB, 33 views)
File Type: png velocity.PNG (19.8 KB, 22 views)
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Old   November 22, 2018, 03:35
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Your injection_volume REGION pressure is at 1 atm. It should be the injection pressure. Can you verify with that?
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Old   November 22, 2018, 03:41
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Quote:
Originally Posted by KapilO8 View Post
Your injection_volume REGION pressure is at 1 atm. It should be the injection pressure. Can you verify with that?
that is initial condition, I think it should be 1atm because the injection has not started at begining. besides, I have tried to set it to be injection pressure, but it dosn't work
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Old   November 26, 2018, 15:53
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Can you confirm that the two regions are OPEN to each other via events?
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Old   November 27, 2018, 02:13
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the problem has been solved, Thank you very much
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Old   January 3, 2019, 07:56
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Quote:
Originally Posted by luckyboy View Post
when I simulate the hydrogen injection, I found the mass flow rate and velocity of hydrogen are very low in injection duration(-128 ~ -118). the attachment is boundary and initial condition and geometry of injector. anyone can tell me what wrong is?
Can you please tell me how did you flagged boundaries to injector and how did u put nozzles on it?
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