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fluent rocket simulation

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Old   October 18, 2017, 12:54
Default fluent rocket simulation
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hi every body
please i need help
im simulating a rocket with the following geometry. under a mach =1.4 and angle of attack equals 5 degree.
there is a disaster pressure circles on my farfeild that i dont what is the source of them.
i will show you in the following pictures:

density.jpg

residuals.jpg

static pressure.jpg

please i need help Cd and Cp are defferent
my rocket is agard b which is a sample rocket you can find in google
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