Co-Flow Jet Nozzle Simulation

ogutierrez · January 7, 2021, 23:06

Hi Everyone,

I am attempting to run a co-flow jet nozzle simulation exhausting into ambient conditions (see the attached files) with RANS and SST, however it doesn't seem to produce a flow in the outer (secondary nozzle) only in the inner (primary nozzle), I've already looked at my BC'S and attempted to refine the mesh as much as my computer allows it. Any idea where I could be going wrong?

I couldn't attach my mesh file due to size.

Many thanks

bigfootedrockmidget · January 12, 2021, 12:12

Can you make a figure where you rescale the velocity to e.g. [0,1] (or some small maximum value for velocity) to check that there is really no flow at the secondary inlet?
It looks like something is happening in the throat but the value is much smaller than the maximum value used for the color plot.

ogutierrez · January 13, 2021, 17:23

Hi there,
Thank you for replying. Yes attached is a picture. I appreciate the help.

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January 12, 2021, 12:12		#2
bigfootedrockmidget Senior Member bigfoot Join Date: Dec 2011 Location: Netherlands Posts: 676 Rep Power: 21	Can you make a figure where you rescale the velocity to e.g. [0,1] (or some small maximum value for velocity) to check that there is really no flow at the secondary inlet? It looks like something is happening in the throat but the value is much smaller than the maximum value used for the color plot.