pressure fluctuation when applying time varying velocity inlet -- CFD Online Discussion Forums

November 10, 2021, 02:29	pressure fluctuation when applying time varying velocity inlet	#1
chen112p Member Junting Chen Join Date: Feb 2016 Location: Ontario Canada Posts: 37 Rep Power: 10	Hello, I am using pimpleFoam to run an external aerodynamics simulation using IDDES - SA. Instead of using steady inlet flow, I recorded a flow with some turbulence then inject this flow to my inlet boundary. Velocity field is all looking good but I notice that pressure field in the domain fluctuates in some unphysical way. Here I am running the simulation using OF2012. I noticed that this topic has been discussed in this thread: Fluctuating Pressure Fields (LES-pisoFoam) I don't think i found a solution from this thread tho. Please drop some hints if someone knows a good way to fix it. JT Last edited by chen112p; November 10, 2021 at 09:40.

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