HI Ali,

Have you tried setting “awgn(sigma)” in the boundary condition string. To make a boundary condition time dependent you then need to add the string “USERDEFINED=“TimeDependent”. 

Cheres,
Spencer

On 29 Jul 2019, at 20:21, Akhavan Safaei, Ali <akhavans@msu.edu> wrote:

Hello everyone,

I need to generate a velocity boundary condition for IncNavierStokesSolver as a Gaussian random process (in time) in the session file.
I know we can use "awgn(sigma)", for example, to generate Gaussain random I.C.; but, I haven't been able to fine a way to extend it to random process B.C. .

I would greatly appreciate it if anyone can help me with that.

Best,
Ali Akhavan-Safaei

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Ali Akhavan Safaei, PhD student,

Graduate Research Assistant
Michigan State University
Department of Mechanical Engineering

428 S. Shaw Lane 
Engineering Bldg., Rm. #4110
East Lansing, MI 48824
            akhavans@egr.msu.edu
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Spencer Sherwin FREng, FRAeS
Head, Aerodynamics,
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