Boundary Conditions - Transient Simulation
I would like to make a transient simulation of combustion process in Ansys CFX 13.0 and I have need to set Normal Speed for Air flow as follow (for steady-state simulation):
Insert Boundary>Boundary Details>Mass And Momentum>Option – Normal Speed>Normal Speed>15 m.s^-1
But if I want to make a transient simulation I would like to define Normal Speed for Air flow as function of time. For example:
Vair flow= A*t^3+B*t^2+C*t+D,m/s
where A,B,C,D are constants,
Insert Boundary>Boundary Details>Mass And Momentum>Option – Normal Speed>Normal Speed> Enter Expression>2,5*t^3+6*t^2+2*t+1,8.
So, how can I express this dependence if I want to do this transient simulation?
Thank you in advance
Thank you so much!
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