# Burgerbs equation non constant Boundary Conditions Initial Conditions

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 October 2, 2008, 11:02 HI I want to simulate the #1 Member   O R Join Date: Mar 2009 Posts: 50 Rep Power: 17 HI I want to simulate the 2D Burger's equation (modified a little) on a domain ]0,1[ x]0,1[ , all seems to be simple. But I have the problem of telling the solver I want non-uniform boundary conditions (BC) and specify Initial conditions (IC) on the domain. For example: BC: U(0,y)=U(1,y)= C*y ; V(x,0)=V(x,1)=C*x (so The U vel will vary linearly along the y axis while the V vel will vary linearly along the x axis) IC: For the initial condition t=0. I want to tell the solver that the value of U and V (x-vel and y-vel) are function of the position U(x,y) =sin(pi*x)*cos(pi*y) and V(x,y)=f(x,y) for t=0. Can you tell me how to do it in openfoam? thanxs

 October 2, 2008, 14:48 BC: timeVaryingMappedFixedValu #2 Senior Member   Mattijs Janssens Join Date: Mar 2009 Posts: 1,419 Rep Power: 26 BC: timeVaryingMappedFixedValue. Reads table of values. Interpolates in space (and optionally time). See the pitzDailyExptInlet tutorial IC: Search on the Wiki for Bernhard's funkySetFields.