Doubts about refCast
Hi guys, Iam new in Open Foam and I have a doubt about refCast.
The problem is.
I created a boundary condition (called eulerRho) that calculates the amplitude variation (L1) in the density file of the 0 folder for an outlet.
In the pressure file of the 0 folder for an outlet, I need to take the value of L1 calculated in the eulerRho using another Boundary (called eulerPressure).
I was told that I must use the refcast to take the valuer from eulerRho and to pass to eulerPressure.
But how I do this?
I really dont know how to use the refCast, and already looked in the c++ source guide but i didnt understand.
Can someone help me? =)
I can only guess they wanted you to implement a custom access function in your eulerRho boundary condition, and gain access to it by refCasting the generic const fvPatchField reference you'd be able to acquire through the objectRegistry. That's a little ugly.
The code for this function is in src/OpenFOAM/db/typeInfo/typeInfo.H, by the way.
Do you only need const access to L1 in eulerPressure? If so, there are easier ways. For starters, you could use the IOReferencer that I released a while back, available here: http://openfoamwiki.net/index.php/Contrib_IOReferencer
Or, you could have eulerRho create an IOdictionary (NO_READ, NEVER_WRITE), and put L1 into it. Then use the object registry to lookup that IOdictionary and read the value from it.
Thanks David for the tips.
I was looking through the Doxygen and found this in the
I was able to store my scalarField variable as an IOField.
Thanks David, i think now i can access the variable from the other boundary condition(eulerpressure).
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