fixes #487 (closed)
move staggered gridVolVars to free flow sub folder
adapt indices in tests, if necessary
Some reference solutions had to be updated because there was a bug / logical error:
For inlet (e.g., in tests featuring a channel), a Dirichlet BC for velocity was set, combined with an outflow BC for pressure, which basically set the pressure of the virtual outer volVars to the one of inner volVars:
p_out = p_in
This is per se not bad and acutally the desired behavior.
However, in the
fluxVars, the advective fluxes themselves checked for an outflow BC for each
eqIdx and then always used the inner
volVars if outflow for
== pressureIdx) was set. This means that for
eqIdx == conti0EqIdx, an inflowing fluid would use
p_in (which is good) but also
x_in ect. which is actually wrong because user-specified Dirchlet values should be used for that instead.
The new implementation accounts for this.