multiphaseEulerFoam now supports the "frozenFlow" setting in
system/fvSolution/PIMPLE. With this switch on, the pressure-velocity
system is not solved. Energy and species transport are simulated using
fixed velocity and pressure fields. Non-transport effects on the phase
fraction, such as mass transfer or fvOption sources, are also included.
Note that this setting does not enforce conservation. In general, any
processes that alter the phase fraction have to be set up carefully in
order to avoid generating an inconsistent set of phase fractions.
This switch has been enabled in two zero-dimensional test cases which
are designed to operate at a constant pressure. The "frozenFlow" switch
now enforces this constant pressure directly. Previously the pressure
equation was being solved, but the system was not well posed, and the
cases were failing to run as a result.
ed0686ea0c