[echamilo]

Hi everyone, and I hope that you are fine.

Firstly, I am relative beginner in CFD topics, specially in OpenFOAM, and I would like make known a problem that I have with modelling a channel and lateral weir using InterFOAM.

he problem that I have is a increment of shape water in the side of principal channel (see figures attached in the post), this phenomena is produced from the first moments of run model . Some characteristics of model are:

• Water level height constant, equal to 90cm.

• Flow rate constant, keeping same water level.

• Parallel simulation with three processors.

Additionally, some solutions and/or possibles causes that I considered in this problems are:

• Change interpolation scheme of “interfaceCompression vanLeer 1” to “upwind”, where this phenomena still occurs. (solution)

• I considered that solution is the interpolation scheme of phi, alpha (or all interpolations schemes). (cause)

• In consideration that variableFlowRAteInletVelocity estimated an average velocity on the bounday condition as scalar avgU = -flowRate/gSum(patch().magSf()*alphap); then I’ve considered reduce flow rate for prevent possibles increments in the water level. (solution)

I really appreciate your opinions and suggestions, thanks .