[w.tian]

Dear all,

I have a fundamental question regarding the handling of the momentum source that is applied to the inlet. See the channel flow in the attached schematic (just one row of the grid, and staggered grid is used). The upper schematic is the problem statement, in which the user specifies a momentum source in the first scalar cell. Since we use staggered grid (U cell marked be green dash line), when solving the momentum (U) equation, then it seems like we have to move the source location specified by the user a-half-cell forward, as shown in the lower schematic. Physically, this solution is targeting a different flow than the one specified by the user. Does anyone have any experience on this problem?

You can check my schematic of this problem in researchgate: https://www.researchgate.net/post/Ho...acent_to_Inlet

Thanks.