PVJ is a modified cyclic OpenFOAM boundary condition which allows to model the presence of permeable surfaces without explicitly modelling the details of their geometry. It can be considered as an extension of the well-known pressure-jump approach, able to consider also velocity deflections. It is applicable to a wide range of permeable surfaces, like perforated plates and lamellar screens. The model is described in [1]. More details in the included documentation.
[1] A pressure–velocity jump approach for the CFD modelling of permeable surfaces. Xu, M., Patruno, L., & de Miranda, S., Journal of Wind Engineering and Industrial Aerodynamics, 233, 105317, 2023.