Allen P Varghese
That line indicates a perforated plate which is part of the model. The region I created depicts the fluid volume below the plate and I was trying to patch that region with n2liquid to 1.nI did initialize with 0 n2liquid over the whole domain and then tried to patch the marked region with n2liquid 1 but it wasn't working. I tried different models and also different meshes to troubleshoot but for some reason, regions aren't getting patched. That is when I found that cell zones are getting patched successfully, thus I split the cell zone into two and patched them as explained in the previous post.n