Hi, The WallAdiabatic is fine as you have now in your example. Regarding the PressureOutflow, note that at the moment we cannot specify multiple outlets with different pressures, as “VALUE" is not being used. The values of rho, rhou, rhov, rhow, and E that are being used at the boundary are calculated from rhoInf, uInf, vInf, wInf and pInf, that are specified under CONDITIONS, in your .xml file. In particular, they are calculated from as follows: rho = rhoInf rhou = rhoInf * uInf rhov = rhoInf * vInf rhow = rhoInf * wInf E = pInf / (Gamma - 1) + 0.5 * rhoInf * (uInf^2 + vInf^2 + wInf^2) We certainly plan to add the possibility of choosing different pressures for multiple outlets, but this is likely not to happen shortly. Best, Gianmarco

On Dec 20, 2018, at 9:03 AM, 中华腾飞 <592835068@qq.com> wrote:

Hi all! I am using the compressible flow solver for NS. I want to give static pressure 'p0eInf' on my outlet, i have defined its value in parameters . Can you help me check out my example? By the way, i don't know how to set 'WallAdiabatic' boundary conditions ,can you help me check out my example? <57EBFB99@2DFFDB7B.BB4C1B5C.jpg>

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Sometimes when i run the calculation,it will report an error called 'vacuum is generated by given data'.If i change the TimeStep , it will calculate some steps.How to explain it?

Looking forward to your replay!

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