{"id":164344,"date":"2021-11-27T18:45:47","date_gmt":"2021-11-27T18:45:47","guid":{"rendered":"\/forum\/forums\/topic\/no-fluid-flow-through-pressure-outlet\/"},"modified":"2021-12-01T17:47:59","modified_gmt":"2021-12-01T17:47:59","slug":"no-fluid-flow-through-pressure-outlet","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/no-fluid-flow-through-pressure-outlet\/","title":{"rendered":"No fluid flow through pressure outlet"},"content":{"rendered":"
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Hi all,<\/p>\n

Working on a project where I'm trying to recreate a paper, given here: https:\/\/www.researchgate.net\/publication\/276440640_CFD_simulation_of_vented_explosion_and_turbulent_flame_propagation<\/a><\/p>\n

I've made two zones. One is encased in adiabatic walls with an outlet, which I locked as to not have SpaceClaim automatically merge the bodies together. The other is simply a large body for the purposes of having the flame propagate. The internals of both are both fluids, with the inner body having methane\/air and the outer body being simply air. Between the two (I think) is only a square that I'm setting as an outlet. I've tried pressure outlets, outflow, and outlet vents as a boundary condition in hopes that the combusted materials and heat will flow through it, but nothing flows through. That being said, the pressure seems to somehow either escape, or is not being generated at all.<\/p>\n

My combustion is set up with a smaller zone at the temperature given in the paper (2673 K) and the inner box is filled with methane\/air. When running at steady or transient, there is nothing that passes through. I tried patching a higher temperature in the combustion chamber, but nothing went through the set outlet still. Here are two images of my resulting temperature and pressure:<\/p>\n

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