April 3, 2022 at 12:55 amhmilySubscriber
With ideal air as the medium, when the flow inlet conditions of the three-dimensional model are directly assigned to the two-dimensional model, the simulated gas velocity is much smaller than that of the three-dimensional calculation. Excuse me, how to give a correct boundary condition of mass flow entrance in a two-dimensional model.Thank you!April 4, 2022 at 3:26 pmRobAnsys EmployeeThat depends. In 2d we assume the domain is 1m thick so you can scale the mass flow to ensure you add enough mass, but the velocity may not agree with the 3d case. Or you can calculate the velocity in 3d and use that boundary condition, but the mass flow may not agree with the 3d case.
With 2d you're making an assumption about the domain, and therefore flow. If the mass (or velocity) doesn't tie up is the 2d assumption really valid?
April 5, 2022 at 1:24 amhmilySubscriber
April 5, 2022 at 1:24 amhmilySubscriberYour answer is very helpful. Thank you very much´╝ü
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