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Divergence detected in AMG Solver: x momentum in Fluent multiphase model

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Old   April 5, 2018, 19:50
Post Divergence detected in AMG Solver: x momentum in Fluent multiphase model
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Adnan Shahariar
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Hello everyone,
I am working on a 2D problem of jet impingement cooling. machining. In this problem, water jet is applying on the hot rectangular surface through a nozzle. The temperature of the hot surface is 700 Kelvin. I am using the mixture option in the multiphase model. But when I increase the inlet jet velocity more than 0.5 m/s then divergence occurs in momentum.
I have reduced the URF values. But the problem persists. I have tried mesh repair and improvement commands but the problem persists. I have also tried it with K-omega model but the problem continues to exist.
I have tried with all triangles and multizone quad-tri mesh with body sizing. Inflation was also done.

Last edited by adnanshahariar; April 5, 2018 at 20:01. Reason: There are some errors
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divergence amg solver, momentum equation, multiphase flow, velocity component


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