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Problems with particle injection with zero velocity

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Old   August 7, 2019, 12:47
Default Problems with particle injection with zero velocity
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Eduardo Cruz
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Hi everyone,



while using the icoUncoupledKinematicParcelFoam solver with injectionType patchInjection, I noticed some strange behaviour regarding particle initial velocity. Setting U0 to (0.0 0.0 0.0) in constant/kinematicCloudProperties had the same effect as initializing it as flow velocity. I'd like to know why this is happening and if it should happen.


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Old   August 7, 2019, 22:02
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Utkan Caliskan
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Colliding type parcels (DPMFoam and uncoupledKinematicParcelFoam) are not supposed to be injected with patchInjection as there might be a big overlap between particles initially which causes unrealistic behaviour. I believe setting inlet velocity to zero would make it even worse.
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Old   August 8, 2019, 10:26
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Eduardo Cruz
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Even if I set collisionModel to none? The simulation is steady-state, by the way.


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Old   August 9, 2019, 23:39
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Utkan Caliskan
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Without collisionModel it shouldn't be a problem. Could you share your kinematicCloudProperties file?
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