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Particle injection at fluid velocity

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Old   October 22, 2019, 15:15
Default Particle injection at fluid velocity
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Andrew Kuprat
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I'm injecting particles into a geometry using MPPICFoam (OpenFOAM-7) and the standard tutorial injection velocity is zero:
constant/kinematicCloudProperties:

subModels
{
injectionModels
{
inletInjection
{
type patchInjection;

U0 (0 0 0);
etc.

However, I want to inject particles at the continuum fluid velocity (U.air). When I replace the relevant line above with
U0 U.air;
it gives an error because it is looking for a '(' character. Is there some way of injecting at fluid velocity U.air?
Andrew

Last edited by kuprat; October 22, 2019 at 17:48. Reason: correction
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Old   January 20, 2023, 17:32
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Is there a solution to this question? Thanks
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Old   January 21, 2023, 10:16
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Alain Islas
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Dear balloon,

Please note that the particle injection velocity should be specified in vector format, i.e., (# # #). If you want the particles to have the same initial velocity as the carrier, just input the same value as the one defined in 0/U.air.
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