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Lagrangian particles adddition to interFoam using swak4Foam

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Old   August 19, 2022, 05:43
Default Lagrangian particles adddition to interFoam using swak4Foam
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scp
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Baba
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Hi,


I am trying to simulate rising of bubble in a solid-liquid suspension. For the bubble-liquid interface interFoam solver is used. Particle addition is carried out by swak4Foam. But when I am running the simulations, I am getting a warning like "No entry 'dimension' in field muField". However I am able to complete the simulations.

Should I do something?

Please help.


Thanks in advance,
Baba
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Old   August 20, 2022, 08:34
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Quote:
Originally Posted by scp View Post
Hi,


I am trying to simulate rising of bubble in a solid-liquid suspension. For the bubble-liquid interface interFoam solver is used. Particle addition is carried out by swak4Foam. But when I am running the simulations, I am getting a warning like "No entry 'dimension' in field muField". However I am able to complete the simulations.

Should I do something?

Please help.


Thanks in advance,
Baba

No. swak turns of dimension checking for its calculations because that would complicate things for the user (for instance: half of the numeric constants people use in expressions would need to have to have dimensions added to them. Otherwise dimension checking when adding them to a field that is not dimensionless would fail). Of course that disables one of the cool (and for the novice user annoying) features of OF: dimension checking. swak4Foam assumes that the user did the dimension checking of his expressions by hand

The expressionField function object allows the user to specify a dimension for the result post-calculation because sometimes it is used to "mock" the existence of a field for a boundary condition etc that checks for that dimension. Also: it is good practice to add that dimension to document "I checked the dimension: this is it". I rarely do this. But this only proofs what I always say "Just because I wrote swak4Foam doesn't mean that I use it properly"
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Old   August 23, 2022, 02:45
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Thank you very much for your response.


Sincerely,
Baba
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interfoam bubble, lagrangian particles, swak4foam

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