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63 lines
1.9 KiB
Plaintext
63 lines
1.9 KiB
Plaintext
"CFDEMproject Website"_lws - "Main Page"_main :c
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:link(lws,http://www.cfdem.com)
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:link(main,CFDEMcoupling_Manual.html)
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:line
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smoothingModel temporalSmoothing command :h3
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[Syntax:]
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Defined in dictionary depending on the application.
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smoothingModel temporalSmoothing;
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temporalSmoothingProps
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\{
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lowerLimit number1;
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upperLimit number2;
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refField referenceField;
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gamma smoothingStrength;
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\} :pre
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{number1} = scalar fields will be bound to this lower value :ulb,l
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{number2} = scalar fields will be bound to this upper value :l
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{referenceField} = reference to the un-smoothed field required for the relaxation operation :l
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{smoothingStrength} = control parameter for the smoothing, lower value yields stronger smoothing (gamma = 1 results in an equal contribution from the un-smoothed and smoothed fields) :l
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:ule
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[Examples:]
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temporalSmoothingProps
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\{
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lowerLimit 0.1;
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upperLimit 1e10;
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referenceField "p";
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gamma 1.0;
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\} :pre
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[Description:]
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The {temporalSmoothing} model is a smoothing model that utilizes temporal
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relaxation of a desired quantity. This model can be used to filter out
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high-frequency fluctuations (e.g. numerical noise) controlled via the control
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parameter gamma.
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Note that this model does NOT smooth the calculated fields, instead smoothing is
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performed on a separate (smooth) field which uses the calculated (un-smooth)
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field as a reference.
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Thus its usage is limited and CANNOT be used to smooth the exchange fields
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similar to other smoothing models.
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For further information see Vångö et al., "Unresolved CFD–DEM modeling of
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multiphase flow in densely packed particle beds", Appl. Math. Model. (2018).
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[Restrictions:]
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This model does NOT smooth the calculated fields and can therefore NOT be used
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as a general smoothing model to smoothen the exchange fields.
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Attempting this will generate an error.
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[Related commands:]
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"smoothingModel"_smoothingModel.html
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