Commit 13c2abac authored by Deepak Rangarajan's avatar Deepak Rangarajan Committed by Jordan Musser
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Option from mr1410 mixture viscosity (!120)

parent 87baaba5
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+7 −0
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@@ -93,6 +93,13 @@ pages = {379-402}
  url = {https://www.sciencedirect.com/science/article/pii/S0021999120305945},
}

@book{bird06,
  author = {Bird, R B and Stewart, W E and Lightfoot, E N},
  title = {Transport Phenomena 2nd Edition},
  year = {2006},
  publisher={Wiley}
}

@article{blais2019,
  title={Experimental methods in chemical engineering: Discrete element method--DEM},
  author={Blais, Bruno and Vidal, David and Bertrand, Francois and Patience, Gregory S and Chaouki, Jamal},
+11 −1
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.. _InputsFluidModel:

Fluid model
===========

@@ -19,12 +21,14 @@ a single fluid; therefore, it is common to name the fluid ``fluid``. This is ill

.. |Sutherland_Eq| replace:: :math:`\mu(T) = \mu_{ref}\left(\frac{T}{T_{ref}}\right)^{3/2}\frac{T_{ref} + S}{T+S}`

.. |Reid_4parm_Eq| replace:: :math:`\mu(T) = A\exp{\left( \frac{B}{T} + CT + DT^2 \right)}`
.. |Reid_4parm_Eq| replace:: :math:`\mu(T) = Ae^{\left(\frac{B}{T} + CT + DT^2 \right)}`

.. |Sato_Eq| replace:: :math:`\mu_{pit} = C d_s \rho \left|\boldsymbol{u} - \boldsymbol{u_s}\right|`

.. |eff_visc| replace:: :math:`\mu_{eff} = \mu_{mol} + \mu_{eddy} + \mu_{susp} + \mu_{pit}`

.. |mix_Eq| replace:: :math:`\mu_{mix} = \sum_{\alpha=1}^{N} \frac{X_{\alpha} \mu_{\alpha}}{\sum_{\beta} X_{\beta} \phi_{\alpha \beta}}`

+--------------------------------------------+------------------------------------------------------------+--------+----------+
|                                            | Description                                                |  Type  | Default  |
+============================================+============================================================+========+==========+
@@ -41,6 +45,12 @@ a single fluid; therefore, it is common to name the fluid ``fluid``. This is ill
|                                            |                                                            |        |          |
|                                            |      |Reid_4parm_Eq|                                       |        |          |
|                                            |                                                            |        |          |
|                                            | * ``mixture`` a mixture viscosity is computed from         |        |          |
|                                            |   :ref:`species viscosities<InputsSpeciesDefs>`            |        |          |
|                                            |   and local species mass fractions :cite:p:`bird06`        |        |          |
|                                            |                                                            |        |          |
|                                            |      |mix_Eq|                                              |        |          |
|                                            |                                                            |        |          |
|                                            | A viscosity model is required if the fluid solver is       |        |          |
|                                            | enabled.                                                   |        |          |
+--------------------------------------------+------------------------------------------------------------+--------+----------+
+33 −6
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@@ -52,20 +52,26 @@ The following inputs are defined using the ``species`` prefix.
|                          | Therefore, this option should only be used when the simulation is not  |          |           |
|                          | expected to cross over the transition temperature.                     |          |           |
+--------------------------+------------------------------------------------------------------------+----------+-----------+
| viscosity.molecular      | Molecular viscosity model of species. This setting only applies when   |  String  |  0        |
|                          | ``fluid.viscosity.molecular = mixture``.                               |          |           |
|                          |                                                                        |          |           |
|                          | Options are ``constant`` or ``Sutherland`` or ``Reid``.                |          |           |
|                          | See :ref:`viscosity model descriptions <InputsFluidModel>`.            |          |           |
+--------------------------+------------------------------------------------------------------------+----------+-----------+


The following inputs are for each species defined using the ``species.[species name]`` prefix.

+--------------------------+------------------------------------------------------------------------+----------+-----------+
+---------------------------------------+------------------------------------------------------------------------+----------+-----------+
|                                       | Description                                                            |   Type   | Default   |
+==========================+========================================================================+==========+===========+
+=======================================+========================================================================+==========+===========+
| molecular_weight                      | Molecular weight of species. Required for mixture molecular weight     |  Real    |  0        |
|                                       | model and when including chemical reactions.                           |          |           |
+--------------------------+------------------------------------------------------------------------+----------+-----------+
+---------------------------------------+------------------------------------------------------------------------+----------+-----------+
| specific_heat.constant                | Constant species specific heat. Required for all fluid (solids)        |  Real    |  0        |
|                                       | species if the fluid (solids) ``specific_heat = mixture`` and the      |          |           |
|                                       | specific heat model is ``constant``                                    |          |           |
+--------------------------+------------------------------------------------------------------------+----------+-----------+
+---------------------------------------+------------------------------------------------------------------------+----------+-----------+
| specific_heat.NASA7.a[i]              | Species specific heat polynomial coefficients. Required for all fluid  |  Real    |  0.  0.   |
|                                       | (solids) species if the fluid (solids) ``specific_heat = mixture``     |          |           |
|                                       | and the specific heat model is ``NASA7-poly``                          |          |           |
@@ -76,11 +82,32 @@ The following inputs are for each species defined using the ``species.[species n
|                                       | the coefficient for the high temperature polynomial (T > 1000K). A     |          |           |
|                                       | total of twelve coefficients are required.                             |          |           |
|                                       |                                                                        |          |           |
+--------------------------+------------------------------------------------------------------------+----------+-----------+
+---------------------------------------+------------------------------------------------------------------------+----------+-----------+
| enthalpy_of_formation                 | Enthalpy of formation of species. This input is required only when     |  Real    |  0        |
|                                       | the specific heat model is ``constant`` and chemical reactions         |          |           |
|                                       | are defined.                                                           |          |           |
+--------------------------+------------------------------------------------------------------------+----------+-----------+
+---------------------------------------+------------------------------------------------------------------------+----------+-----------+
| viscosity.molecular.constant          | Constant species fluid viscosity.                                      |  Real    |  0        |
|                                       |                                                                        |          |           |
|                                       | A value is required for ``constant`` species viscosity model.          |          |           |
+---------------------------------------+------------------------------------------------------------------------+----------+-----------+
| viscosity.molecular.Sutherland.T_ref  | Sutherland model reference temperature for species.                    |  Real    |  0        |
|                                       |                                                                        |          |           |
|                                       | A value is required for ``Sutherland`` species viscosity model.        |          |           |
+---------------------------------------+------------------------------------------------------------------------+----------+-----------+
| viscosity.molecular.Sutherland.mu_ref | Sutherland model reference viscosity at T_ref for species.             |  Real    |  0        |
|                                       |                                                                        |          |           |
|                                       | A value is required for ``Sutherland`` species viscosity model.        |          |           |
+---------------------------------------+------------------------------------------------------------------------+----------+-----------+
| viscosity.molecular.Sutherland.S      | Sutherland model temperature for species.                              |  Real    |  0        |
|                                       |                                                                        |          |           |
|                                       | A value is required for ``Sutherland`` species viscosity model.        |          |           |
+---------------------------------------+------------------------------------------------------------------------+----------+-----------+
| viscosity.molecular.Reid.A,           | Reid model constants for species.                                      |  Real    |  0        |
| viscosity.molecular.Reid.B,           |                                                                        |          |           |
| viscosity.molecular.Reid.C, and       | Values are required for ``Reid`` species viscosity model.              |          |           |
| viscosity.molecular.Reid.D            |                                                                        |          |           |
+---------------------------------------+------------------------------------------------------------------------+----------+-----------+