Particle-drag model wherein drag forces (per unit carrier-fluid velocity) are dynamically computed based on the Du Plessis-Masliyah drag model. More...
Public Member Functions | |
| TypeName ("PlessisMasliyahDrag") | |
| Runtime type information. More... | |
| PlessisMasliyahDragForce (CloudType &owner, const fvMesh &mesh, const dictionary &dict) | |
| Construct from mesh. More... | |
| PlessisMasliyahDragForce (const PlessisMasliyahDragForce< CloudType > &df) | |
| Construct copy. More... | |
| virtual autoPtr< ParticleForce< CloudType > > | clone () const |
| Construct and return a clone. More... | |
| void | operator= (const PlessisMasliyahDragForce< CloudType > &)=delete |
| No copy assignment. More... | |
| virtual | ~PlessisMasliyahDragForce ()=default |
| Destructor. More... | |
| virtual forceSuSp | calcCoupled (const typename CloudType::parcelType &p, const typename CloudType::parcelType::trackingData &td, const scalar dt, const scalar mass, const scalar Re, const scalar muc) const |
| Calculate the coupled force. More... | |
 Public Member Functions inherited from ParticleForce< CloudType > | |
| TypeName ("particleForce") | |
| Runtime type information. More... | |
| declareRunTimeSelectionTable (autoPtr, ParticleForce, dictionary,(CloudType &owner, const fvMesh &mesh, const dictionary &dict),(owner, mesh, dict)) | |
| Declare runtime constructor selection table. More... | |
| ParticleForce (CloudType &owner, const fvMesh &mesh, const dictionary &dict, const word &forceType, const bool readCoeffs) | |
| Construct from mesh. More... | |
| ParticleForce (const ParticleForce &pf) | |
| Construct copy. More... | |
| virtual autoPtr< ParticleForce< CloudType > > | clone () const |
| Construct and return a clone. More... | |
| virtual | ~ParticleForce () |
| Destructor. More... | |
| const CloudType & | owner () const |
| Return const access to the cloud owner. More... | |
| CloudType & | owner () |
| Return reference to the cloud owner. More... | |
| const fvMesh & | mesh () const |
| Return the mesh database. More... | |
| const dictionary & | coeffs () const |
| Return the force coefficients dictionary. More... | |
| virtual void | cacheFields (const bool store) |
| Cache fields. More... | |
| virtual forceSuSp | calcCoupled (const typename CloudType::parcelType &p, const typename CloudType::parcelType::trackingData &td, const scalar dt, const scalar mass, const scalar Re, const scalar muc) const |
| Calculate the coupled force. More... | |
| virtual forceSuSp | calcNonCoupled (const typename CloudType::parcelType &p, const typename CloudType::parcelType::trackingData &td, const scalar dt, const scalar mass, const scalar Re, const scalar muc) const |
| Calculate the non-coupled force. More... | |
| virtual scalar | massAdd (const typename CloudType::parcelType &p, const typename CloudType::parcelType::trackingData &td, const scalar mass) const |
| Return the added mass. More... | |
Additional Inherited Members | |
| Public Types inherited from ParticleForce< CloudType > | |
| typedef VectorSpace< Vector< vector >, vector, 2 > | returnType |
| Convenience typedef for return type. More... | |
| Static Public Member Functions inherited from ParticleForce< CloudType > | |
| static autoPtr< ParticleForce< CloudType > > | New (CloudType &owner, const fvMesh &mesh, const dictionary &dict, const word &forceType) |
| Selector. More... | |
Particle-drag model wherein drag forces (per unit carrier-fluid velocity) are dynamically computed based on the Du Plessis-Masliyah drag model.
\[ \mathrm{F}_\mathrm{D} = \left(\mathrm{A}\, (1-\alpha_c) + \mathrm{B}\, \mathrm{Re}\right) \frac{(1-\alpha_c)\, \mu_c}{\alpha_c^2\, d_p^2} \]
with
\[ A = \frac{26.8\, \alpha_c^2} { \alpha_p^{2/3} (1 - \alpha_p^{1/3}) (1 - \alpha_p^{2/3}) } \]
\[ \mathrm{B} = \frac{\alpha_c^2}{\left( 1 - \alpha_p^{2/3} \right)^2} \]
\[ \mathrm{Re}_p = \frac{\rho_c \, | \mathbf{u}_\mathrm{rel} | \, d_p}{\mu_c} \]
where
| \( \mathrm{F}_\mathrm{D} \) | = | Drag force per carrier-fluid velocity [kg/s] |
| \( \mathrm{Re}_p \) | = | Particle Reynolds number |
| \( \mu_c \) | = | Dynamic viscosity of carrier at the cell occupying particle |
| \( d_p \) | = | Particle diameter |
| \( \rho_c \) | = | Density of carrier at the cell occupying particle |
| \( \mathbf{u}_\mathrm{rel} \) | = | Relative velocity between particle and carrier |
| \( \alpha_c \) | = | Volume fraction of carrier fluid |
| \( \alpha_p \) | = | Volume fraction of particles |
References:
Standard model (tag:P), (Eq. 34-36):
Du Plessis, J. P. (1994).
Analytical quantification of coefficients in the
Ergun equation for fluid friction in a packed bed.
Transport in porous media, 16(2), 189-207.
DOI:10.1007/BF00617551constant/<CloudProperties>: subModels
{
particleForces
{
PlessisMasliyahDrag
{
alphac <alphacName>; // e.g. alpha.air
}
}
}
where the entries mean:
| Property | Description | Type | Reqd | Deflt |
|---|---|---|---|---|
type | Type name: PlessisMasliyahDrag | word | yes | - |
alphac | Name of carrier fluid | word | yes | - |
Definition at line 182 of file PlessisMasliyahDragForce.H.
| PlessisMasliyahDragForce | ( | CloudType & | owner, |
| const fvMesh & | mesh, | ||
| const dictionary & | dict | ||
| ) |
Construct from mesh.
Definition at line 34 of file PlessisMasliyahDragForce.C.
| PlessisMasliyahDragForce | ( | const PlessisMasliyahDragForce< CloudType > & | df | ) |
Construct copy.
Definition at line 53 of file PlessisMasliyahDragForce.C.
|
virtualdefault |
Destructor.
| TypeName | ( | "PlessisMasliyahDrag" | ) |
Runtime type information.
|
inlinevirtual |
Construct and return a clone.
Reimplemented from ParticleForce< CloudType >.
Definition at line 212 of file PlessisMasliyahDragForce.H.
|
delete |
No copy assignment.
|
virtual |
Calculate the coupled force.
Reimplemented from ParticleForce< CloudType >.
Definition at line 72 of file PlessisMasliyahDragForce.C.
References A, B, Foam::cbrt(), p, Foam::pow3(), Foam::Re(), Foam::sqr(), and Foam::Zero.
1.9.5