Transport package using the Williams-Landel-Ferry model for viscosity of polymer melts: More...
Public Member Functions | |
WLFTransport (const Thermo &t, const scalar mu0, const scalar Tr, const scalar C1, const scalar C2, const scalar Pr) | |
Construct from components. More... | |
WLFTransport (const word &, const WLFTransport &) | |
Construct as named copy. More... | |
WLFTransport (const word &name, const dictionary &dict) | |
Construct from name and dictionary. More... | |
autoPtr< WLFTransport > | clone () const |
Construct and return a clone. More... | |
scalar | mu (const scalar p, const scalar T) const |
Dynamic viscosity [kg/m/s]. More... | |
scalar | kappa (const scalar p, const scalar T) const |
Thermal conductivity [W/m/K]. More... | |
void | write (Ostream &os) const |
Write to Ostream. More... | |
void | operator+= (const WLFTransport &) |
void | operator*= (const scalar) |
Static Public Member Functions | |
static word | typeName () |
Return the instantiated type name. More... | |
Friends | |
WLFTransport | operator+ (const WLFTransport &, const WLFTransport &) |
WLFTransport | operator* (const scalar, const WLFTransport &) |
Ostream & | operator (Ostream &, const WLFTransport &) |
Transport package using the Williams-Landel-Ferry model for viscosity of polymer melts:
mu = mu0*exp(-C1*(T - Tr)/(C2 + T - Tr))
References:
Williams, M. L., Landel, R. F., & Ferry, J. D. (1955). The temperature dependence of relaxation mechanisms in amorphous polymers and other glass-forming liquids. Journal of the American Chemical society, 77(14), 3701-3707.
The thermal conductivity is obtained using a constant Prandtl number.
Property | Description |
---|---|
mu0 | Reference dynamic viscosity [Pa.s] |
Tref | Reference temperature [K] |
C1 | WLF constant [] |
C2 | WLF constant [K] |
Pr | Constant Prandtl number [] |
Example specification of WLFTransport for a polymer:
transport { mu0 50000; Tr 416; C1 20.4; C2 101.6; Pr 10000; }
Definition at line 129 of file WLFTransport.H.
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Construct from components.
Definition at line 31 of file WLFTransportI.H.
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Construct as named copy.
Definition at line 51 of file WLFTransportI.H.
WLFTransport | ( | const word & | name, |
const dictionary & | dict | ||
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Construct from name and dictionary.
Definition at line 45 of file WLFTransport.C.
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Construct and return a clone.
Definition at line 68 of file WLFTransportI.H.
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inlinestatic |
Return the instantiated type name.
Definition at line 185 of file WLFTransport.H.
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Dynamic viscosity [kg/m/s].
Definition at line 80 of file WLFTransportI.H.
References Foam::exp(), and Foam::T().
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Thermal conductivity [W/m/K].
Definition at line 91 of file WLFTransportI.H.
References Cp(), Foam::constant::physicoChemical::mu, p, and Foam::T().
void write | ( | Ostream & | os | ) | const |
Write to Ostream.
Definition at line 63 of file WLFTransport.C.
References dictionary::add(), token::BEGIN_BLOCK, Foam::decrIndent(), dict, dictionaryName::dictName(), token::END_BLOCK, Foam::endl(), Foam::incrIndent(), Foam::indent(), specie::name(), Foam::nl, and Foam::vtkWriteOps::write().
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Definition at line 104 of file WLFTransportI.H.
References Foam::mag(), and Y.
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Definition at line 128 of file WLFTransportI.H.
References s().
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