Public Member Functions | Static Public Member Functions | Friends | List of all members
WLFTransport< Thermo > Class Template Reference

Transport package using the Williams-Landel-Ferry model for viscosity of polymer melts: More...

Inheritance diagram for WLFTransport< Thermo >:
Inheritance graph
[legend]
Collaboration diagram for WLFTransport< Thermo >:
Collaboration graph
[legend]

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 &)
 

Detailed Description

template<class Thermo>
class Foam::WLFTransport< Thermo >

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.

Usage
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;
    }
Source files

Definition at line 129 of file WLFTransport.H.

Constructor & Destructor Documentation

◆ WLFTransport() [1/3]

WLFTransport ( const Thermo &  t,
const scalar  mu0,
const scalar  Tr,
const scalar  C1,
const scalar  C2,
const scalar  Pr 
)
inline

Construct from components.

Definition at line 31 of file WLFTransportI.H.

◆ WLFTransport() [2/3]

WLFTransport ( const word &  name,
const WLFTransport< Thermo > &  wlft 
)
inline

Construct as named copy.

Definition at line 51 of file WLFTransportI.H.

◆ WLFTransport() [3/3]

WLFTransport ( const word &  name,
const dictionary &  dict 
)

Construct from name and dictionary.

Definition at line 45 of file WLFTransport.C.

Member Function Documentation

◆ clone()

Foam::autoPtr< Foam::WLFTransport< Thermo > > clone
inline

Construct and return a clone.

Definition at line 68 of file WLFTransportI.H.

◆ typeName()

static word typeName ( )
inlinestatic

Return the instantiated type name.

Definition at line 185 of file WLFTransport.H.

◆ mu()

Foam::scalar mu ( const scalar  p,
const scalar  T 
) const
inline

Dynamic viscosity [kg/m/s].

Definition at line 80 of file WLFTransportI.H.

References Foam::exp(), and Foam::T().

Here is the call graph for this function:

◆ kappa()

Foam::scalar kappa ( const scalar  p,
const scalar  T 
) const
inline

Thermal conductivity [W/m/K].

Definition at line 91 of file WLFTransportI.H.

References Cp(), Foam::constant::physicoChemical::mu, p, and Foam::T().

Here is the call graph for this function:

◆ write()

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().

Here is the call graph for this function:

◆ operator+=()

void operator+= ( const WLFTransport< Thermo > &  )
inline

Definition at line 104 of file WLFTransportI.H.

References Foam::mag(), and Y.

Here is the call graph for this function:

◆ operator*=()

void operator*= ( const scalar  s)
inline

Definition at line 128 of file WLFTransportI.H.

References s().

Here is the call graph for this function:

Friends And Related Function Documentation

◆ operator+

WLFTransport operator+ ( const WLFTransport< Thermo > &  ,
const WLFTransport< Thermo > &   
)
friend

◆ operator*

WLFTransport operator* ( const  scalar,
const WLFTransport< Thermo > &   
)
friend

◆ operator

Ostream& operator ( Ostream &  ,
const WLFTransport< Thermo > &   
)
friend
The documentation for this class was generated from the following files: