PilchErdman< CloudType > Class Template Reference

Particle secondary breakup model based on Pilch-Erdman total droplet breakup model. More...

Inheritance diagram for PilchErdman< CloudType >:

Collaboration diagram for PilchErdman< CloudType >:

Public Member Functions
	TypeName ("PilchErdman")
	Runtime type information. More...
	PilchErdman (const dictionary &, CloudType &)
	Construct from dictionary. More...
	PilchErdman (const PilchErdman< CloudType > &bum)
	Construct copy. More...
virtual autoPtr< BreakupModel< CloudType > >	clone () const
	Construct and return a clone. More...
void	operator= (const PilchErdman< CloudType > &)=delete
	No copy assignment. More...
virtual	~PilchErdman ()=default
	Destructor. More...
virtual bool	update (const scalar dt, const vector &g, scalar &d, scalar &tc, scalar &ms, scalar &nParticle, scalar &KHindex, scalar &y, scalar &yDot, const scalar d0, const scalar rho, const scalar mu, const scalar sigma, const vector &U, const scalar rhoc, const scalar muc, const vector &Urel, const scalar Urmag, const scalar tMom, scalar &dChild, scalar &massChild)
	Update the parcel properties. More...
Public Member Functions inherited from BreakupModel< CloudType >
	TypeName ("breakupModel")
	Runtime type information. More...
	declareRunTimeSelectionTable (autoPtr, BreakupModel, dictionary,(const dictionary &dict, CloudType &owner),(dict, owner))
	Declare runtime constructor selection table. More...
	BreakupModel (CloudType &owner)
	Construct null from owner. More...
	BreakupModel (const dictionary &dict, CloudType &owner, const word &type, bool solveOscillationEq=false)
	Construct from dictionary. More...
	BreakupModel (const BreakupModel< CloudType > &bum)
	Construct copy. More...
virtual	~BreakupModel ()
	Destructor. More...
bool	solveOscillationEq () const
const scalar &	y0 () const
const scalar &	yDot0 () const
const scalar &	TABComega () const
const scalar &	TABCmu () const
const scalar &	TABtwoWeCrit () const

Additional Inherited Members
Static Public Member Functions inherited from BreakupModel< CloudType >
static autoPtr< BreakupModel< CloudType > >	New (const dictionary &dict, CloudType &owner)
	Selector. More...
Protected Attributes inherited from BreakupModel< CloudType >
bool	solveOscillationEq_
scalar	y0_
scalar	yDot0_
scalar	TABComega_
scalar	TABCmu_
scalar	TABtwoWeCrit_

Detailed Description

template<class CloudType>
class Foam::PilchErdman< CloudType >

Particle secondary breakup model based on Pilch-Erdman total droplet breakup model.

Reference:

    Pilch, M., & Erdman, C. A. (1987).
    Use of breakup time data and velocity history data
    to predict the maximum size of stable fragments for
    acceleration-induced breakup of a liquid drop.
    International journal of multiphase flow, 13(6), 741-757.
    DOI:10.1016/0301-9322(87)90063-2

The droplet fragment velocity is described by the equation:

\[ V_d = V \sqrt(\epsilon)(B_1 T + B_2 T^2) \]

where

\( V_d \)	=	Fragment velocity
\( V \)	=	Magnitude of the relative velocity
\( \epsilon \)	=	Density ratio (rho_carrier/rho_droplet)
\( T \)	=	characteristic break-up time
\( B_1 \)	=	Model coefficient
\( B_2 \)	=	Model coefficient

Where:

The authors suggest that: compressible flow : B1 = 0.75*1.0; B2 = 3*0.116 incompressible flow : B1 = 0.75*0.5; B2 = 3*0.0758

Source files

• PilchErdman.H
• PilchErdman.C

Definition at line 111 of file PilchErdman.H.

Constructor & Destructor Documentation

PilchErdman() [1/2]

PilchErdman	(	const dictionary &	dict,
		CloudType &	owner
	)

Construct from dictionary.

Definition at line 35 of file PilchErdman.C.

PilchErdman() [2/2]

PilchErdman

(

const PilchErdman< CloudType > &

bum

)

Construct copy.

Definition at line 53 of file PilchErdman.C.

~PilchErdman()

virtual ~PilchErdman ( )

virtualdefault

Destructor.

Member Function Documentation

TypeName()

TypeName

(

"PilchErdman< CloudType >"

)

Runtime type information.

clone()

virtual autoPtr<BreakupModel<CloudType> > clone ( ) const

inlinevirtual

Construct and return a clone.

Implements BreakupModel< CloudType >.

Definition at line 139 of file PilchErdman.H.

operator=()

void operator= ( const PilchErdman< CloudType > &  )

delete

No copy assignment.

update()

bool update ( const scalar  dt, const vector &  g, scalar &  d, scalar &  tc, scalar &  ms, scalar &  nParticle, scalar &  KHindex, scalar &  y, scalar &  yDot, const scalar  d0, const scalar  rho, const scalar  mu, const scalar  sigma, const vector &  U, const scalar  rhoc, const scalar  muc, const vector &  Urel, const scalar  Urmag, const scalar  tMom, scalar &  dChild, scalar &  massChild  )

virtual

Update the parcel properties.

Implements BreakupModel< CloudType >.

Definition at line 65 of file PilchErdman.C.

References Foam::max(), Foam::constant::physicoChemical::mu, Foam::pow(), Foam::pow3(), rho, sigma(), Foam::sqr(), and Foam::sqrt().

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The documentation for this class was generated from the following files:

• src/lagrangian/spray/submodels/BreakupModel/PilchErdman/PilchErdman.H
• src/lagrangian/spray/submodels/BreakupModel/PilchErdman/PilchErdman.C