Initialises turbulence fields according to various empirical governing equations. More...

Detailed Description

Initialises turbulence fields according to various empirical governing equations.

Original source file setTurbulenceFields.C

References:

    Initialisation method (tag:M):
        Manceau, R. (n.d.).
        A two-step automatic initialization
        procedure for RANS computations.
        (Unpublished).

    Previous-version of the initialisation model (tag:LM):
        Lardeau, S., & Manceau, R. (2014).
        Computations of complex flow configurations using
        a modified elliptic-blending Reynolds-stress model.
        10th International ERCOFTAC Symposium on Engineering
        Turbulence Modelling and Measurements. Marbella, Spain.
        https://hal.archives-ouvertes.fr/hal-01051799

Usage

Minimal example by using system/setTurbulenceFieldsDict:

    // Mandatory entries
    uRef            <scalar>;

    // Optional entries
    initialiseU     <bool>;
    initialiseEpsilon <bool>;
    initialiseK     <bool>;
    initialiseOmega <bool>;
    initialiseR     <bool>;
    writeF          <bool>;

    kappa           <scalar>;
    Cmu             <scalar>;
    dPlusRef        <scalar>;

    f               <word>;
    U               <word>;
    epsilon         <word>;
    k               <word>;
    omega           <word>;
    R               <word>;

where the entries mean:

Property	Description	Type	Reqd	Deflt
`uRef`	Reference speed	scalar	yes	-
`initialiseU`	Flag to initialise U	bool	no	false
`initialiseEpsilon`	Flag to initialise epsilon	bool	no	false
`initialiseK`	Flag to initialise k	bool	no	false
`initialiseOmega`	Flag to initialise omega	bool	no	false
`initialiseR`	Flag to initialise R	bool	no	false
`writeF`	Flag to write elliptic-blending field, f	bool	no	false
`kappa`	von Karman constant	scalar	no	0.41
`Cmu`	Empirical constant	scalar	no	0.09
`dPlusRef`	Reference dPlus	scalar	no	15
`f`	Name of operand f field	word	no	f
`U`	Name of operand U field	word	no	U
`epsilon`	Name of operand epsilon field	word	no	epsilon
`k`	Name of operand k field	word	no	k
`omega`	Name of operand omega field	word	no	omega
`R`	Name of operand R field	word	no	R

Note

Time that the utility applies to is determined by the controlDict.startFrom and controlDict.startTime entries.
The utility modifies near-wall fields, hence can be more effective for low-Re mesh cases.

Definition in file setTurbulenceFields.C.