lbm Namespace Reference

Common namespace for all LBM classes. More...

Classes
class	LBM
	Lattice Boltzmann Method fluid solver. More...
struct	PerformanceData
struct	Sphere

Enumerations
enum	Direction {   C = 0, N = 1, E = 2, S = 3,   W = 4, T = 5, B = 6, NE = 7,   SE = 8, SW = 9, NW = 10, TN = 11,   TE = 12, TS = 13, TW = 14, BN = 15,   BE = 16, BS = 17, BW = 18 }
	Directions of the 19 distribution values for each cell. More...
enum	Flag {   UNDEFINED = 0, FLUID = 1, NOSLIP = 2, VELOCITY = 3,   INFLOW = 4, OUTFLOW = 5, PRESSURE = 6 }
	Enum describing possible states of a cell. More...

Variables
const int	Dim = 19
	Number of distribution functions for each cell. More...
const int	ep [6][19]
	Products of lattice velocities. More...
const int	ex [19] = { 0, 0, 1, 0,-1, 0, 0, 1, 1,-1,-1, 0, 1, 0,-1, 0, 1, 0,-1 }
	Lattice velocities in x-direction. More...
const RealType	exn [19]
	Normalized lattice velocities in x-direction. More...
const int	ey [19] = { 0, 1, 0,-1, 0, 0, 0, 1,-1,-1, 1, 1, 0,-1, 0, 1, 0,-1, 0 }
	Lattice velocities in y-direction. More...
const RealType	eyn [19]
	Normalized lattice velocities in y-direction. More...
const int	ez [19] = { 0, 0, 0, 0, 0, 1,-1, 0, 0, 0, 0, 1, 1, 1, 1,-1,-1,-1,-1 }
	Lattice velocities in z-direction. More...
const RealType	ezn [19]
	Normalized lattice velocities in z-direction. More...
const Direction	fd [19]
	Corresponding Direction value for numeric directions 0 - 18. More...
const Direction	fdinv [19]
	Inverse Direction values for numeric directions 0 - 18. More...
const int	finv [19]
	Inverse lattice directions corresponding to numeric directions 0 - 18. More...
const RealType	le [19]
	Lengths of the lattice links. More...
const double	w [19]
	Weights of the distribution values for the collision step. More...

Detailed Description

Common namespace for all LBM classes.

Enumeration Type Documentation

enum lbm::Direction

Directions of the 19 distribution values for each cell.

Enumerator
C
N
E
S
W
T
B
NE
SE
SW
NW
TN
TE
TS
TW
BN
BE
BS
BW

Definition at line 20 of file D3Q19.h.

enum lbm::Flag

Enum describing possible states of a cell.

Enumerator
UNDEFINED
FLUID
NOSLIP
VELOCITY
INFLOW
OUTFLOW
PRESSURE

Definition at line 66 of file LBM.h.

Variable Documentation

const int lbm::Dim = 19

Number of distribution functions for each cell.

Definition at line 16 of file D3Q19.h.

Referenced by lbm::LBM< T >::collideStream(), lbm::LBM< T >::collideStreamSmagorinsky(), lbm::LBM< T >::moveSphere(), lbm::LBM< T >::setup(), lbm::LBM< T >::setupBoundary(), lbm::LBM< T >::treatCurved(), lbm::LBM< T >::treatNoslip(), lbm::LBM< T >::treatOutflow(), lbm::LBM< T >::treatStaircase(), and lbm::LBM< T >::treatVelocity().

const int lbm::ep[6][19]

Initial value:

= {

    { 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1 }, 
    { 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0 }, 
    { 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 }, 
    { 0, 0, 0, 0, 0, 0, 0, 1,-1, 1,-1, 0, 0, 0, 0, 0, 0, 0, 0 }, 
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0,-1, 0,-1, 0, 1 }, 
    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0,-1, 0,-1, 0, 1, 0 }  
}

Products of lattice velocities.

Definition at line 154 of file D3Q19.h.

Referenced by lbm::LBM< T >::collideStreamSmagorinsky().

const int lbm::ex[19] = { 0, 0, 1, 0,-1, 0, 0, 1, 1,-1,-1, 0, 1, 0,-1, 0, 1, 0,-1 }

Lattice velocities in x-direction.

Definition at line 140 of file D3Q19.h.

Referenced by lbm::LBM< T >::collideStream(), lbm::LBM< T >::collideStreamSmagorinsky(), lbm::LBM< T >::moveSphere(), lbm::LBM< T >::setup(), lbm::LBM< T >::setupBoundary(), lbm::LBM< T >::treatCurved(), lbm::LBM< T >::treatNoslip(), lbm::LBM< T >::treatOutflow(), lbm::LBM< T >::treatPressure(), lbm::LBM< T >::treatStaircase(), and lbm::LBM< T >::treatVelocity().

const RealType lbm::exn[19]

Initial value:

= { 0        , 0        , 1        , 0        , -1,  0,  0,

                           1/sqrt(2), 1/sqrt(2),-1/sqrt(2),-1/sqrt(2),

                           0        , 1/sqrt(2), 0        ,-1/sqrt(2),

                           0        , 1/sqrt(2), 0        ,-1/sqrt(2) }

Normalized lattice velocities in x-direction.

Definition at line 167 of file D3Q19.h.

Referenced by lbm::LBM< T >::moveSphere(), and lbm::LBM< T >::setup().

const int lbm::ey[19] = { 0, 1, 0,-1, 0, 0, 0, 1,-1,-1, 1, 1, 0,-1, 0, 1, 0,-1, 0 }

Lattice velocities in y-direction.

Definition at line 145 of file D3Q19.h.

Referenced by lbm::LBM< T >::collideStream(), lbm::LBM< T >::collideStreamSmagorinsky(), lbm::LBM< T >::moveSphere(), lbm::LBM< T >::setup(), lbm::LBM< T >::setupBoundary(), lbm::LBM< T >::treatCurved(), lbm::LBM< T >::treatNoslip(), lbm::LBM< T >::treatOutflow(), lbm::LBM< T >::treatPressure(), lbm::LBM< T >::treatStaircase(), and lbm::LBM< T >::treatVelocity().

const RealType lbm::eyn[19]

Initial value:

= { 0        , 1        , 0        ,-1        , 0, 0, 0,

                           1/sqrt(2),-1/sqrt(2),-1/sqrt(2), 1/sqrt(2),

                           1/sqrt(2), 0        ,-1/sqrt(2), 0        ,

                           1/sqrt(2), 0        ,-1/sqrt(2), 0 }

Normalized lattice velocities in y-direction.

Definition at line 178 of file D3Q19.h.

Referenced by lbm::LBM< T >::moveSphere(), and lbm::LBM< T >::setup().

const int lbm::ez[19] = { 0, 0, 0, 0, 0, 1,-1, 0, 0, 0, 0, 1, 1, 1, 1,-1,-1,-1,-1 }

Lattice velocities in z-direction.

Definition at line 150 of file D3Q19.h.

Referenced by lbm::LBM< T >::collideStream(), lbm::LBM< T >::collideStreamSmagorinsky(), lbm::LBM< T >::moveSphere(), lbm::LBM< T >::setup(), lbm::LBM< T >::setupBoundary(), lbm::LBM< T >::treatCurved(), lbm::LBM< T >::treatNoslip(), lbm::LBM< T >::treatOutflow(), lbm::LBM< T >::treatPressure(), lbm::LBM< T >::treatStaircase(), and lbm::LBM< T >::treatVelocity().

const RealType lbm::ezn[19]

Initial value:

= { 0        , 0        , 0        , 0        , 0, 1,-1,

                           0        , 0        , 0        , 0        ,

                           1/sqrt(2), 1/sqrt(2), 1/sqrt(2), 1/sqrt(2),

                          -1/sqrt(2),-1/sqrt(2),-1/sqrt(2),-1/sqrt(2) }

Normalized lattice velocities in z-direction.

Definition at line 189 of file D3Q19.h.

Referenced by lbm::LBM< T >::moveSphere(), and lbm::LBM< T >::setup().

const Direction lbm::fd[19]

Initial value:

= {
  C,
  N,
  E,
  S,
  W,
  T,
  B,
  NE,
  SE,
  SW,
  NW,
  TN,
  TE,
  TS,
  TW,
  BN,
  BE,
  BS,
  BW
}

Corresponding Direction value for numeric directions 0 - 18.

Definition at line 68 of file D3Q19.h.

const Direction lbm::fdinv[19]

Initial value:

= {
    C,
    S,
    W,
    N,
    E,
    B,
    T,
    SW,
    NW,
    NE,
    BS,
    BW,
    BN,
    BE,
    TS,
    TW,
    TN,
    TE
}

Inverse Direction values for numeric directions 0 - 18.

Definition at line 92 of file D3Q19.h.

const int lbm::finv[19]

Initial value:

= {
    0,  
    3,  
    4,  
    1,  
    2,  
    6,  
    5,  
    9,  
    10, 
    7,  
    8,  
    17, 
    18, 
    15, 
    16, 
    13, 
    14, 
    11, 
    12  
}

Inverse lattice directions corresponding to numeric directions 0 - 18.

Definition at line 44 of file D3Q19.h.

Referenced by lbm::LBM< T >::moveSphere(), lbm::LBM< T >::treatCurved(), lbm::LBM< T >::treatNoslip(), lbm::LBM< T >::treatPressure(), lbm::LBM< T >::treatStaircase(), and lbm::LBM< T >::treatVelocity().

const RealType lbm::le[19]

Initial value:

= { 1.     , 1.     , 1.     , 1.     , 1., 1., 1.,

                          sqrt(2), sqrt(2), sqrt(2), sqrt(2),

                          sqrt(2), sqrt(2), sqrt(2), sqrt(2),

                          sqrt(2), sqrt(2), sqrt(2), sqrt(2) }

Lengths of the lattice links.

Definition at line 199 of file D3Q19.h.

Referenced by lbm::LBM< T >::moveSphere(), and lbm::LBM< T >::setup().

const double lbm::w[19]

Initial value:

= {
    1. / 3.,
    1. / 18.,
    1. / 18.,
    1. / 18.,
    1. / 18.,
    1. / 18.,
    1. / 18.,
    1. / 36.,
    1. / 36.,
    1. / 36.,
    1. / 36.,
    1. / 36.,
    1. / 36.,
    1. / 36.,
    1. / 36.,
    1. / 36.,
    1. / 36.,
    1. / 36.,
    1. / 36.
}

Weights of the distribution values for the collision step.

Definition at line 115 of file D3Q19.h.

Referenced by lbm::LBM< T >::collideStream(), particles::ParticleSystem::generateBlackBodyColorTable(), lbm::LBM< T >::moveSphere(), lbm::LBM< T >::setup(), lbm::LBM< T >::treatPressure(), and lbm::LBM< T >::treatVelocity().