BOUNDARY CONDITIONS IN CCV

A list of the sample PATCH and COVAL statements which activate the number of conditions extracted from the existing GXCCVG collection are shown below.

(i) Laminar zero- slip wall conditions (BFC=F)

They are activated by following standart statements:

WALL (SOUTH,SOUTH,1,NX,1,1,1,NZ,1,1)
COVAL(SOUTH,UC1,1.0/PRNDTL(UC1),UC1WALL)
COVAL(SOUTH,WC1,1.0/PRNDTL(WC1),WC1WALL)

(ii) Laminar zero- slip non- moving wall conditions (BFC=T)

WALL (SOUTH,SOUTH,1,NX,1,1,1,NZ,1,1)
COVAL(SOUTH,UC1,1.0/PRNDTL(UC1),GRND)
COVAL(SOUTH,VC1,1.0/PRNDTL(VC1),GRND)
COVAL(SOUTH,WC1,1.0/PRNDTL(WC1),GRND)

moving wall:

UC1E=UC1 of east wall	VC1E=VC1 of east wall	WC1E=WC1 of east wall
UC1W=UC1 of west wall	VC1W=VC1 of west wall	WC1W=WC1 of west wall
UC1N=UC1 of north wall	VC1N=VC1 of north wall	WC1N=WC1 of north wall
UC1S=UC1 of south wall	VC1S=VC1 of south wall	WC1S=WC1 of south wall
UC1H=UC1 of high wall	VC1H=VC1 of high wall	WC1H=WC1 of high wall
UC1L=UC1 of low wall	VC1L=VC1 of low wall	WC1L=WC1 of low wall

(iii) Turbulent zero- slip wall conditions (BFC=F)

They are activated by following standart statements:

WALL (SOUTH,SOUTH,1,NX,1,1,1,NZ,1,1)
COVAL(SOUTH,UC1,GRND2,UC1WALL)
COVAL(SOUTH,WC1,GRND2,WC1WALL)

(iv) Turbulent zero- slip non- moving wall conditions (BFC=T)

WALL (SOUTH,SOUTH,1,NX,1,1,1,NZ,1,1)
COVAL(SOUTH,UC1,GRND,GRND)
COVAL(SOUTH,VC1,GRND,GRND)
COVAL(SOUTH,WC1,GRND,GRND)

moving wall:

UC1E=UC1 of east wall	VC1E=VC1 of east wall	WC1E=WC1 of east wall
UC1W=UC1 of west wall	VC1W=VC1 of west wall	WC1W=WC1 of west wall
UC1N=UC1 of north wall	VC1N=VC1 of north wall	WC1N=WC1 of north wall
UC1S=UC1 of south wall	VC1S=VC1 of south wall	WC1S=WC1 of south wall
UC1H=UC1 of high wall	VC1H=VC1 of high wall	WC1H=WC1 of high wall
UC1L=UC1 of low wall	VC1L=VC1 of low wall	WC1L=WC1 of low wall

(v) Rate of the turbulent energy production (BFC=T)

No special statements are needed. When CCV=T the subroutine GENBGR is called from GXCCVG to re-write the rate of turbulent energy production, see Section 6.2

(vi) Buyoancy forces

PATCH(BUOY,PHASEM,1,1,1,NY,1,NZ,1,1)
COVAL(BUOY,WC1,FIXFLU,GRND3)

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