Encyclopaedia Index

SLIDE

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SLI[DE]
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SLIDE

----- PIL logical ; default=F; group 6 --- -

SLIDE.... when set T signals MAGIC(L) to slide the east edge boundary coordinates to equal their nearest internal neighbour. This option should be used only when the east boundary is a surface of constant XC. When it is, the effect is equivalent to

YC(NX+1,J,K)=YC(NX,J,K)
ZC(NX+1,J,K)=ZC(NX,J,K)

where J and K are indices that run over the currently-active DOMAIN.

SLIDE may be used only in conjunction with FIXDOM to slide the points on a specified sub-domain of the east boundary.


SLIDH

----- PIL logical ; default=F; group 6 --- -

SLIDH.... when set T signals MAGIC(L) to slide the high edge boundary coordinates to equal their nearest internal neighbour. This option should be used only when the high boundary is a surface of constant ZC. When it is, the effect is equivalent to

XC(I,J,NZ+1)=XC(I,J,NZ)
YC(I,J,NZ+1)=YC(I,J,NZ)

where I and J are indices that run over the currently-active DOMAIN.

SLIDH may be used only in conjunction with FIXDOM to slide the points on a specified sub-domain of the high boundary.


SLIDING GRID feature

See Section 3.7.2 of PHENC entry Multi-Block Grids and Fine-Grid Embedding for the CCM implementation. CCM multi-block grids are restricted to 'natural' links only but support one-to-many links and IPSA.

See Section 4 of PHENC entry GENERAL COLOCATED VELOCITY METHOD (GCV) for the GCV implementation. GCV multi-block grids support unstructured links between blocks, and the GCV solver is very tolerant of skewed grids. The links are always one-to-one, and IPSA is not supported.

An alternatives to the BFC sliding grid may be the polar-grid ROTOR object, which allows parts of a cylindrical-polar grid to rotate about the Z axis relative to the rest of the grid.


SLIDL

----- PIL logical ; default=F; group 6 --- -

SLIDL.... when set T signals MAGIC(L) to slide the low edge boundary coordinates to equal their nearest internal neighbour. This option should be used only when the low boundary is a surface of constant ZC. When it is, the effect is equivalent to

XC(I,J,1)=XC(I,J,2)
YC(I,J,1)=YC(I,J,2)

where I and J are indices that run over the currently-active DOMAIN.

SLIDH may be used only in conjunction with FIXDOM to slide the points on a specified sub-domain of the low boundary.


SLIDN

----- PIL logical ; default=F; group 6 --- -

SLIDN.... when set T signals MAGIC(L) to slide the north edge boundary coordinates to equal their nearest internal neighbour. This option should be used only when the north boundary is a surface of constant YC. When it is, the effect is equivalent to

XC(I,NY+1,K)=XC(I,NY,K)
ZC(I,NY+1,K)=ZC(I,NY,K)

where I and K are indices that run over the currently-active DOMAIN.

SLIDN may be used only in conjunction with FIXDOM to slide the points on a specified sub-domain of the north boundary.


SLIDS

----- PIL logical ; default=F; group 6 --- -

SLIDS.... when set T signals MAGIC(L) to slide the south edge boundary coordinates to equal their nearest internal neighbour. This option should be used only when the south boundary is a surface of constant YC. When it is, the effect is equivalent to

XC(I,1,K)=XC(I,2,K)
ZC(I,1,K)=ZC(I,2,K)

where I and K are indices that run over the currently-active DOMAIN.

SLIDS may be used only in conjunction with FIXDOM to slide the points on a specified sub-domain of the south boundary.


SLIDW

----- PIL logical ; default=F; group 6 --- -

SLIDW.... when set T signals MAGIC(L) to slide the west edge boundary coordinates to equal their nearest internal neighbour. This option should be used onlywhen the west boundary is a surface of constant XC. When it is, the effect is equivalent to

YC(1,J,K)=YC(2,J,K)
ZC(1,J,K)=ZC(2,J,K)

where J and K are indices that run over the currently-active DOMAIN.

SLIDW may be used only in conjunction with FIXDOM to slide the points on a specified sub-domain of the west boundary.


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