3D Connexion Version 6.6

*RADIATION VIEWFACTOR

SYMMETRY

Include this parameter to indicate the existence of radiation symm etries in the model. This

parameter must be set equal to the name appearing in the *RADIATION SYMMETRY option

where the symmetries are deﬁned. If this parameter is omitted, it is assumed that there are no

radiation symmetries in the cavity.

VTOL

Setthis parameter equal to the acceptable tolerance for the viewfactor calculations. If this parameter

is omitted, the default viewfactor tolerance is0.05.

Optional parameters (for use with the *MOTION option):

MDISP

Set this parameter equal to the maximum allowable moti ono fa ny node in the monitored node set

before recalculation of radiationviewfactors. Thisparameter is relevant only when the *MOTION

option appears in conjunction with the *RADIATIONVIEWFACTOR option. This parameter must

be used with the NSET parameter.

NSET

Set this parameter equal to the name of the node set whosedisplacements are to be monitored to

decide when geometrical changes are signiﬁcant enough to trigger recalculation of the radiation

viewfactors duringthe step. Thisparameter is relevant only when the *MOTION option appears in

conjunction withthe *RA DIATIONVIEWFACTOR option. This para meter must be used with the

MDISP parameter.

Data lines to deﬁne blocking surfaces (BLOCKING=PARTIAL):

First line:

1. Listof surfaces that provide blocking inside the cavity, up to eight surfaces per line.

Repeat this data line as often as necessary to deﬁne partial blocking.

There are no data lines associated with this option if BLOCKING=PARTIALis not speciﬁed.

17.6–2

ABAQUS Version 6.1 Module: ID:

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