Card 9 - CYCLIC_SYMMETRY Definition

This optional card defines cyclic symmetry rotational periodicity that is created between source and target groups.

Parameters: KODE, N1, T1, T2, T3, T4

KODE

KODE is the code CYCLIC_SYMMETRY (or 127)

N1

N1 is the CYCLIC_SYMMETRY card ID. Cards with the same ID reference the same cyclic symmetry definition.

T1 = NAME

T1 = NAME (or 1) indicates the name for the cyclic symmetry boundary condition that is specified in T2.

T1 = SELECTION_SOURCE

T1 = SELECTION_SOURCE (or 2) specifies a selection of cyclic source elements. The selection is represented by the group name in T2.

T1 = SELECTION_TARGET

T1 = SELECTION_TARGET (or 3) specifies a selection of cyclic target elements. The selection is represented by the group name in T2.

T1 = SELECTION_SOLID

T1 = SELECTION_SOLID (or 10) specifies a selection of cyclic solid polygon body. The selection is represented by the group name in T2.

If SELECTION_SOLID is specified then material properties, such as heat capacity and thermal conductivity, are multiplied by the number of instances specified in INSTANCES.

T1 = SELECTION_FLUID

T1 = SELECTION_FLUID (or 12) specifies a selection of cyclic fluid polygon body. The selection is represented by the group name in T2.

If SELECTION_FLUID is specified then material properties, such as heat capacity and thermal conductivity, are multiplied by the number of instances specified in INSTANCES.

T1 = SELECTION_COAT

T1 = SELECTION_COAT (or 11) specifies a selection of the shell elements on the top of the polygon body. The selection is represented by the group name T2.

If SELECTION_COAT is specified then all convective areas that are specified by the SELECTION_COAT group are multiplied by number of instances specified in INSTANCES.

T1 = RADIATION

T1 = RADIATION (or 4) specifies a group of elements that contain defined thermo-optical properties that extended in space about the axis of rotation, specified in AXIS by the number of instances specified in INSTANCES.

T1 = AXIS

T1 = AXIS (or 5) is the axis of rotation. T2 may be an integer that represents the ID of a referenced Card 9 VECTOR card, or GLOBAL referencing Card 9 GLOBAL_AXIS card.

T1 = INSTANCES

T1 = INSTANCES (or 6) specifies the number of instances in T2. It represents the number of times the geometry is duplicated around the axis of rotation.

T1 = RESOLUTION

T1 = RESOLUTION (or 9) specifies the coupling resolution option in T2, in which T2 may be ONETOONE, COARSE, MEDIUM, FINE, VERYFINE, or FINEST.

T1 = OVERLAP

T1 = OVERLAP (or 7) connects only overlapping elements between the source and target element selections which is activated in T2. The T2 may be ON or OFF.

T1 = OVER_DIR

T1 = OVER_DIR (or 8) specifies the overlap projection in T2 if the connect only overlapping elements is ON.

  • T2 = PRIMARY the direction of the overlap is along the normal of source elements.
  • T2 = SECONDARY the direction of the overlap is along the normal of target elements..

Code example

CYCLIC_SYMMETRY 1 NAME Cyclic Symmetry-stage1
CYCLIC_SYMMETRY 1 SELECTION_SOURCE Cyclic_
CYCLIC_SYMMETRY 1 SELECTION_TARGET CyclicS
CYCLIC_SYMMETRY 1 SELECTION_SOLID Cyclicy
CYCLIC_SYMMETRY 1 SELECTION_COAT Cyclicm
CYCLIC_SYMMETRY 1 RADIATION
CYCLIC_SYMMETRY 1 AXIS 2
CYCLIC_SYMMETRY 1 INSTANCES 72
CYCLIC_SYMMETRY 1 RESOLUTION MEDIUM
CYCLIC_SYMMETRY 1 OVERLAP ON
CYCLIC_SYMMETRY 1 OVER_DIR SECONDARY