ABAQUS Keywords Reference Manual  

*REFLECTION
Define reflection symmetries for a cavity radiation heat transfer analysis.

This option is used to define a cavity symmetry by reflection through a line or a plane. It can be used only following the *RADIATION SYMMETRY option.

Product: ABAQUS/Standard  

Type: History data

Level: Step  

References:

Required parameter:

TYPE

Set TYPE=LINE to create a cavity composed of the cavity surface defined in the model and its reflection through a line. See Figure 17.12–1. This option can be used only for two-dimensional cases.

Set TYPE=PLANE to create a cavity composed of the cavity surface defined in the model and its reflection through a plane. See Figure 17.12–2. This option can be used only for three-dimensional cases.

Set TYPE=ZCONST to create a cavity composed by the cavity surface defined in the model and its reflection through a line of constant z-coordinate. See Figure 17.12–3. This option can be used only for axisymmetric cases.

Data line to define reflection of a two-dimensional cavity (TYPE=LINE): 

First (and only) line:

  1. X-coordinate of point a (see Figure 17.12–1).

  2. Y-coordinate of point a.

  3. X-coordinate of point b.

  4. Y-coordinate of point b.

Data lines to define reflection of a three-dimensional cavity (TYPE=PLANE): 

First line:

  1. X-coordinate of point a (see Figure 17.12–2).

  2. Y-coordinate of point a.

  3. Z-coordinate of point a.

  4. X-coordinate of point b.

  5. Y-coordinate of point b.

  6. Z-coordinate of point b.

Second line:

  1. X-coordinate of point c.

  2. Y-coordinate of point c.

  3. Z-coordinate of point c.

Data line to define reflection of an axisymmetric cavity (TYPE=ZCONST): 

First (and only) line:

  1. z-coordinate of symmetry line (see Figure 17.12–3).

Figure 17.12–1 *REFLECTION, TYPE=LINE option.

Figure 17.12–2 *REFLECTION, TYPE=PLANE option.

Figure 17.12–3 *REFLECTION, TYPE=ZCONST option.