Table of Contents
RAYON
Description
Radiative exchange between walls or between wall and environment.
Used with 3 node CONRA elements.
Type: 112
Implemented by: M. Bourdouxhe, 1987
Files
Prepro: RAYONA.F
Lagamine: RAYONB.F
Input file
| TITLE (A5) | |
|---|---|
| TITLE | “RAYON” in the first 5 columns |
| Control data (I5) | |
| NELEM | Number of elements |
| Definition of the elements (3I5/6I5) | |
| NINTE | Number of integration points from 1 to 10 |
| LMATE | Material |
| INDIC | Connction type = 0 → exchange between 2 faces belonging to the same structure (CONRA element) = 1 → Radiation towards a fictive surface (leak flow or symmetry) = 2 → Radiation between a face representing the symmetry and a face representing a leak flow |
| NODES(6) | Definition of the nodes |
Examples for INDIC
| INDIC | Examples | Figure |
|---|---|---|
| 0 | Example 1: 4 8 Link between 2 faces of the structure |  |
| 1 | Example 2: 10 16 14 9 - Description of the leak flow towards the fictive face Example 3: 10 15 1 14 - Description of the symmetry flow towards the fictive face |  |
| 2 | Example 4: 15 16 1 14 14 9 - Link between the leak flow and the symmetry flow |
Results
- Sigma(1): flow unaffected by the viewing factor
- Sigma(2): flow affected by the viewing factor and the area of the element ($A_1 F_{12}=A_2 F_{21}$)
Remarks
- CONRA: Structure to the left in relation to the numbering direction
- RAYON: Face describing the symmetry and the leak flow to the right in relation to the numbering direction
