NIST Time|NIST Home|About NIST|Contact NIST

HomeAll Years:AuthorKeywordTitle2005-2010:AuthorKeywordTitle

Calculation of Obstructed View Factors by Adaptive Integration.


pdf icon Calculation of Obstructed View Factors by Adaptive Integration. (565 K)
Walton, G. N.

NISTIR 6925; 22 p. November 2002.

Available from:

Orders Only) 800-553-6847;
Website: http://www.ntis.gov
Order number: PB2003-101355

Keywords:

computers; algorithms; computer algorithm; shape factor; thermal radiation; view factor

Abstract:

This report describes the use of adaptive integration for the calculation of view factors between simple convex polygons with obstructions. The accuracy of the view factor calculation is controlled by a convergence factor. The adaptive integration method is compared with two other common methods implemented in a modern computer program and found to have significant advantages in accuracy and even advantages in computational speed in some cases.