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Author
Walton, G. N.
Title
Calculation of Obstructed View Factors by Adaptive Integration.
Coporate
National Institute of Standards and Technology, Gaithersburg, MD
Report
NISTIR 6925, November 2002, 22 p.
Distribution
AVAILABLE FROM: National Technical Information Service (NTIS), Technology Administration, U.S. Department of Commerce, Springfield, VA 22161. Telephone: 1-800-553-6847 or 703-605-6000; Fax: 703-605-6900; Rush Service (Telephone Orders Only) 800-553-6847; Website: http://www.ntis.gov
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.