Summary
As with configurationfactor, the effective radiation area of a pig is necessary for the estimation of radiation exchange rate between the pig body and surrounding objects. The effective radiation areas of polyhedric surface-model pigs, which were 27, 65 and 88 kg in live weight, in a standing posture and represented by the three-demensional coordinates of many triagular patches, were numerically calculated by the computer graphics technique and the law of solid-angle projection.HomePage
The effective radiation areas of 27, 65 and 88 kg surface-model pigs were 0.748, 1.24 and 1.72 m2 respectively. The ratios of the effective radiation area to the total pig surface area were respectively 0.93, 0.94 and 0.94. The ratios appeared to be almost constant and independent of the physical dimension of surface-model pigs.Keywords: pig, surface-model, computer graphics, law of solid-angle projection, effective radiation area