Thermal radiation calculation of complex surface based on Triangulation and Gauss Integral Method

摘要

To solve the problem of thermal radiation in complex geometric scenes, a finite element method based on Delaunay triangulation and three-point Gauss integral is proposed. The calculated value is compared with model existing theoretical solution of view factor, and the results show that the errors are within 3%. The method is applied to calculate the thermal radiation of combustion between adjacent liquefied petroleum gas tanks. The geometric model of conical flame and adjacent spherical tanks is also established. The result shows the maximum heat flux received by adjacent spherical tanks is 11.3 kW/m(2) when the flame temperature is 1470 K without wind.