方型多火嘴石油化工管式炉中辐射室三维流动及传热的数学模拟

提出方型石油化工管式炉中辐射室的三维流动和传热的数学模型.对某焦化炉计算的结果与实测数据进行了初步比较并作出讨论.

MATHEMATICAL SIMULATION OF FLUID FLOW ANDHEAT TRANSFER IN CUBOID RADIATION SECTIONOF PETRO-CHEMICAL TUBE HEATER

A three-dimensional mathematical model has been developed for predicting the transport of mass, energy and momentum in the combustion chamber of a rectangular multi-burner. The turbulence two-equation model and Monte-Carlo method ard used for simulating the turbulence flow and radiative heat transfer, and a combustion model of turbulent diffusion flame is considered. The governing differential equations which are composed of velocity, mixture fraction, fuel concentration, stagnant enthalpy, turbulent kinetic energy and turbulent energy dissipation are solved by tri-diagonal matrix algorithm. The distributions of the temperature of fuel gas and the heat flux of wall are predicted in a coking furnace. A comparison between the calculated and measured results shows that the prediction is successful.