摘要
根据烟气流运动方程与双方程模型,计算出烟羽流场,再根据流速分布图确定烟羽的抬升高度。本文在常温条件下对烟气抬升高度随风速、烟气出口速度等影响因素的变化规律进行了系统的研究,对现有的几个主要抬升公式进行了评价和比较。所编制的计算程序,可直接用于各种条件下烟羽抬升高度的计算和预报,指导烟囱设计和进行环境质量综合评价。
This paper presents a numerical technique for calculating the flow field ofchimney-stack tail fluid. A fully three-dimensional solution of the N-Sequation,incorporated with K-ε turbulence model has been used. The computationalmethod used is the SIMPLE method which is a finite and different volume methodbased on the principle of pressure correction. The variation of chimney plumerising height with wind velocity and jet velocity at atmospheric temperature hasbeen studied systematically. This program can be used directly in calculation of chimney plume heightin various conditions, and can be used to guide chimney-stack designing andconduct environmental quality assessing.
关键词
烟囱
烟羽
高度
数值计算
计算机
chimney-stack
chimney plume rising height
numerical calculation
