Simulation of Swirling Turbulent Flow and Combustion in a Combustor

被引：18
|
作者：
Zhang, Jian [1 ]
Zhu, Chengkai [1 ]
机构：
[1] Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China
来源：
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS | 2009年 / 55卷 / 05期
基金：
中国国家自然科学基金;
关键词：
LARGE-EDDY SIMULATION; DIFFUSION FLAME; VELOCITY; MODEL;
D O I：
10.1080/10407780902776470
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An algebraic concentration moment (ACM)-PDF turbulent combustion model is proposed. It is formulated by jointly utilizing the explicit algebraic expressions for the second-order-moment of concentration fluctuation and the presumed probability density function (PDF) of gas instantaneous temperature. A set of analytical expressions for the time-averaged temperature relevant quantity is obtained for the closure of the time-averaged reaction rate. The model is applied to the simulation of turbulent flow and combustion in a swirl combustor. The calculated gas velocity, temperature, species concentrations, and turbulent fluctuating velocity are in agreement with the measured data. They are much improved over those obtained by the EBU-Arrhenius model.
引用
收藏
页码：448 / 464
页数：17
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