摘要
为研究不同精度的离散格式对湍流旋流流动数值模拟结果的影响,同时应用QUICK格式和混合格式对同轴射流旋流燃烧室内的湍流流动进行了数值模拟.在采用k ε湍流模型的条件下,QUICK格式计算得到的燃烧室内气体轴向与切向速度及轴向脉动速度均方根值分布与实验数据符合较好,而混合格式给出的数值模拟结果则与实验有一定的偏差.
To explore the effect of discretization scheme on the simulation results, both the QUICK scheme and the hybrid scheme are applied to the numerical simulation of turbulent flow in a swirl combustor with coaxial jets. The computation adopts the κ-Ε model for the closure of turbulence . It is seen that the gas axial and tangential velocities and the root mean square of gas axial fluctuating velocity calculated by utilizing the QUICK scheme agree well with the measured test data, while the calculated results by using the hybrid scheme show obvious deviations from the measurement.
出处
《计算物理》
EI
CSCD
北大核心
2004年第4期283-289,共7页
Chinese Journal of Computational Physics
基金
国家自然科学基金(50176026)资助项目.
关键词
旋流燃烧室
数值模拟
湍流旋流流动
离散格式
Calculations
Combustors
Computer simulation
Jets
Swirling flow
Velocity
