摘要
针对气固圆湍射流流动采用基于双向耦合的大涡模拟方法进行了模拟,研究了直径为105μm的颗粒的存在对圆湍射流的影响。单相流动的预报结果在射流形态以及时均速度和湍流强度等统计结果方面均与实验结果符合良好。两相流动的时均速度和湍流强度等统计结果与实验结果符合较好,与单相流动的模拟结果相比,105μm的颗粒加入流场后,由于其较快的响应特征起到了阻尼作用,从而降低了气相场的湍流强度。
Two-way coupled large eddy simulations （LES） were used to study the influence of dispersed particles on the gas-phase jet in gas-particle turbulent round jet flows. The single-phase jet shape and statistical properties including the streamwise velocity and turbulent intensity from the simulation agree well with experimental results for single-phase and gas-particle flows. The LES results for the two-phase jet flow show that 105μm diameter particles act as a damp in the flow which suppresses the turbulence intensity.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第2期240-243,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(50576046)
关键词
圆湍射流流动
大涡模拟
双向耦合
颗粒
turbulent round jet
large eddy simulation
two-waycoupling
particle
