摘要
应用颗粒随机轨道模型,并与一种新的代数Reynolds应力模型相结合,对新型煤粉涡旋燃烧炉内强旋湍流气。固两相流动进行了数值模拟。得到了与实验相符合的颗粒相密度分布和质量流分布。计算结果表明,在涡旋燃烧炉内的强旋湍流流场中,外壁附近颗粒浓度最高,颗粒停留时间加长,气-固两相间滑移速度增大。
The particle stocliastic trajectory model, integrating with a new version algebraic Reynolds stress model, was employed to numerically simulate the strongly swirling gas-particle turbulent flow in a iiovel vortex combustor(VC).The calculated distributions of theparticle density and tangential mass fiux agree with the measured test data。The simulationresults elucidate the following features of the VC gas-particle flow:peak values of the particle density occurring near the combustor outer wall,prolonged particle residence time, and large gas- particle slip velocity
出处
《力学学报》
EI
CSCD
北大核心
1994年第6期657-663,共7页
Chinese Journal of Theoretical and Applied Mechanics
关键词
两相流
强旋湍流流动
数值模拟
流体力学
燃烧
gas-particle flow, strongly swirling turbulent flow, particle stochzestic trajectory model, numerical simulation