入流条件对同轴射流旋流燃烧室内湍流流动模拟的影响

应用一种新的代数Reynolds应力模型对同轴射流旋流燃烧室内两股射流为同向旋转和反向旋转条件下的湍流旋流流动进行了数值模拟。为得到合理的流场分布结果，研究了入流条件对同轴射流旋流燃烧室内湍流流动模拟结果的影响。计算中对旋流燃烧室进口处两股旋转射流的轴向与切向速度采用了均匀分布和实验测量分布两种方式来给定。将两种进口速度分布条件下得到的燃烧室内气体轴向与切向速度分布计算结果与实验数据进行了比较。

Effect of Inlet Conditions on the Simulation of Turbulent Flows in a Swirl Combustor with Coaxial Jets

A new algebraic Reynolds stress model is employed to simulate numerically the turbulent flows in a swirl combustor with coaxial jets for the coswirl and counterswirl cases.For the purpose of properly simulating the coaxial swirling turbulent flows in the combustor,the effect of the inlet conditions on the simulation results is investigated.Two types of inlet conditions for the gas axial and tangential velocity,i.e.,the presumed uniform distributions and the measured distributions,are adopted in the present simulations.The calculated gas axial and tangential velocities under these two types of inlet conditions are compared with the measured test data.