【摘要】 本文介绍圆筒燃烧室内双股同心旋转射流物理模型实验与数值模拟的研究结果。数值模拟按著者最近提出的湍流涡量输运方程,采用ψ-ω方法及K-ε湍流双方程模型,Rodi提出的壁函数,以及Spalding教授等提出的计算湍流回流的方法。本文工作表明,用涡量—流函数法及K—ε双方程模型计算强旋流及回流是可行的。更多还原

【Abstract】 In this paper, the numerical simulation of the coaxial swirling jet f low field in a cylindrical combustion chamber is introduced.Two vane-type swirlers with vane angle of 45°and 60° respectively arэ used in the experiments for study.The axial, radial and tangential velocity components of the flow field are measured with a five-hole pressure probe.A modified turbulent vorticity transport equation recently drived by o ne of the authors is used in carrying out this numerical simulation the predictions of the flow field are obtained by using ω-φ method and the turbulence K-e two equatipns model.The present investigation suggests that the calculation method intro-ueed by the authors is easy to handle for numerical simulation of strong-swirling and recirculating flows, therefore, this method is adequate for engineering purposes.更多还原