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- Abstract: Large eddy simulations (LES) were used to explore the streamwise vortexes distribution and their function in rectangular jet flows. 文章摘要: 为研究矩形射流中的流向涡形态及其作用,对矩形射流流动过程进行了三维大涡模拟。
- Keywords computational fluid dynamics(CFD);large eddy simulation(LES);flow characteristics;stirred tank;Rushton impeller; 计算流体力学(CFD);大涡模拟(LES);流动特性;搅拌槽;涡轮桨;
- The two-phase compressible free shear-layer with particles was calculated by the method of large eddy simulation(LES). 采用大涡模拟(LES)方法数值仿真了可压缩流自由剪切层内颗粒两相流流场结构。
- This pap er use a Large Eddy Simulation (LES) for predicting indoor air distribution and a HSMAC method for ensurin. 本文采用大涡模拟(LES)法求解室内气流分布,使用HSMAC法保证计算的稳定性和收敛性。
- The numerical simulation for a three-dimensional curved duct flow was carried out by means of the large eddy simulation (LES). 本文应用湍流大涡模拟方法对三维空间的弯管流进行了数值模拟。
- Smoke movement and temperature field in an open vertical enc lo sure are studied using large eddy simulation (LES) method. 使用大涡模拟方法研究了不同壁面温度条件下,竖井结构中,竖直壁面间的火灾热烟气和空气运动规律及温度场分布。 并讨论了造成分布差异的原因。
- Moreover, as a kind of turbulent model, Large Eddy Simulation (LES) can capture the transient flow information of every phase, which has attracted more attention. 特别是近几年发展起来的大涡模拟模型(Large Eddy Simulation, LES),由于可以捕捉到流场内各相很强的瞬态运动信息而倍受关注。
- Brandt, T., “A Posteriori Study on Modeling and Numerical Error in LES Applying the Smagorinsky Model,” Complex Effects in Large Eddy Simulation Limassol, Sep. 2005. 孙明忠,“风力发电机叶片快速设计程序与软体设计”,长庚大学机械工程研究所硕士论文,2005年。
- The two-phase compressible mixing layer with droplets was calculated by large eddy simulation (LES) for studying the mixing law of supersonic two-phase flow. 摘要为研究超声速两相流混合机理,采用大涡模拟(LES)方法数值仿真了超声速混合层内液滴两相流流场结构。
- In the turbulent calculation, the large eddy simulation (LES) was introduced and the eddy break-up (EBU) model was adopted to compute the chemical reaction rate. 计算湍流时采用大涡模拟(LES),化学反应速率采用EBU漩涡破碎模型。
- A high accurate finite volume method of non-uniform meshes for large eddy simulation(LES) is presented in order to precisely predict complex incompressible turbulent flows. 为准确预测不可压复杂边界的湍流流动,本文应用高精度有限体积法对曲面边界湍流进行了大涡模拟。
- Based on the traditional large eddy simulation (LES) approach,explicit filtering was introduced,which effectively controlled the numerical errors in the smallest resolved scales. 在传统大涡模拟方法的基础上引入显式滤波技术,有效地控制了最小解析尺度区域的各种数值误差。
- Smoke movement during fire in a mall without venting was simulated by large eddy simulation (LES) model. 用大涡模拟计算了一个没有通风的室内商业街火灾的烟气流动。
- Using the large eddy simulation (LES) and finite difference scheme, three-dimension simulation of the velocity field around a square cylinder at a Reynolds number of 22,000 is conducted. 采用有限差分法;对雷诺数为2.;2×10~4的方柱绕流进行了大涡模拟(简称LES)。
- The transient density of turbulent flows is calculated by applying large eddy simulation (LES), and the index of refraction for fluid of interceptor is given, which provides data for the study of optical performance of the seeker quantitatively. 利用大涡模拟得出湍流瞬态密度值 ,并根据Gladstone Dale关系计算出飞行器周围流场的折射率 ,从而为定量研究导弹导引头光学性能提供依据。
- The large eddy simulations (LES) with the Euler-Euler approach is used to study the gas-liquid flow in a partially aerated bubble column. 摘要采用气液两相流动的欧拉-欧拉大涡模拟,研究了偏心进气式鼓泡塔内气液两相湍流流动。
- LES model = large eddy simulation mode 大旋涡模拟模型
- Large Eddy Simulation of Thermally Induced Oscillations in the Convective Boundary Layer. 对流边界层中热力引入的振动的大尺度涡旋模拟。
- The weakly compressible fluid control equations and the large eddy simulation turbulence model are expounded. 摘要阐述了二维弱可压缩流体流动控制方程和大涡模拟湍流模型。
- As a numerical method of turbulence, large eddy simulation (LES) has many advantages of both direct numerical simulation and turbulent model simulation, especially when high Reynolds gas-particle turbulence being simulated. 大涡模拟作为近年来备受关注的湍流数值模拟方法,同时具有直接模拟和模型模拟的很多优点,在研究高Reynolds数气粒多相湍流流动中气相湍流拟序结构与颗粒的相互作用方面发挥了重要而独特的作用,已成为当今世界上流体力学工作者的热门研究主题。