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the fluctuation spectrum random trajectory model
相关语句
  脉动频谱随机轨迹模型
     The fluctuation spectrum random trajectory model of the particle motion in shear turbulent flow is developed using Lagrangian method, in which the velocity fluctuation of the fluid is determined by Fourier expansion and fluctuation spectrum. The comparing analyses of the modeled results with the measured results have shown that the model developed in this paper can describe well the motions of the particles in shear turbulent flow.
     本文利用Lagrangian方法建立了剪切紊流中颗粒运动的脉动频谱随机轨迹模型,其中流体脉动速度采用Fourier级数和湍流脉动能谱来确定.数值计算结果与实验结果的对比分析表明,该模型能够很好地描述颗粒在剪切流中的运动.
短句来源
  “the fluctuation spectrum random trajectory model”译为未确定词的双语例句
     In the same time the K e two equation model and the fluctuation spectrum random trajectory model(FSRT model) are used to stimulate the flow and heat transfer of gas phase and solid phase respectively.
     同时也利用二维K-ε模型模拟气流场以及FSRT模型模拟颗粒运动轨迹,建立气固多相流横掠光滑圆管传热模型。
短句来源
  相似匹配句对
     TEMPERATURE FLUCTUATION IN CRYOSTAT
     低温恒温控制中的温度波动
短句来源
     Generalized Ensemble and Fluctuation
     广义系综与涨落
短句来源
     On The Fluctuation-Dissipation Theorem
     涨落耗散定理概述
短句来源
     The energy fluctuation of A.
     不同时期内能量在各器官中的分配比率也存在差异。
短句来源
     Measurement of the Random Phase Fluctuation
     随机相位抖动测量
短句来源
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A numerical treatment for determining the particle velocity and trajectory in a two-phase flows (the Fluctuation-Spectrum-Random-Trajectory Model ) is described herein and this model is proposed to account for the turbulent diffusion of the particles. It is tested for the flow of a turbulent axisymmetric gaseous jet ladn with spherical solid particles of non-uniform size and the predictions are compared with the data of Levy et al. The predictions of both phase velocity...

A numerical treatment for determining the particle velocity and trajectory in a two-phase flows (the Fluctuation-Spectrum-Random-Trajectory Model ) is described herein and this model is proposed to account for the turbulent diffusion of the particles. It is tested for the flow of a turbulent axisymmetric gaseous jet ladn with spherical solid particles of non-uniform size and the predictions are compared with the data of Levy et al. The predictions of both phase velocity and gas-phase flucfuation velocity and experimental data is good agreement.

本文运用脉动频谱随机轨迹模型《FSRT模型》对颗粒尺寸非均匀分布的气—固多相射流进行了数值计算。气相场和颗粒相的速度分布及浓度分布的计算结果和实验数据的吻合程度是令人满意的。

In this paper,numerical solutions for gas-particle multiphase co-axial jets with the Fluctuation-Spectrum-Random-Trajectory model,by taking into consi- deration thoroughly the effect of different particle sizes on turbulent diffusion, is presented.The particle velocity and concentration field were obtained by a volume-average method.Also,we set up a gas-particle multiphase flow experimental set to test and verify the model.The gas-particle coaxial jet was examined by the LDM...

In this paper,numerical solutions for gas-particle multiphase co-axial jets with the Fluctuation-Spectrum-Random-Trajectory model,by taking into consi- deration thoroughly the effect of different particle sizes on turbulent diffusion, is presented.The particle velocity and concentration field were obtained by a volume-average method.Also,we set up a gas-particle multiphase flow experimental set to test and verify the model.The gas-particle coaxial jet was examined by the LDM and the color-changeable high speed stroboscopic photographic system.The computation results appeared to correlate well with the experimental data.

本文提出了一个新的气-固多相湍流运动的模型(脉动频谱随机颗粒轨道模型),它计及了湍流涡团对颗粒扩散作用,并通过体平均方法求出颗粒的速度场和浓度场。同时建立了气-固多相射流试验台,采用激光衍射仪、高速变色频闪摄影法等对气-固多相同轴射流进行了实验研究。实验和上述模型模拟的结果吻合较好。

A numerical model for turbulent fluctuation and diffusion of gas-particle flows is presented. This procedure treats the thrbulent gas flow field by using the k- equations, and models the turbulent fluctuation velocity of gas flow as a random Fourier series based on the fluctuation frequency and spectrum. The kinematic properties of particles are described by the Lagrange approach. Hence the model could be known as the Fluctuation-Spectrum-Random-Trajectory...

A numerical model for turbulent fluctuation and diffusion of gas-particle flows is presented. This procedure treats the thrbulent gas flow field by using the k- equations, and models the turbulent fluctuation velocity of gas flow as a random Fourier series based on the fluctuation frequency and spectrum. The kinematic properties of particles are described by the Lagrange approach. Hence the model could be known as the Fluctuation-Spectrum-Random-Trajectory model. Some examples on the two-phase turbulent laden jets and particle movements in the fluidzed beds are illustrated as applications of the model.

本文提出了气固两相流动的湍流扩散数学模型。本模型用k-ε双方程模型求解气相湍流场,并根据气流湍流脉动的频谱、能谱曲线提出了随机富氏级数来模拟气相脉动速度,用拉氏方法描述颗粒的运动,故称为脉动频谱随机颗粒轨道模型。本文还给出了本模型在气固多相射流和流化床内应用的实例。

 
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