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耗散方程
相关语句
  dissipation equation
    The momentum equation, energy equation, turbulent energy equation, dissipation equation are all in convection diffusion type. However, the continuity equation is not in convection diffusion type.
    流体力学的动量方程、能量方程、湍动能方程和耗散方程都具有对流扩散方程的形式,但连续方程却不是对流扩散型的。
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  “耗散方程”译为未确定词的双语例句
    In this model, the dissipation of the turbulent kinetic energy of gas bubbles is governed by the dissipation equations of the gas bubbles. The convection, diffusion, production and dissipation of the turbulent kinetic energy of bubbles, and the coupling interaction between the mass, momentum, and energy of two fluids are taken into account.
    在该模型中 ,气泡湍动能的耗散受其自身耗散方程的制约 ,并全面考虑了气泡湍动能本身的对流、扩散、生成和耗散以及与液体之间的耦合作用 .
短句来源
    The Reynolds Stress Model (RSM) for turbulence is described together with the kε model with and without the buoyancy term. This article describes the RSM of 11 Equation which was developed from RSM of 7 Equation for heated flows by solving additional transport equations for the turbulent heat fluxes and for the variance of the temperature fluctuations.
    对Reynolds应力模型(RSM)在数值模拟热分层流场方面进行了优化,即在Reynolds应力方程和湍动能耗散方程的基础上加入标量通量方程和温度扰动方程,使原来的7方程成为了11方程。
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  dissipation equation
The characteristic length scale of subgrid turbulence is no longer given by the spatial discretization step size, but by the use of a dissipation equation.
      
Fallacies include the mixing-length concept; the effect of pressure gradient on Reynolds shear stress; the separability of time and space derivatives; models of the dissipation equation; and chaos.
      
Fluctuation-dissipation equation of asymmetric simple exclusion processes
      
We prove that the fluctuation-dissipation equation w=Lu+D?η has a solution for some function u and some constant D identified to be the diffusion coefficient.
      
It is shown that this behavior is very much dependent on the gravitational production term in the turbulent dissipation equation, about which there is insufficient understanding in the literature.
      
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Based on the standard single phase turbulent flow model, a new turbulence model is put forward to model the gas-liquid two-phase bubbly flow in a general non-orthogonal curvilinear co-ordinate system. In this model, the dissipation of the turbulent kinetic energy of gas bubbles is governed by the dissipation equations of the gas bubbles. The convection, diffusion, production and dissipation of the turbulent kinetic energy of bubbles, and the coupling interaction between the mass, momentum, and energy of two...

Based on the standard single phase turbulent flow model, a new turbulence model is put forward to model the gas-liquid two-phase bubbly flow in a general non-orthogonal curvilinear co-ordinate system. In this model, the dissipation of the turbulent kinetic energy of gas bubbles is governed by the dissipation equations of the gas bubbles. The convection, diffusion, production and dissipation of the turbulent kinetic energy of bubbles, and the coupling interaction between the mass, momentum, and energy of two fluids are taken into account. Theroretically it is a more perfect model k*.ε and k*.ε*.k p. The predicted results by this model for the gas-liquid two-phase flow in a straight duct are in satisfactory agreement with the experimental data in the literature, with a maximum relative deviation of less than 20% within the investigated range.

从标准的单相湍流k ε模型出发 ,提出了一个任意非正交曲线坐标系下模化管道内气液两相泡状流的湍流k ε kg εg 模型 .在该模型中 ,气泡湍动能的耗散受其自身耗散方程的制约 ,并全面考虑了气泡湍动能本身的对流、扩散、生成和耗散以及与液体之间的耦合作用 .该模型在理论上比k ε模型和k ε kp 模型更加完善 .采用该模型的数值模拟结果与试验数据吻合良好 ,二者相对误差在计算范围内不超过 2 0 % .

The Reynolds Stress Model (RSM) for turbulence is described together with the kε model with and without the buoyancy term. This article describes the RSM of 11 Equation which was developed from RSM of 7 Equation for heated flows by solving additional transport equations for the turbulent heat fluxes and for the variance of the temperature fluctuations. These two models are verified by comparison to unheated turbulent pipe flow data and then applied to two problems having thermal stratification and mixing....

The Reynolds Stress Model (RSM) for turbulence is described together with the kε model with and without the buoyancy term. This article describes the RSM of 11 Equation which was developed from RSM of 7 Equation for heated flows by solving additional transport equations for the turbulent heat fluxes and for the variance of the temperature fluctuations. These two models are verified by comparison to unheated turbulent pipe flow data and then applied to two problems having thermal stratification and mixing. The first application had unstable thermally stratified flow between two horizontal plates. The second had thermal mixing between a forced convection flow and a thermal cavity which simulates the plenum above the core of a pool type fast reactor. The computational results were compared with various experimental data and show that RSM of 11 Equation is the most suitable model for simulating anisotropic turbulence in thermally stratified flows.

对Reynolds应力模型(RSM)在数值模拟热分层流场方面进行了优化,即在Reynolds应力方程和湍动能耗散方程的基础上加入标量通量方程和温度扰动方程,使原来的7方程成为了11方程。优化后的模型可以通过精确计算湍流通量输运方程来求解加热湍流中重要的热浮力项。采用7方程RSM、11方程RSM,并用k-ε湍流模型作为参考,对平板间非稳定热分层流动和模拟池式快堆堆心上方的腔室内受迫对流和热分层之间的混合流动进行数值模拟和比较分析,并将计算结果与现有实验数据相比较。结论是:优化后的11方程RSM比其他的湍流模型更适合于计算各向异性的热分层流动。

The momentum equation, energy equation, turbulent energy equation, dissipation equation are all in convection diffusion type. However, the continuity equation is not in convection diffusion type. By rational mathematic deduction, the continuity equation is transformed into convection diffusion type without any assumption or simplification for compressible flow. This effort makes all the fluid dynamic equations take on the unified convection diffusion type. A finite analytic scheme for solving such equations...

The momentum equation, energy equation, turbulent energy equation, dissipation equation are all in convection diffusion type. However, the continuity equation is not in convection diffusion type. By rational mathematic deduction, the continuity equation is transformed into convection diffusion type without any assumption or simplification for compressible flow. This effort makes all the fluid dynamic equations take on the unified convection diffusion type. A finite analytic scheme for solving such equations are given in this paper.

流体力学的动量方程、能量方程、湍动能方程和耗散方程都具有对流扩散方程的形式,但连续方程却不是对流扩散型的。对于可压缩问题,本文通过合理的数学推导,不作任何近似、假定与简化,得到一个全新的连续方程形式.该连续方程以压力为未知变量,并具有对流扩散型形式,使得所有的流体动力学方程组都具有完全统一的方程形式,给出了这种三维对流扩散方程组的有限精确差分计算格式。对流体力学的进一步发展具有一定意义.

 
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