为充分了解分解炉的性能，应用适宜的模型来模拟分解炉内部三维流场是很有意义的。
In order to study characteristics of the calciner, it is significant to simulate the three-dimensional flow in calciner with proper mathematical models.
建立了内燃机换气系统普遍使用的弯曲圆形管道气体流场计算的三维模型及有关边界条件。
The model of three-dimensional flow in circular bend tube which is widely used in gas exchange system of internal combustion engine is developed in this paper.
给出了三维流场计算的模型方程，对倾斜壁面及入口的边界条件作了特殊处理。
Model equations for three dimensional calculation are given. Special treatment of boundary conditions at the entrance and the inclined wall is carried out.
采用涡耗散概念（EDC）模型，对等离子发生器内三维湍流燃烧流场进行数值模拟。
The eddy-dissipation-concept (EDC) model is used to simulate the three-dimensional combustion process in a plasma generator.
对运动电弧作用下脉冲tIG焊接熔池流场与热场动态变化过程建立了三维数学模型。
A three-dimensional numerical analysis model of fluid flow and heat transfer in pulsed current TIG weld pool is developed.
用三维流场计算软件，对空调用轴流风扇的内部流动特性进行了数值模拟计算，讨论了不同的简化模型对计算结果的影响。
Adopting fluent software, the inner flow of the axial flow fan in aircondition is simulated, the influence of different simplified models is discussed.
根据爆炸力学、爆炸动力学和热力学理论，建立了瓦斯爆炸流场三维动态数学模型。
A 3-d dynamic mathematical model of gas explosion flow field was built based on explosion mechanics, explosion dynamic mechanics and thermodynamics.
针对等离子点火器内三维湍流燃烧流场，采取有限速率化学反应模型，模拟其物理化学过程。
This paper used a finite-rate method to simulate the three-dimensional combustion process in a plasma generator.
结合这些流场与泥沙计算方法及河床形态调整技术，作者提出一个准三维河流动力学模型。
Combining the computation of velocity field and sediment transportation with the adjusting technique of river geometry, a quasi_3D dynamic model for fluvial processes have been proposed.
本文采用流体动力学三维紊流模型对大棚内部流场进行数值模拟。
Velocity field inside the greenhouse is studied by numerical simulation theory of 3d turbulent model of CFD.
用局部径向流场假设对原一维流场假设进行修正，建立了新的拟三维模型。
A new pseudo three-dimension (P3D) hydraulic fracturing model is built up by modifying the original single dimension fluid field with the local radial fluid field.
建立了双辊式薄带钢铸轧过程的三维流场与温度场耦合数学模型，研究了工艺参数对铸轧过程的影响。
Temperature field of cast roll and its thermal deformation were studied during strip casting with elastoplastic and thermal stress coupled FEM.
建立跨中截面三维计算模型，比较三维与二维流场数值模拟的异同。
Thirdly, a 3D computation model of the mid-span section deck was established, the similarity and difference between 2D and 3D numerical simulation of flow field are compared also.
建立跨中截面三维计算模型，比较三维与二维流场数值模拟的异同。
Thirdly, a 3D computation model of the mid-span section deck was established, the similarity and difference between 2D and 3D numerical simulation of flow field are compared also.
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