以流体力学三大守恒方程为基础，建立了等温和非等温条件下的燃气管网稳态和动态仿真理论模型。
The theoretical dynamic simulation models for stationary flow and transient flow under the isothermal and non-isothermal condition are set up based on the three conservation equations.
以双流体模型为基础，通过质量守恒方程和动量守恒方程的耦合，提出了液液两相系中弥散传质的连续波模型。
A continuity wave model is put forward for the dispersion process of liquid-liquid two-phase system, by coupling mass and momentum conservation equations of two-fluid model.
通过对流体的局部、瞬时守恒方程进行系综平均，得到了双流体模型的基本方程。
The basic equations of two-fluid model have been developed byapplying ensemble averaging to the local instantaneous conservation equations.
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