机械工程

• 非定常

水利工程

• 非恒定

  In this paper，a one-dimensional numerical model was developed for unsteady flows in long-route open channel with complex inner boundary conditions.

  建立了复杂内边界长距离输水明渠的一维非恒定流数学模型。

• 非定常

  In chapter 3, three dimensions unsteady turbulent flow numerical simulation is used for tail tube of the Three Gorges Hydropower, and frequency spectrum analysis is made for pulsation pressure, therefore frequency and corresponding amplitude of pulsation pressure is concluded.

  第三章对三峡水电站尾水管进行了三维非定常湍流模拟，并对脉动压力进行频谱分析，得出脉动压力的频率成分和相应的幅值。

航空、航天科学技术

• 非稳态

  This paper describes a numerical simulation method used to resolve coupled unsteady convective and conductive problem in pipeline.

  文章主要描述了一种用于求解管路中非稳态对流换热和非稳态导热耦合问题的数值方法。

能源科学技术

• 非稳态

  Some views on efficiency evaluation of coal-fired power generating unit under unsteady conditions are discussed, and model calculating total coal consumption during a period of time is established.

  讨论了非稳态工况下火电机组的经济性评价存在的一些问题,并建立了一段时间内煤耗量的计算模型。

计算机科学技术

• 不稳定的

• 不安定的

• 不定常的