冷流体 meaning in English

cold fluid
cool fluid

These methods are following : ( 1 ) in order to build fem model conveniently and enhance calculating speed , interceped a finite length and built a 2d - symmetry model . ( 2 ) in order to apply loads conveniently , kept the entrance of cold fluid . ( 3 ) in order to obtain numerical results in steady situation , lengthened export and import ends
这些方法主要有： ( 1 )为了便于建立模型并提高计算速度，对于实际工程中采用的长径比特别大的换热管采取截取有限长度的方法并建立二维对称简化模型； ( 2 )提出采取保留冷流体入口端，截取有限长度的方法施加载荷； ( 3 )适当延长翅片管的出口端和入口端，以便获得稳定工况的数值解。