velocity-modulated tube

Through the numerical simulation in the spiral tube rolling bending forming process, the stability of plastic deformation region was resolved, and the variational rules of thickness on cross section, forming velocity and deforming force is researched.

通过螺旋盘管滚弯成形过程的数值模拟，解决了其成形过程中的稳定性问题，分析了螺旋盘管成形时断面壁厚、成形速度以及成形力的变化规律。

The results show that, in the coupled heat transfer of laminar developing flow of high temperature medium in a tube, the effects of thermal radiation on the velocity distribution and heat transfer intensity is obvious even though the optical thickness is not large.

结果表明，即使在不大的光学厚度下，热辐射作用对管内高温介质层流入口段耦合换热的速度场与换热强度都有明显影响。

Computer simulation of three dimensional velocity fields in seamless tube cross rolling process

钢管斜轧延伸变形区中工具三维运动速度场计算机模拟

Through industrial testing of tube panel of superheater, the flushing flow velocity was determined, with difficult problems of superheater claming of operating boiler solved.

经过热器管排的工业试验，确定了清洗冲通流速，解决了运行炉过热器清洗的技术难题。

However, the tangential motion of the fluid in the smooth tube was only stochastic, and the tangential velocity was smaller by two orders of magnitude.

而光管内流体的流动只有随机的切向运动，且其切向速度要比扭带管内的切向速度小2个数量级；