本文从理论和实验方面研究了石油钻井泥浆常用的幂律液体在钻柱中的螺旋流动规律。
The helical flow of power-law drilling muds in the drill string was studied both theoretically and experimentally.
采用有限容积法研究了圆截面螺旋管道内幂律流体的流动。
The study of the flow of power-law fluid in a helical pipe with circular section with numerical method (finite volume method).
采用摄动方法研究了圆截面螺旋管道内幂律流体的流动。
The study of the flow of power-law fluid in a helical pipe with circular section with perturbation method.
本文对低压水-空气两相流动在立式螺旋管内向下流动的流型及其转变特性进行了实验和理论研究。
This paper describes an experimental and theoretical research on the two-phase flow pattern transition of downflow in vertical helical coils in an air-water loop.
本文全面地研究了幂律流体和宾汉流体在偏心环空中层流螺旋流的流动规律与流动状态的判别。
This paper studies the flow law of the laminar helical flow of the power law fluid and Billgham fluid in eccentric annular space and the determination of the flow state.
实验研究了微肋螺旋管内两相流动传热性能，并与光滑螺旋管进行了比较。
The two-phase flow heat transfer capability is tested and compared with the smooth helical tube.
采用摄动方法研究了圆截面螺旋管道内幂律流体的流动。
The flow of power-law fluid in a helical pipe with circular section has been studied using perturbation method.
讨论了曲率和挠度对二次流动、流函数等值线和轴向速度的影响，研究了不同曲率和挠度螺旋管道内流量与压力梯度之间的关系。
The effects of curvature and torsion on secondary flow, isoline of stream function and distribution of the axial velocity of flow were discussed.
通过对天然气在螺旋弯曲和正弦弯曲流道内的流动速度、密度和螺旋度进行研究，得到天然气对弯曲油管的作用力。
After studied the natural gas flow speed, density and helicity in the spiral and sine flow channel, the effects of natural gas to the bending tubing was obtained.
对蒸发状态下水平螺旋槽管管外壁面升膜的形成机理和流动特性进行了研究。
The mechanism of the formation of the rising liquid thin film and its flow characteristics on the fluted surface of a horizontal tube was investigated.
通过采用玻璃管和不锈钢管模拟分离式热管的蒸发段，对不同充液率和热流密度下，小螺旋管管内流体的流动与换热特性进行了实验研究。
Through the use of a glass tube and stainless steel tube a simulation was conducted of the evaporating section of the above mentioned heat pipe.
本文应用界面化学理论研究表面作用对分离式热管小螺旋管蒸发段管内流动和换热特性的影响。
The working principle of a new separated type heat pipe using the gap of canular structure as the evaporation and condensation space was introduced in the paper.
本文应用界面化学理论研究表面作用对分离式热管小螺旋管蒸发段管内流动和换热特性的影响。
The working principle of a new separated type heat pipe using the gap of canular structure as the evaporation and condensation space was introduced in the paper.
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