管道车在平直管段振动运移水力特性分析

Hydraulic characteristics of vibrational transport of a piped carriage within a pipeline

近年来,传统运输方式存在交通堵塞、能源危机与环境污染等问题,已严重制约经济社会与生态环境的可持续发展。筒装料管道水力输送是一种集节能和环保于一体的运输方式,能够克服传统运输方式的不足。为分析管道车在平直管段振动运移水力特性,对管道流体域与管道车固体域进行流固耦合求解,并将模拟值与试验值对比。结果表明:管道车瞬时平动速度与瞬时转动角速度呈波动变化,可将其运动视为振动运移;导流条安放角增加引起管道车平动速度与转动角速度增大;环状缝隙流与管道流体掺混引起管道车下游压强先降低后升高;管道车振动运移时流速分布一致,而压强分布呈现降低趋势;导流条安放角增加使得平均压降系数呈先减小后增大,当安放角为24°,平均压降系数最小。该研究将为筒装料管道水力输送实际应用提供理论基础。

In recent years,the problems of traffic congestion,energy crisis,and environmental pollution in the traditional transport modes have severely restricted the sustainable development of both economics and ecological environmental.The tube-contained raw material pipeline hydraulic transportation is a transport method with both energy saving and environmental protection,which overcomes the shortcomings of traditional transport modes.In order to analyze the hydraulic characteristics of vibrational transport of a piped carriage within a pipeline,the fluid-solid coupling solution between fluid domain of the flow field and the solid domain of the piped carriage within the pipeline was given,and simulated results were compared with experimental results.The results show that the instantaneous translational speed and instantaneous rotational angular speed of the piped carriage are in fluctuating state,and the motion of the piped carriage is regarded as vibrational transport.The increase in the placement angle of the guide vane causes both the translational speed and the rotational angular speed of the piped carriage to increase.The annular gap flow and the pipe fluid mixed with each other,causes the pressure at the downstream flow field of the piped carriage to first decrease and then increase.The velocity distributions of vibrational transport of the piped carriage are unified,while the pressure distributions shows a descending trend.The increase in the placement angle of the guide vane causes the average pressure drop coefficient to first decrease and then increase,and when the placement angle is set to 24°,the average pressure drop coefficient reaches the minimum.This paper provides a theoretical basis for practical application of the tube-contained raw material pipeline hydraulic transportation.