This paper gives a brief introduction of the drag reduction characteristics of the dilute solution of high polymer in pipelines, the possibility of its application to oil pipelines.
本文简要地论述了高分子聚合物稀溶液管道减阻的特点，并探讨了在输油管道上应用的可能性与存在问题。
The effects of the tip shape of V-groove on drag reduction and flow field characteristics by numerical analysis;
近年来对于水下条纹沟槽表面减阻的研究多集中在试验方面，理论分析和数值计算进行的却不多。
The effects of the tip shape of V-groove on drag reduction and flow field characteristics by numerical analysis;
近年来对于水下条纹沟槽表面减阻的研究多集中在试验方面，理论分析和数值计算进行的却不多。
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