極低レイノルズ数領域における円柱の抗力

概要

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The measurement of the drag of a circular cylinder at low Reynolds numbers with two-dimensional flow while the circular cylinder is being moved slowly between two parallel side planes in a viscous liquid is a popular subject. However, in almost all experimental cases up to now, it has been done with a finite circular cylinder. For the our experiment, the method of measuring the total drag of an infinite circular cylinder has been developed, as well as the measurement equipment using a link mechanism to obtain the dribblet drag smaller than a few grams because of the very slow moving speed of the circular cylinder. The measured results generally agree with results calculated using Tachibana's and Faxen's formulas. It has been proven that Tachibana's and Faxen's formulas can almost cover the range of 10^<-4> of Reynolds number, by the our experiment. This paper provides a summary of the measuring method, the measured results and a comparison with the calculated results of Tachibana and Faxen.
一般社団法人日本機械学会の論文
1994-06-25