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|標題:||Experimental determination among available theories describing the drag force exerting on steel spheres and Cu and Al cylinders moving in a viscous fluid|
|期刊/報告no：:||Physica Scripta, Volume 70, Issue 6, Page(s) 349-353.|
|摘要:||This experiment is mainly aimed to determine which one of various available formulas is the most satisfactory for describing the drag force experienced by a moving object of different shape. size and material in viscous fluid ill a long cylindrical container. The interesting problem on drag coefficient C-d and drag function f(R/D, Re) for moving objects of finite-length cylinders are also investigated. We find that Oseen's formula is the best for steel spheres whereas the Happel and Brenner's cylinder formula is satisfactory for Cu and At cylinders.|
|Appears in Collections:||期刊論文|
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