Drag on a sphere accelerating rectilinearly in an elastico-viscous fluid
โ Scribed by R.Y.S. Lai; C.P. Fan
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 617 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0020-7225
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## Abstract Drag coefficients of aerodynamically smooth spheres having a density variation of from 0.252 to 1.91 g./cc. and a diameter variation from 1.56 to 3.21 mm. were obtained for acceleration rates varying from 103.5 ft./sec.^2^ to โ30 ft./sec.^2^ and for relative intensities of up to 45%. Th
Hill's extremum principles are not directly applicable to an Ellis model fluid. A method of adapting Hill's principles to the Ellis model was developed and used to calculate upper and lower bounds on the drag coefficient for a sphere moving slowly through such a fluid. Amilable experimental data wer