Drag force on an oblate spheroidal bubble

✍ Scribed by A.M. Luiz

• Publisher: Elsevier Science
• Year: 1967
• Tongue: English
• Weight: 486 KB
• Volume: 22
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(67)80173-8

✦ Synopsis

Abstraet--A systematic approach to the study of motion of bodies in ideal fluids is discussed under the "effective mass" approach which essentially consists of making an analysis of the total kinetic energy of the system. The calculations of the dynamic quantities of the system are made by knowing the mass "induced" by the body in the fluid. A study on the steady motion of an oblate spheroidal bubble is done and neglecting the contribution due to the wake, the drag on the bubble is calculated• The drag is determined by the effective mass approach and by the energy dissipation in the boundary layer. At the limit, when the spheroid becomes a sphere, the formulas derived are in accordance with Levich's result. The results obtained by the author are compared with MOORE'S result [5] and a fair agreement is obtained for slight deformations of the bubble.