| Journal: | Journal of the Brazilian Society of Mechanical Sciences and Engineering |
| Database: | PERIÓDICA |
| System number: | 000312227 |
| ISSN: | 1678-5878 |
| Authors: | Chwang, A.T1 |
| Institutions: | 1University of Hong Kong, Department of Mechanical Engineering, Hong Kong. China |
| Year: | 2004 |
| Season: | Oct-Dic |
| Volumen: | 26 |
| Number: | 4 |
| Pages: | 349-354 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | The hydrodynamic interaction between two bodies with rotational motion through an inviscid and incompressible fluid is investigated theoretically. The dynamical behavior of an elliptic cylinder moving around a fixed circular cylinder is described first based on the dynamical equations of motion in the plane of motion. In a relative coordinate system moving with the stream, the kinetic energy of the fluid is expressed as a function of fifteen generalized added masses due to the planar motion of the two cylinders. By means of the generalized added masses, the planar motion of an elliptic cylinder around a fixed circular cylinder can be computed without considering the flow field. The trajectories of an elliptic cylinder around a fixed circular cylinder in planar motion are obtained and the effects of non-circularity, initial position and initial velocity on the interaction between two cylinders are discussed. Similarly, the planar motion of a prolate spheroid around a sphere is investigated. The numerical results show explicitly that the dynamical behaviors of the moving bodies with rotational motion appear nonlinear. Their moving properties exhibit significant difference from those in the particle dynamics |
| Disciplines: | Ingeniería, Física y astronomía |
| Keyword: | Ingeniería mecánica, Dinámica de fluidos, Interacción hidrodinámica, Elementos rotacionales, Fluido incompresible, Flujo potencial, Lagrange, Masas sumadas |
| Keyword: | Engineering, Physics and astronomy, Mechanical engineering, Fluid dynamics, Hydrodynamical interaction, Rotational elements, Compressible fluids, Potential flow, Lagrange, Added mass |
| Full text: | Texto completo (Ver HTML) |
