Lateral oscillation of disks of variable thickness and diameter | |
| Author | Alam, A. F. M. Shamsul |
| Call Number | AIT Thesis no. 17 |
| Subject(s) | Oscillations Disks, Rotating |
| Note | A thesis submitted in partial fulfillment if the requirements for the degree of Master of Engineering in the SEATO Graduate School of Engineering, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | When a disk is placed in flowing water, at right angles to the direction of fluid motion, the shedding of vortices in the wake behind the disk causes a periodic lateral force which induces a lateral oscillation. The present study is concerned with the establishment of the relationships which exist among the variables of this problem. Among these variables are the amplitude of oscillation, the period of oscillation, the lateral force, and whatever flow parameters, such as the Strouhal number or Reynolds number as may be involved. The differential equation of motion for a laterally oscillating disk is derived and solved. The resulting expressions yield relationships between the force, the amplitude of oscillation and the various constants associated with the particular configuration. The lateral force and amplitude of oscillation, expressed in the form of dimensionless parameters, are then correlated to the Strouhal number and lateral drag coefficient. Relationships involving the viscous damping coefficients and added mass coefficients have also been established. These results enable one to predict the amplitude of oscillation, period of oscillation and lateral force when a disk of a certain diameter and thickness is placed in a moving fluid. |
| Year | 1962 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Degree | Thesis (M.Eng.) - SEATO Graduate School of Engineering, 1962 |