UNSTEADY LOADS ON HYDROFOILS INCLUDING FREE SURFACE EFFECTS AND CAVITATION
Abstract
Linearized three-dimensional lifting surface theory is applied to a variety of problems of interest in hydrofoil application. The resulting integral equations are solved by numerical techniques on a high-speed digital computor to predict steady and oscillatory loads. The following cases are discussed: thin non-planar hydrofoils at infinite Froude number, the effect of gravity waves on the forces on an oscillating hydrofoil near the free surface, supercavitating hydrofoils of finite span in steady and oscillatory motion. Numerical results for lift and moment are presented and comparison with experiment is made whenever possible. Results of these calculations indicate that this numerical solution is a very practical and efficient way to obtain accurate prediction of unsteady loads for flutter calculations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1964
- Accession Number
- AD0603246
Entities
People
- Sheila Evans Widnall
Organizations
- Massachusetts Institute of Technology