Numerical Investigation of Propeller Skew Effect on Cavitation
Journal: Journal of Eta Maritime Science (Vol.7, No. 2)Publication Date: 2019-06-30
Authors : Şakir BAL;
Page : 127-136
Keywords : Cavitation; Propeller; Skew; Lifting Surface Method;
- Numerical Investigation of Propeller Skew Effect on Cavitation
- THE EFFECT OF VARIATION SKEW ANGLE B-SERIES PROPELLER ON PERFORMANCE AND CAVITATION
- The New Propeller Design 3 Blades Type on 18o Skew Angle and Testing Cavitation of Tailing Thai Boat
- The Numerical Analysis of Marine-Ship Propeller
- Numerical and Neural Network Modeling and control of an Aircraft Propeller
Abstract
This paper addresses the skew effects (a significant geometric property) of marine propellers on cavitation phenomenon numerically. DTMB 4381, 4382, 4383 and 4384 model propellers with different skew values have been chosen to investigate the cavity patterns on the blades under open water conditions. A lifting surface method has been applied for both non-cavitating and cavitating propellers. Numerical results (nondimensional thrust and torque coefficients, efficiency values and cavity patterns on the blades) have been validated with experimental results. It has been found that the present numerical method is accurate and reliable for predicting the hydrodynamic performance of both non-cavitating and cavitating propeller under open water conditions. It has also been found that under certain conditions the skewed blades of the propeller can cause lesser cavity patterns and improve the propeller performance.
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Last modified: 2019-07-09 19:10:38