THE FLOW ADAPTED GRID (FLAG) APPLIED TO THE ANALYSIS OF PROPELLER TIP FLOWS
A new panel arrangement is implemented for the prediction of propeller tip flows via a boundary element method. The proposed grid, namely the FLow Adapted Grid (FLAG), is normal to the leading edge outline and adapted to the force free wake geometry at the trailing edge. The location of the tip vortex detachment point is determined by an iterative method. The FLAG is applied on two propeller geometries and the results from the panel method are compared to those from applying other commonly used grids. The FLAG is found to: a) improve the predicted velocity flow field and the pressure distribution at the tip region, b) accelerate thee convergence of an iterative pressure Kutta condition, c) reduce the difference in circulation distribution between before and after iterative pressure Kutta condition, and d) improve the overall numerical performance of the method and its consistency to lifting surface theory.
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Supplemental Notes:
- Propellers/Shafting '94 Symposium; 20-21 Sept 1994; Virginia Beach, VA, USA. Sponsored and Publ by SNAME, USA. Pprs. Ppr no 10 [10 p, 9 ref, 3 tab, 17 fig]
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Authors:
- Pyo, Sangchul
- Kinnas, S A
- Publication Date: 1994
Language
- English
Subject/Index Terms
- TRT Terms: Boundary element method; Pressure
- Uncontrolled Terms: Pressure distribution
- Old TRIS Terms: Propeller flow
- Subject Areas: Marine Transportation;
Filing Info
- Accession Number: 00717702
- Record Type: Publication
- Source Agency: British Maritime Technology
- Files: TRIS
- Created Date: Mar 4 1996 12:00AM