Accession Number : AD1000888


Title :   Propeller Analysis Using RANS/BEM Coupling Accounting for Blade Blockage


Descriptive Note : Conference Paper


Corporate Author : Defence Research and Development Canada Dartmouth, Nova Scotia Canada


Personal Author(s) : Hally,David


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1000888.pdf


Report Date : 04 Jul 2015


Pagination or Media Count : 8


Abstract : A popular method for analyzing a propeller operating behind a ship is to couple a Reynolds-averaged Navier-Stokes (RANS) solution of the flow around the hull with a solution for the flow around the propeller calculated using the Boundary Element Method (BEM). In the RANS/BEM coupling procedure, it is important that both solvers agree on the upstream propeller induction. Failure to do so causes an under-prediction of the thrust and torque. A method of accounting for the blade blockage by adding source terms to the equation of continuity in the RANS solver is described. Estimates of the importance of the blade blockage effect are obtained by analyzing the propeller of the well-known KRISO container ship (KCS).


Descriptors :   PROPELLERS , BLADES , flow , Boundary Element Methods


Subject Categories : Marine Engineering


Distribution Statement : APPROVED FOR PUBLIC RELEASE