Propeller Analysis Using RANS/BEM Coupling Accounting for Blade Blockage

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Authors
  1. Hally, D.
Corporate Authors
Defence Research and Development Canada, Atlantic Research Centre, Halifax NS (CAN)
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).
Keywords
Propellers;Reynolds-averaged Navier Stokes (RANS);Boundary Element method (BEM) effective wake;ship powering
Report Number
DRDC-RDDC-2015-N005 — External Literature
Date of publication
01 Jun 2015
Number of Pages
8
DSTKIM No
CA040391
CANDIS No
801507
Format(s):
Electronic Document(PDF)

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