Modelling a Propeller using Force and Mass Rate Density Fields

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Authors
  1. Hally, D.
Corporate Authors
Defence Research and Development Canada, Atlantic Research Centre, Halifax NS (CAN)
Abstract
A method to replace a propeller by force and mass rate density fields has been developed. The force of the propeller on the flow is calculated using a boundary element method (BEM) program and used to generate the force and mass rate fields in a Reynolds-averaged Navier–Stokes (RANS) solver. The procedures to calculate the fields and to allocate them to the cells of a RANS grid are described in detail. The method has been implemented using the BEM program PROCAL and the RANS solver OpenFOAM and tested using the propeller DTMB P4384 operating in open water. Close to the design advance coefficient, the time-average flow fields generated by PROCAL and by OpenFOAM with the force and mass rate fields match to within 1.5% of the inflow speed over almost all of the flow field, including the swept volume of the blades. At two-thirds of the design advance coefficient, the match is about 4% of the inflow speed. The sensitivity of the method to several of its free parameters is investigated.
Keywords
propeller;force field;mass rate field;Reynolds-averaged Navier-Stokes (RANS);Boundary element Method (BEM)
Report Number
DRDC-RDDC-2018-P055 — External Literature
Date of publication
01 Apr 2018
Number of Pages
26
Reprinted from
Journal of Marine Science and Engineering, vol 6, issue 2, p. 1-22
DSTKIM No
CA045914
CANDIS No
806370
Format(s):
Electronic Document(PDF)

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