Crest of the Royal National Institution of Naval Architects - Click to return to the homepage

The Royal Institute of Naval Architects

Jotun 09/11/2016

Bentley Systems 10/11/16

IJSCT 160

Paper Title: Comparison Between Freewheeling and Locked Sailboat Propeller Drag Using a Computational Fluid Dynamics Approach

 

Authors

R E Spall, Utah State University, USA

Summary

Computational fluid dynamics calculations were performed to predict the drag of locked and freewheeling 2- and 3-blade, 12 inch diameter, 6 and 10 inch constant pitch sailboat propellers.  Drag levels and coefficients for both freewheeling and locked configurations are presented for flow velocities ranging from 1 m/s to 4 m/s.  Results indicate that the drag for the freewheeling configurations were in all cases below those for the locked configurations at equivalent flow velocities.  However, the relative magnitude of the decrease was found to be strongly dependent on the blade design.

Reference

Transactions RINA, Vol 156, Part B2, International Journal of Small Craft Technology, Jul-Dec 2014 

DOI Number

DOI No: 10.3940/rina.ijsct.2014.b2.160

Search and Order IJSCT papers

All International Journal of Small Craft Technology (IJSCT) papers are listed in the RINA Publications Database. You can search the database by author name and paper title. Publications may be ordered and paid for online. Other publications are also listed, some of which may be downloaded free of charge. Follow the link to Search Publications & Order.

Alfa Laval 260x120

Stone Marine 260x120

Rolls Royce Marine 2016

JETS VAC July 2015

KnudNoSMM2

Drew Safety