Waterjet Propulsion and Negative Thrust Deduction
Paper in proceedings, 2015

The thrust deduction fraction of waterjet-propelled hulls is often reported to be negative in the speed range close to the operating speeds. In this paper, employing a numerical method, the bare hull and the self-propelled hull flows are studied. The changes between the bare hull and self- propelled hull resistances are investigated for understanding whether it is the waterjet hull resistance decrease which contributes to the negative thrust deduction fraction or there are some other effects rather than the resistance increment.

Exit drag

Intake drag

CFD.

Resistance increment

Waterjet propulsion

Thrust deduction fraction

Author

Arash Eslamdoost

Chalmers, Shipping and Marine Technology, Marine Technology

Lars Larsson

Chalmers, Shipping and Marine Technology, Marine Technology

Rickard Bensow

Chalmers, Shipping and Marine Technology, Marine Technology

Fourth International Symposium on Marine Propulsors, SMP’15

Driving Forces

Sustainable development

Innovation and entrepreneurship

Areas of Advance

Transport

Energy

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

Subject Categories

Fluid Mechanics and Acoustics

More information

Latest update

11/9/2018