Waterjet Propulsion and Negative Thrust Deduction
Paper i proceeding, 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.

Resistance increment

CFD.

Intake drag

Thrust deduction fraction

Waterjet propulsion

Exit drag

Författare

Arash Eslamdoost

Chalmers, Sjöfart och marin teknik, Marin teknik

Lars Larsson

Chalmers, Sjöfart och marin teknik, Marin teknik

Rickard Bensow

Chalmers, Sjöfart och marin teknik, Marin teknik

Fourth International Symposium on Marine Propulsors, SMP’15

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Styrkeområden

Transport

Energi

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Ämneskategorier

Strömningsmekanik och akustik