CFD Review  
Serving the CFD Community with News, Articles, and Discussion
CFD Review

User Preferences
Site Sponsorship
Headline Feeds
Mobile Edition
Privacy Policy
Terms of Service

Submit a CFD Story

Site Sponsors
The Choice for CFD Meshing
CFD Review

Tell a Friend
Help this site to grow by sending a friend an invitation to visit this site.

CFD News by Email
Did you know that you can get today's CFD Review headlines mailed to your inbox? Just log in and select Email Headlines Each Night on your User Preferences page.

Random CFD Image

Image Caption
Measuring the velocity distribution behind a nozzle propeller in the Potsdam cavitation tunnel.
Application: CFD Assists Nozzle Propeller Design
Posted Wed April 02, 2003 @09:35AM
Print version Email story Tweet story
Application by Moustafa Abdel-Maksoud and Hans-Jürgen Heinke, SVA Potsdam

Nozzle propellers are used in many types of ships and for dynamic positioning of platforms. Their operation at high thrust loadings and low inflow velocities requires high-tech designs. SVA Potsdam specializes in these propulsion systems and is investing in continuous research to ensure that its designs meet expectations.

The flow in the gap between the propeller tip and the inside wall of the nozzle strongly influences the performance of the propeller, and the greater the thrust loadings, the greater the influence. CFD allows visualization of these flows, which are difficult to study experimentally because the gap can be less than one millimeter. Unfortunately, the required computational effort increases rapidly as the thrust loading increases (due to slower convergence as the rotational speed of the propeller increases), and we have realized that combining experimental and numerical investigations can overcome the shortcomings of each method. The experimental data provide a good overview of the forces and moments for the whole range of operational conditions, while CFD reveals the detail of the flow for selected loadings.

( Read Full Article )

View: [All images]   [Another random image]

Let us endeavor so to live that when we come to die even the undertaker will be sorry. -- Mark Twain, "Pudd'nhead Wilson's Calendar" All content except comments
©2019, Viable Computing.

[ home | submit story | search | polls | faq | preferences | privacy | terms of service | rss  ]