2024 SHIPFLOW User Meeting and Training
FLOWTECH will celebrate its 35th Anniversary this year!
We warmly invite all our users to join us in Gothenburg to share their experiences, learn about new features, and enjoy the Swedish summer.
Our User Meeting and Training sessions will take place on June 4th and 5th.
Stay tuned for more information coming soon!
If you're interested in signing up, please contact us at info@flowtech.se .
SHIPFLOW 7.1 released!
SHIPFLOW 7.1
We are happy to announce that the new major release of SHIPFLOW, version 7.1, is now available for download. We have added many new features and improvements that we think you will find very useful.
MOTIONS 7
• improved robustness and stability for wider range of applications
• enabled free sailing, zig-zag and turning circle maneuvres
• added appendages: rudder, fin, bilge keel, skeg
• added engine and propeller models
• PID controllers for rudders, fins and engine
RANS
• increased accuracy of the VOF method
• added lifting line modification for ducted propellers
Design/GUI
• added CAESES 5 based interface (optional)
For more details see the Release Notes.
Validation of full-scale delivered power CFD simulations
A new paper published in Ocean Engineering Journal:
Michal Orych, Sofia Werner, Lars Larsson, 2021. Validation of full-scale delivered power CFD simulations. Volume 238, 15 October 2021, 109654
https://www.sciencedirect.com/science/article/pii/S0029801821010301
Abstract:
Verification and Validation of CFD simulations of delivered power at full-scale are carried out for a single screw cargo vessel. Numerical simulations are performed with a steady-state RANS method coupled with a body force propeller model based on a lifting line theory. There are no significant differences in the uncertainty levels between model and full-scale computations. The finest grid exhibits the numerical uncertainty of 1.40% at full-scale. Computed results are compared with sea trial data for three sister ships. Special attention is paid to the effect of roughness on the hull and propeller. The comparison error for the delivered power is about 1% which is significantly lower than the experimental uncertainty.
Keywords:
Delivered power; Full-scale; Hull roughness; Self-propulsion; Uncertainty; Validation; Verification; CFD