Use CFD simulation to predict fluid cavitation and reduce its impact
Cavitation in fluid mechanics is caused by a sudden reduction in fluid pressure, which allows a phase change to occur and bubbles of gas to form in the liquid. This occurs in many fluid flows, especially in rotating machinery such as pumps, valves, and propellers. Fluid cavitation leads to vibration, noise, and erosion and can cause structural wear and damage. In marine applications propeller cavitation reduces propulsion efficiency and creates erosion on both the hull and propeller blades. It is therefore important to accurately predict if cavitation will occur, where on the propeller it can be found, and ensure propeller designs reduce or prevent fluid cavitation as much as possible.
Multiphase modeling using computational fluid dynamics (CFD) is a vital tool for understanding cavitation. Physical tests of scaled propellers are of limited use, due to the differences between their predictions and real-world, full-scale operating conditions. CFD can accurately predict cavitation and enables fast investigation of multiple designs.
Learn how to perform accurate cavitation simulation
Cavitation on a ship propeller can be accurately predicted with the common cavitation models available in CFD codes such as Simcenter STAR-CCM+ This paper looks in detail at the challenges you may encounter when running a cavitation simulation. Learn how to assess the impact of:
On your cavitation simulation results. The paper includes comparisons between CFD simulations and experimental data from SVA Potsdam GmbH.
Drive your ship design process with marine CFD
We believe that a comprehensive digital twin is critical to the future of marine innovation and efficiency. Our portfolio of simulation and test tools is flexible, open, and scalable and supports you at every step of your marine design process. Our solutions provide an integrated design environment, automated marine CFD workflows, and intelligent design exploration tools. This enables the rapid analysis of many design variants and an increased understanding of propeller and ship performance from the earliest design stages.
Learn more about the author and his background in marine computational fluid dynamics (CFD)
Professor Milovan Peric has worked on CFD and its applications in marine for over thirty years and has held research positions in both academia and commercial software companies. He is co-author of the popular book “Computational methods for fluid dynamics” and author or co-author of about 200 papers on the development and application of CFD. He currently holds a research position at the Institute of Ship Technology, Ocean Engineering and Transport Systems at the University of Duisburg-Essen, and is a Senior Consultant on marine CFD for Siemens Digital Industries Software.