SUPR
Cavitation nuisance
Dnr:

NAISS 2024/23-38

Type:

NAISS Small Storage

Principal Investigator:

Rickard Bensow

Affiliation:

Chalmers tekniska högskola

Start Date:

2024-02-01

End Date:

2025-02-01

Primary Classification:

20306: Fluid Mechanics and Acoustics

Webpage:

Allocation

Abstract

The storage is intended for projects working with simulation of cavitation nuisance at Chalmers, M2/MT. This relates to research on development of computational models for cavitating flows and analysis of the incurred nuisance related primarily to erosion and noise. For the coming year, the project on predicting cavitation noise related to marine propulsion systems will expand and analysis will be performed for a complete ship in both model and full scale. This will further involve specialised studies for scale effects on cavitation. This requires simulating detailed transient development of cavitation on the propeller blade during operation is needed to analyse the nuisance, thus the simulations are rather demanding both in terms of computational resources and storage. The activities related to prediction of cavitation erosion has shifted to issues with water jet propulsion systems. The methods from previous studies are transfered to this application and evaluated; possibly new methods more suitable for this low pressure application will be investigated as well. A third application involves looking at gap flow vortex cavitation as is present in hydropower turbines. A novel compressible Euler-Lagrange approach is used to study scale effects in this type of flows.