WERNER SUTOR FOUNDATION

Experimental Investigations to Improve Numerical Modeling of Cavitation

Motivation

Computational models for cavitation are still considered to be immature. In order to enhance the predictive reliability, further validation based on more comprehensive experimental data is required. On behalf of Hamburg University of Technology (TUHH), several series of cavitation tests have been carried out in the Medium Cavitation Tunnel of the Hamburg Ship Model Basin (HSVA, www.hsva.de). The investigations were concerned with cavitation measurements for a NACA0015-profile at different angles of attack and cavitation numbers. These tests were performed under the aegis of the WERNER SUTOR FOUNDATION and designed to supply a data basis for the validation of computational approaches to model cavitation.

Test Rig

The tests were performed in the medium cavitation tunnel of the HSVA. Deatails of the experimental facillity are summarised in the below given table. Further details can be obtained from the web-pages of the HSVA (cf. Test Facilities). The illustration of the test set-up is designed to support the build-up of a computational domain for a computational validation execise.

Medium cavitation tunnel

Dimensions0.57x0.57x2x20m
Min. σ0.50
Max. Velocity10.0m/s
Max. Revs. of Model Propeller 50 1/s
Range of Propeller Diameter0.23-0.29m
Type of Drive System4 bladed axial flow impeller, 4 quandrant thyristor converter control
Max./ Min. Pressure1.5bar absolute / down to vapour pressure
Type and Location of Torque and Thrust DiameterMechanical, Upstream, Horizontal Shaft 14.3kW at 35000 1/min

Test setup

ProfileNACA 0015                                
c0.20mH0.57m
x 0.60mI0.55m
L2.20mh0.285m
B0.57mv6/9m/s

Results

You can find the results and reports of the individual project parts here:


Results part I.

Results part II.