Cavitation Tunnel

The Cavitation Tunnel Laboratory was set up in 1979 and won the 2nd prize of national scientific and technological progress in 1985. The laboratory is mainly used to carry out the experimental research of hydrodynamic performance, cavitation, exciting force and noise of various types ship propellers, hydrofoils and revolving bodies. The cavitation tunnel is the main equipment, which is 10m high and 11m wide, and has a test section with a length of 2m, a diameter of 0.6m, a top water flow velocity of 15m/sec and a minimum cavitation number of 0.2. The tunnel is equipped with a computer control and measurement system, a dynamometer motor noise control system, oblique dynamometers as well as single component and six component balances. 

Since its establishment, the laboratory has been used to carry out extensive research work for the development of military and civil ship propellers, including low noise large oblique propeller, controllable pitch propeller, duct propeller, contra-rotating propeller, channel propeller, aerial propeller and torpedo, and achieved a large number of valuable research achievements. The laboratory is also used to carry out theoretical research on the performances of ship propellers, especially special propellers such as contra-rotating propeller and pump jet so as to develop the corresponding numerical computing and design programs.  

The Cavitation Tunnel Laboratory was removed and rebuilt in 2010. The new laboratory is located on Minhang Campus of Shanghai Jiao Tong University and has low turbulence intensity, low background noise environment, and high precision control and measurement capabilities that can satisfy the requirements for the technical level and environment protection of underwater ship combat and the requirements for low shock excitation, low noise propulsion devices of military and civil ships and underwater vehicles.    

Main parameters: 

Total width: 28.2m; total height: 13.5m

Test section: length, 6.1m; cross section area, 1m×1m (with a 0.1m radius round angle); flow velocity, 1m/s ~ 15m/s; flow velocity unevenness, ≤1%; turbulence intensity, ≤0.5%; absolute state pressure, 25kPa ~ 300kPa.

esearch scope:

1) Model test research on the hydrodynamic force, cavitation, exciting force and radiation  noise of military and civil ship propellers such as single propeller, duct propeller, pod, contra-rotating propeller and pump jet; and simulation of stem nonuniform flow fields by ship model, false body and grid;

2) Model test research on the hydrodynamic force, cavitation, exciting force and radiation  noise of hydrofoils, high speed underwater vehicles and shop attachments;

3) Fundamental research on fine flow field, cavitation mechanism, size effect, etc.