Open Surface Water Tunnel

Introduction

Due to the importance of hydrodynamic phenomena in marine sciences and other applications, the free surface water tunnel of Babol Noshirvani University of Technology was designed and built by the researchers of the research laboratory of hydrodynamics, acoustics and marine propulsion of this university. In the above water tunnel, the ability to test semi-submerged propellers in different advance coefficients, submergence ratio, shaft deviation angle and yaw angle is provided.

Examples of this water tunnels applications in various research fields include research on propellers, research on the principles of cavitation, research on cavitation related to submerged bodies, research related to cavitation similarity, etc.

Dynamometer

One of the most important components of the tunnel is the dynamometer, which is designed to measure the hydrodynamic forces on the rotating propeller. The task of the dynamometer is to transfer the engine power to the propeller and at the same time, measure the thrust force and torque produced in the propeller. The two-component dynamometer designed by the researchers of the Hydrodynamics, Acoustics and Marine Propulsion Research Laboratory of Babol Noshirvani University of Technology, has the ability to measure thrust and torque forces at different angles of shaft deviation, yaw angle and draft ratio.

Free-surface Water Tunnel Capabilities

* The possibility of reaching a maximum speed of 5 m/s in the test section      

* The possibility of testing semi-submerged propellers and obtaining hydrodynamic coefficients

* The possibility of simulating the flow around the propeller

* High quality video recording capability

* Ability to record and analyze data with LabView software

Services provided by the expert team

* Design and manufacture of the propeller model

* Testing the propeller model in the water tunnel

* Extracting test data with LabView software

* Data analysis and reporting