Free and Forced Vortices — MOE Lab Tender Details

Free and Forced Vortices for Fluid Mechanics Engineering Lab Equipments

The Equipments should be provided with three interchangeable orifices and paddle wheel to fit in base of tank  
Provision to measure bridge with adjustable pointers and internal caliper to measure vortex dimensions  
The equipments should supply with Pitot tubes for estimation of velocities in vortex  
Quick release fittings for easy connection to hydraulics bench  
Tank diameter shall not exceed 245mm   
Height to over flow point should not exceed 180mm   
Orifice diameters shall be exactly at 8,16 & 24mm  
Distance from center: 0, 30, 50, 70, 90 and 110mm   
The system with Pitot tubes should have measuring point at 15, 25 and 30mm radius   
Inlet tubes Diameter should be 9 and 12.5mm  
The Hydraulic bench shall be designed as a portable and self contained service module  
The bench shall be constructed from light weight corrosion resistant plastic with wheels for mobility  
The bench consist of centrifugal pump with maximum head of 21m water and maximum flow of 1.35 litres/sec  
The motor rating shall be 0.37KW  
The sump tank capacity shall be 250 litres with high flow volumetric tank of 40 litres and low flow volumetric tank of 6 litres  
The Height of working surface shall be 1 metre above floor level  
The bench shall comprises of stilling baffle which reduces turbulence and a remote sight tube with scale gives an instantaneous indication of water level   
A dump valve operated by a remote actuator should help  to drain measured volume of water to the sump in the base of the bench for recycling purpose