Flow through a hexagonal mixing grid with parabolic vanes measured experimentally by PIV in two planes at distances 1 and 5 × the maximum inscribed diameter D at Reynolds number based on D of 1.5⋅104, 3.1⋅104 and 6.2⋅104
Experimental analysis reveals flow patterns in a nuclear reactor mixing grid, indicating low Reynolds number dependence and significant downstream effects.
Key Points
The flow shows low dependence on Reynolds number while demonstrating significant changes depending on downstream distance.
Spatial maps of mean velocity, turbulence intensity, and turbulence flatness have been presented, contributing to flow understanding.
Using particle image velocimetry, flow patterns through the mixing grid were analyzed at various distances from the grid.
Experimental findings underscore the impact of mixing vanes on the characteristics of the flow and its resultant jets and wakes.