Numerical optimization design of vortex diode hydrodynamic cavitation reactor

Abstract

Vortex diode is a novel hydrodynamic cavitation reactor, whose cavitation energy yield can be about 3∼8 times higher than the conventional ones. In this study, the numerical orthogonal experiment of the structure(Diameter of the chamber(D), Ratio of the diameter of the chamber to the diameter of axial tube(D/dc), and Ratio of the Diameter of the chamber to the height of the chamber(D/H) ) of vortex diode was carried out and the importance of the impedance ratio influence factor is: D>D/dc>D/H. The best performance was achieved when D=120mm; D/dc=5.0; D/H=5.0.Under the same conditions, the optimal value of D/H is in the range 5∼5.5 and the D/dc is in the range 4.0 ∼ 4.5.The impedance ratio was increased lightly and the flowrate was improved distinctly when we contracted the inlet and outlet of the axial and tangential tube.