Research on Multi-Optimal Project of Outlet Guide Vanes of Nuclear Grade Axial Flow Fan Based on Sensitivity Analysis

Nuclear grade axial flow fans are widely used in nuclear power plants for ventilation and heat dissipation have the advantages of high efficiency rates. A fan with OGVs (outlet guide vanes) can recover kinetic energy dynamic impeller outlet winding to increase ventilator pressure, thus improving efficiency; therefore, play an essential role performance fan. Based on accurate numerical simulations, MRGP approximation model was developed analyse factors affecting duct optimise vane structure, combined Sobol method sensitivity analysis. The experiments simulations show that total pressure optimised increases by 154 Pa, noise decreases 4.1 dB. multi-objective optimisation using parametric approach combining it is highly reliable. It provides a key design direction optimising fans.