What methods are available for optimising the startup of stainless steel high-temperature fan blades?

What methods are available for optimising the startup of stainless steel high-temperature fan blades?

Currently, the drive system of stainless steel high-temperature fans is optimised using separated aerodynamics, whilst the original blade arc was optimised to improve the adiabatic efficiency of the impeller. Three different optimisation approaches were implemented, the results of which were compared, and analysed using a univariate method. Following optimisation, the adiabatic efficiency was improved to varying degrees, effectively mitigating flow separation, reducing flow losses, and improving flow conditions to varying extents. This indicates that numerical aerodynamic optimisation methods are effective in enhancing the aerodynamic performance of the blades, with different optimisation methods yielding different results. This demonstrates that the parametric approach and the selection of the operating point have a significant impact on the optimisation. The results were effective, achieving the optimised design of the stainless steel high-temperature fan. Firstly, theoretical methods were employed to parameterise the stainless steel high-temperature fan, utilising its geometric model and software to calculate the internal flow field of the fan. Through simulation analysis, key factors influencing the performance of the stainless steel high-temperature fan were identified. The fan was optimised by altering certain key geometric parameters, and numerical simulations of the centrifugal fan were conducted to improve the fan’s efficiency and address factors affecting its performance. On this basis, taking into account the influence of gas viscosity, the original disc shape design was revised. After applying the new convoluted cable to the original fan, numerical simulations were conducted again; the experimental results indicate an improvement in performance. The experimental results demonstrate that the internal flow field of the stainless steel high-temperature fan has been optimised, and the efficiency of the centrifugal fan has been improved. The aerodynamic performance of several different blade fan types was compared. Flow field calculations were performed on the propeller and flow surfaces. The influence of different blade types on the pressure curve shape at the point of maximum pressure and the efficiency of the stainless steel high-temperature fan was analysed, along with the practical engineering values of these blade types. Consequently, the operating parameters for the specific adaptation scheme were set to verify the performance requirements of the test results.