高温熔盐恒温槽温度场的数值模拟OA

To address the issue of poor temperature field uniformity in the working area of existing high-temperature molten salt thermostatic baths,high-temperature molten salt is used as the fluid medium.The standard k-ε turbulence model is employed,and proportional integral derivative(PID)control is applied to the temperature regulation of the thermostatic bath using the UDF function in FLUENT.Computational fluid dynamics(CFD)simulations are performed to study the impact of the agitator and its layout on the flow field distribution and temperature field uniformity in the working area of the high-temperature molten salt thermostatic bath.The results show that the addition of an agitator creates a distinct circulation flow within the thermostatic bath,accelerating the mixing and heat transfer between the high and low-temperature molten salts.This improves the temperature field uniformity in the working area from 11.708 92 K to 0.082 33 K.Additionally,using an upper agitator structure effectively improves the uneven velocity distribution in the working area,enhancing the temperature field uniformity to 0.039 49 K.