The main goal of this study is to achieve the extended operating life of the rotary regenerative air pre-heater (Ljungström) of Bandar Abbas power plant by modifying operational parameters by decreasing the corrosion. To achieve this goal, a three-dimensional CFD simulation of the Ljungström is carried out, utilizing the thermal non-equilibrium porous media model. Temperatures are validated against measured data from the power plant with a maximum relative error of 5.54% on the Celsius scale, and mass flow rates are validated with a maximum relative error of −5.25%. The effect of the Ljungström key parameters including the rotational speed, cold layer material, inlet air/flue gas temperature, and mass flow rate, are analyzed in presence of leakages and neglecting it, using porous media approach. The leakage effect is investigated considering radial and axial/peripheral clearances. Finally, a simulation is performed by applying feasible improved parameters extracted from the above analyses considering the effect of all parameters together in presence of leakages, which shows a 6.14% improvement in the Ljungström effectiveness, reducing the total leakage to about one-third of the actual model and eliminating any corrosion.

本研究的主要目标是通过减少腐蚀来修改运行参数，从而延长 Bandar Abbas 发电厂的旋转蓄热式空气预热器 (Ljungström) 的运行寿命。为了实现这一目标，利用热非平衡多孔介质模型对 Ljungström 进行了三维 CFD 模拟。温度根据发电厂的测量数据进行验证，最大相对误差为摄氏 5.54%，质量流量验证的最大相对误差为 -5.25%。Ljungström 关键参数（包括转速、冷层材料、入口空气/烟气温度和质量流量）的影响在存在泄漏和忽略泄漏的情况下使用多孔介质方法进行分析。考虑径向和轴向/周边间隙研究泄漏影响。最后，通过应用从上述分析中提取的可行改进参数进行模拟，考虑所有参数在存在泄漏的情况下的影响，这表明 Ljungström 有效性提高了 6.14%，将总泄漏减少到大约三分之一实际模型并消除任何腐蚀。