| Citation: | LI Na, YAN Xu, CHEN Xuheng, et al. Efficient prediction of heat transfer characteristics of compact heat exchangers[J]. Journal of Aerospace Power, 2025, 40（6）：20230811 doi: 10.13224/j.cnki.jasp.20230811
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The research focused on the flow heat transfer characteristics and efficient calculation methods in compact heat exchangers. To achieve the research objectives, a fast calculation method for the temperature distribution of a compact heat exchanger based on the porous media theory was established. The heat transfer models of the staggered tube bundle of the pre-cooler configuration for the reference ATREX engine and the involute spiral tube bundle pre-cooler configuration for the SABRE engine were analyzed for performance, respectively. The corresponding methodology and procedure for rapid calculation of heat transfer performance were established. The results showed that the prediction results were consistent with the FLUENT 3D tube bundle model simulation results but the time consumed was less than 1% of CFD simulation. The advantages of the fast prediction method in terms of calculation cost and speed were demonstrated.
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