Numerical study on flow and heat transfer characteristics of supercritical methane in microchannels with airfoil fins

IF 3.4 3区工程技术 Q2 CHEMISTRY, PHYSICAL

Journal of Supercritical Fluids Pub Date : 2025-03-17 DOI:10.1016/j.supflu.2025.106596

Chenchen Zhao , Yue Wang , Liu Yang , Bin Zhao , Qian Li , Weihua Cai

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引用次数: 0

Abstract

In order to study the thermal and flow properties of interstage coolers in the liquefaction of methane process, numerical analyses were carried out on methane flow within a printed circuit heat exchanger (PCHE) with airfoil fins. A geometry model was developed in this research to include staggered microchannels with airfoil fins. The SST k-ω turbulence model was utilized in the analysis of how various operating parameters, including inlet flux, outlet pressure and inlet temperature, impact flow and thermal characteristics. It was found that higher inlet temperatures result in improved thermal feature but are also associated with increased resistance. Conversely, higher outlet pressure conditions led to better overall flow and thermal feature. Furthermore, the impact of airfoil fins on flow characteristics was studied, considering factors such as secondary flow intensity and entropy generation. Correlations for Fanning frictional factor and Nusselt number were developed with a margin of error within ± 3.5 %. These research findings are intended to benefit the design and optimization of PCHEs featuring airfoil fins microchannels for applications.

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来源期刊

Journal of Supercritical Fluids 工程技术-工程：化工

CiteScore

7.60

自引率

10.30%

发文量

236

审稿时长

56 days

期刊介绍： The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics. Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.