A study of unsteady heat transfer in a fin subjected to periodic boundary conditions
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Từ khóa:
Fins
periodic boundary
rectangular fin
fin efficiency
nonlinear heat transfer
Tóm tắt
A numerical model was developed based on the finite difference method (FDM) to solve the transient heat transfer problem through a fin with periodic oscillating boundary conditions. The model was validated against a previous study and demonstrated excellent agreement. It was applied to investigate the effect of thermal oscillating boundaries on the temperature distribution and thermal efficiency of the fin under unsteady conditions. The results showed that the temperature distribution and thermal efficiency nearly reached a steady oscillation after just the first cycle for small values of parameter M, and the difference between the first and subsequent cycles gradually decreased as M increased. The model developed in this study can be applied to research on practical fin applications with nonlinear thermal boundary oscillations, such as solar energy collectors, heat sinks in electronic devices, and internal combustion engines.
Tài liệu tham khảo
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Hung, H. N. “A Study of Unsteady Heat Transfer in a Fin Subjected to Periodic Boundary Conditions”. Tạp Chí Khoa học Và Công nghệ - Đại học Đà Nẵng, vol 23, số p.h 10B, Tháng Mười 2025, tr 13-17, doi:10.31130/ud-jst.2025.23(10B).629E.
