Heat Transfer and Numerical Methods
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Abstract
Abstract
Heat transfer-related theories are crucial in practical engineering manufacturing processes, particularly in designing heating system and mechanical structures. This paper explores how convective heat transfer and fluid dynamics could be specifically related by demonstrating the proportional relation between the velocity of moving fluid and the rate of change in temperature of heat-conductive metal as the result of the heat effect by the fluid. A theoretical model for velocity-dependent expression is developed based on Nusselt, Reynolds and Prandtl's number, associated with Newton's Law of Cooling. An experiment is conducted using a hair dryer with different air speed settings, which are applied to a hollow stainless-steel metal ball, with 3 trials of data completed and recorded by a K-type thermocouple. The result demonstrates that higher fluid velocity leads to faster change in rate of temperature. This paper provides fundamental knowledge for engineering designs and applications like heat exchange systems and material selections for metal components.
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@article{Zhao2026Analysis,
title = {Analysis of Relationship Between the Rate of Temperature Change of Heat-Conductive Metal and the Velocity of Fluid Through Convective Heat Transfer Process},
author = {Yu Zhao},
journal = {Theoretical and Natural Science},
year = {2026},
doi = {10.54254/2753-8818/2026.gl35281},
url = {https://doi.org/10.54254/2753-8818/2026.gl35281}
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