Перегляд за Автор "Ahmed, Dalal"

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    Computational Investigation: CFD guide for the Evaporation process in Heat Pipe
    (Igor Sikorsky Kyiv Polytechnic Institute, 2025) Ahmed, Dalal; Mahmood, Raid
    Heat pipes are essential components in various industrial applications due to their exceptional heat transfer capabilities, which significantly enhance thermal management systems. Their ability to efficiently dissipate heat with minimal temperature gradients makes them invaluable in electronics cooling, aerospace systems, and energy recovery processes. This study presents a detailed two-dimensional Computational Fluid Dynamics (CFD) simulation to analyze the temperature distribution and phase change dynamics during evaporation within a heat pipe. The simulation is conducted using ANSYS Fluent, where a 2D model of the heat pipe is developed, and an optimized computational mesh is generated to ensure accuracy in the numerical results. The k-ε turbulence modelis employed to accurately capture the fluid flow behavior, accounting for the complex interactions between vapor and liquid phases. The working fluid selected for this investigation is a nanorefrigerant (Al2O3/R11), chosen for its enhanced thermal properties that contribute to improved heat transfer efficiency. The simulation results reveal a significant temperature gradient in the evaporator section, highlighting the critical role of heat flux in determining thermal resistance. Additionally, the study examines how variations in heat input influence the overall thermal performance of the heat pipe. The findings from this CFD analysis provide valuable insights into the evaporation process, which is driven by phase change phenomena, and offer practical designguidelines for optimizing heat pipe performance. By understanding the intricate relationship between fluid dynamics, heat transfer, and material properties,this research significantly contributes to the development of more efficient and sustainable thermal management solutions for industrial applications