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Shape Optimization of Internally Finned Tube with Helix Angle  

Kim, Yang-Hyun (Department of Architectural Equipment, Chosun College of Science & Technology)
Ha, Ok-Nam (Department of Mechanical Engineering, Chosun University)
Lee, Ju-Hee (Department of Mechatronics Engineering, Hoseo University)
Park, Kyoung-Woo (Department of Mechanical Engineering, Hoseo University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.19, no.7, 2007 , pp. 500-511 More about this Journal
Abstract
The Optimal solutions of the design variables in internally finned tubes have been obtained for three-dimensional periodically fully developed turbulent flow and heat transfer. For a trapezoidal fin profile, performances of the heat exchanger are determined by considering the heat transfer rate and pressure drop, simultaneously, that are interdependent quantities. Therefore, Pareto frontier sets of a heat exchanger can be acquired by integrating CFD and a multi-objective optimization technique. The optimal values of fin widths $(d_1,\;d_2)$, fin height(h) and helix angle$(\gamma)$ are numerical1y obtained by minimizing the pressure loss and maximizing the heat transfer rate within ranges of $d_1=0.5\sim1.5mm$, $d_2=0.5\sim1.5mm$, $h=0.5\sim1.5mm$, and $\gamma=0\sim20^{\circ}$. For this, a general CFD code and a global genetic algorithm(GA) are used. The Pareto sets of the optimal solutions can be acquired after $30^{th}$ generation.
Keywords
Internally finned tube; Helix angle; Periodic flow/thermal field; Multi-objective genetic algorithm; Pareto set;
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Times Cited By KSCI : 2  (Citation Analysis)
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