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사각채널내의 열교환 촉진제의 형상에 따른 영향에 관한 수치해석 연구
정한식(Hanshik Chung),우주식(Jusik Woo),라빕(Muhammad Nuim Labib),전유신(Yousin Chun),정효민(Hyomin Jeong) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
A numerical simulation for studying fluid flow and heat transfer characteristics in a square channels with thermal enhancements are investigated in the present study. The square duct has a length 300㎜ and height 30㎜ square thermal enhancements are attached in the bottom and top walls. The thermal enhancements with different height and shape have been used in the current study. To Calculate the heat transfer, k-omega SST model. The numerical results have also checked with available Theoretical relations Good agreements has achieved.
판형열교환기 Chevron각 변화에 따른 유동현상 수치해석
정효민(Hyomin Jeong),김성수(SeongSoo Kim),정한식(HanShik Cheng),전유신(YouSin Chun),최현근(HyunGun Choi) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
Numerical analysis was carried out to examine the heat transfer and pressure drop characteristics of Plate Heat Exchanger(PHE) for absorption using Computational Fluid Dynamics(CFD) techniques. The Thermal performance and pressure drop are investigated. The computational model is a tree-dimensional narrow channel with angled triangular undulations. Geometric condition of PHE was port size 25㎜, channel plates area 3,465 ㎟. The main operating conditions in PHE, were taken a various Reynolds munber(from 1000 to 8000). The optimum flow pattern were presented with variation of pressure drop.