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CFD Investigation of the Flow Phenomena inside the Multistage Mechanical Vapor Compressor
Muhammad Nuim Labib,Jusik Woo(우주식),Duyol Choi(최두열),Hanshik Chung(정한식),Hyomin Jeong(정효민) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Mechanical vapor compressor is a part of steam compressor employed in multi effect distillation process. A greater understanding of flow phenomena inside of mechanical compressor plays an important role when the performance improvement of overall system in MED desalination is necessary. In this paper, the mechanical compressor was numerically investigated to study the influence of operating condition. The steady numerical simulation using k- ε turbulent model with frozen rotor interface was used for multistage centrifugal compressor simulation. In this simulation using three section zones and only single passage on each stage is considered to reduce the computational cost and time consuming. This study is just only focused on the influence of operating pressure. From the simulation result shows a good understanding about the optimum operating condition even though using steady simulation.
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.