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Title of Journal: J Mech Sci Technol

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Abbravation: Journal of Mechanical Science and Technology

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Korean Society of Mechanical Engineers

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DOI

10.1016/0009-8981(84)90153-0

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ISSN

1976-3824

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A numerical prediction on the reduction of microor

Authors: Chan Li Baoqing Deng Chang Nyung Kim
Publish Date: 2010/07/20
Volume: 24, Issue: 7, Pages: 1465-1473
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Abstract

This paper investigates the three dimensional flow field and organism concentration in a UV disinfection channel The modified P1 model is newly adopted to solve the UV intensity field This modified P1 model for radiative transfer can yield an accurate light intensity for even complicated geometries The effect of UV light intensity on the disinfection of microorganisms has been considered in the species equation Differently from existing literatures this study has used the Euler method for the calculation of both the flow field and the concentration of organisms The CFD modeling results are compared with existing experimental data 1 for a UV channel which shows outstanding agreement The effects of inlet velocity absorption coefficients of lamps quartz and water on the disinfection efficiency are investigated With a smaller inlet velocity and smaller absorption coefficients higher disinfection efficiency has been obtained The current CFD model has the capability to predict the performance of UV disinfection channelsChang Nyung Kim is a full professor of the Department of Mechanical Engineering College of Engineering Kyung Hee University in the Republic of Korea His research focuses on computational fluid dynamics microfluidic flow heat transfer biomechanics and environmental fluid mechanics

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