Browse > Article

Numerical Study on the Ventilation Effect in the Boiler Building  

Kim, Chul Hwan (Dept. of Mechanical Design and Manufacturing Engineering, Changwon National University)
Yoo, Geun Jong (Dept. of Mechanical Design and Manufacturing Engineering, Changwon National University)
Choi, Hoon Ki (Dept. of Mechanical Design and Manufacturing Engineering, Changwon National University)
Publication Information
Journal of Korean Society of Occupational and Environmental Hygiene / v.15, no.3, 2005 , pp. 239-249 More about this Journal
Abstract
Ventilation effect is analyzed for boiler building with multiple heat sources. Air flow inside the boiler building is characterized as turbulent mixed convection. Analysis methodology is set up with two different $k-{\varepsilon}$ type models (standard $k-{\varepsilon}$, RNG $k-{\varepsilon}$). Two different cases with high and low outside temperature are analyzed. In case of high outside temperature condition, mixed convection is well realized inside the boiler building. With different upper louver opening rate, air flow is also well established and proper opening rate is found to meet design limit in case of low outside temperature condition. Difference of analysis results for two different turbulence models are not significant. Therefore, analysis methodology with simple $k-{\varepsilon}$ turbulence model is found to be reliable for the boiler building ventilation analysis. However, more simplified geometrical model is desired to expand its application.
Keywords
ventilation; boiler building; numerical analysis; $k-{\varepsilon}$ model;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Chen Q. Comparison of Different k-$\epsilon$ Models for Indoor Air Flow Computation. Numerical Heat Transfer 1995;28:353-369   DOI
2 김철환, 유근종 최훈기, 공영경, 최유송, 환기현상의 수치적 해석을 위한 난류모델의 영향에 관한 연구. 대한기계학회 2005춘계학술대회;2965-2970
3 Zhang W, Large eddy simulation of airflow with a filtered dynamic subgrid scale model. Int. Heat Mass Transfer 2000,43:3219-3231   DOI   ScienceOn
4 Launder BE, Spaldlng DB. The Numerical Computation of Turbulent Flows. Compter methods in Applied Mechanics and Engineering 1974;3:269-289   DOI   ScienceOn
5 CostaJJ, Oliveira LA, Blay D. Test of several versions for k-$\epsilon$ type turbulence modeling of internal mixed convection flows. Int. J. Heat and Mass Transfer 1999;42: 439 1-4409
6 Chen Q. Prediction of Room Air Motion by Reynolds-Stress Models. Building and Environment 1996,31 :233-244   DOI   ScienceOn
7 Yakhot V, Orszag SA. Renormalization Group Analysis of Turbulence:I. Basic Theory. J.Scientific Computing 1986;1(1): 1-51   DOI
8 Blay D, Mergui S, Niculae C. Confined turbulent mixed convection in the presence of a horizontal buoyant wall jet. ASME Fundamentals of Mixed Convection 1992:213:65-72