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J Korean Soc Environ Eng > Volume 38(1); 2016 > Article
J Korean Soc Environ Eng 2016;38(1): 25-33. doi: https://doi.org/10.4491/KSEE.2016.38.1.25
CFD 모사 기법을 이용한 유입 유량에 의한 연속 완전혼화 반응조 수리거동 고찰에 관한 연구
이영주1, 오정익2, 윤석민3, 김종오3, 박노석3
1K-water 연구원 상하수도연구소
2LH 연구원
3경상대학교 건축도시토목공학부 및 공학연구원
CFD Simulation of the Effects of Inlet Flow rate on Hydraulic Behavior in Continuous Stirred-Tank Reactor (CSTR)
Young Joo Lee1, Jeong Ik Oh2, Sukmin Yoon3, Jong-Oh Kim3, No-Suk Park3
1K-water Institute
2LH Institute
3Division of Architectural, Urban and Civil Engineering and Engineering Research Institute, Gyeongsang National University
Corresponding author  No-Suk Park ,Tel: 055-772-1798, Fax: 055-772-1799, Email: nspark@gnu.ac.kr
Received: January 12, 2016;  Revised: January 21, 2016;  Accepted: January 25, 2016.  Published online: January 31, 2016.
ABSTRACT
This paper describes three-dimensional computational fluid dynamics (CFD) simulation of liquid-liquid flow and transient tracer tests in a full-scale continuous stirred-tank reactor (CSTR) used for drinking water treatment. To evaluate the effects of inlet flow rate on hydrodynamic behavior in the selected CSTR, inlet flow rate was changed from 10% to 100% of the design flow rate. From the results of CFD simulation and analysis, as the inlet flow rate increases, Modal index and β value are increased. Also, Morrill index shows local minimal points in relation to the inlet flow rate, which are observed at 20% and 40% of the design flow. As inlet flow Increases more than 40%, it is shown that Morrill index re-increases to close to ideal CSTR.
Key Words: Computational Fluid Dynamics (CFD), Hydraulic Behavior, Continuous Stirred-tank Reactor (CSTR), Inlet Flow Rate, Morrill Index
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