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The Distribution of Chironomids by flow Mechanisms - Numerical Computation -  

Lee, Sang-Ho (Department of Civil and Construction Engineering, Pukyung National University)
Lee, Jung-Min (Department of Civil and Construction Engineering, Pukyung National University)
Kim, Tae-Won (Department of Water Resources, Websolus Co., Ltd.)
Park, Jong-Pyo (Department of Water Resources, Websolus Co., Ltd.)
Publication Information
Journal of Korean Society on Water Environment / v.22, no.1, 2006 , pp. 159-165 More about this Journal
Abstract
Numerical simulation of turbulence flow in a circulating channel was performed. The RNG $k-\varepsilon$ model and Reynolds stress model of the FLUENT was used for evaluating the flow mechanisms. The simulation results were compared with the experimental data measured by a ADV (Acoustic Doppler Velocitmeter). The distribution of chironomids was analyzed by the computational results. They distributed at the region of lower velocities and lower turbulence intensity. In the case of a hemisphere structure being located on the straight section, chironomids lived in the upstream and downstream area of the hemisphere. The secondary currents also affected the distribution of chironomids. In conclusion, the computational fluid dynamic techniques can be inexpensively applied for analysing the relationship between flow characteristics and distribution of benthic macroinvertebrates.
Keywords
Chironomid; FLUENT; RNG $k-\varepsilon$ model; Secondary flow; Turbulence intensity;
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  • Reference
1 Naiman, R. J. and Bilby, R. E., River Ecology and Management, Springer, pp. 345-376 (1998)
2 한국건설기술연구원, 국내 여건에 맞는 자연형 하천 공법의 개발, 환경부, pp. 85-100 (1998)
3 Dernuren, A. O. and Rodi, W., Calculation of Flow and Pollutant Dispersion in Meandering Channels, Journal of Fluid Mechanics, 172, pp. 63-92 (1986)   DOI   ScienceOn
4 Statzner, B., Gore, J. A. and Resh, V. H., Hydraulic Stream Ecology: Observed Patterns and Potential Applications, Journal of the North American Benthological Society, 7(4), pp. 307-360 (1988)   DOI   ScienceOn
5 Callander, R. A., River meandering, Annual Review of Fluid Mechanics, 10, pp. 129-158 (1978)   DOI   ScienceOn
6 노성진, CFD를 이용한 장방형 침전지내 흐름의 수치모의, 서울대학교 석사학위논문 (2001)
7 Freitas, C. J., Perspective: Selected Benchmarks from Commercial CFD Codes, Transactions of the ASME, 117, pp. 208-218 (1995)
8 Fluent Incorporated, FLUENT User Guide, Centerra Resources Park, 10 Cavendish Court, Lebanon, NH 03766 (1998)
9 Leschziner, A. and Rodi, W., Calculation of Strongly Curved Open Channel Flow, Journal of Hydraulic Division, ASCE, 105(10), pp. 1297-1314 (1979)
10 Armitage, P. D., Cranston, P. S. and Pinder, L. C. V., The Chironomidae, Chapman and Hall, pp. 341-364 (1995)