| Title |
Numerical Simulation of Mean Flows and Turbulent Structures of Partly-Vegetated Open-Channel Flows using the Nonlinear k-ε Model |
| Authors |
최성욱(Choi, Seongwook) ; 최성욱(Choi, Sung-Uk) ; 김태준(Kim, Taejoon) |
| DOI |
https://doi.org/10.12652/Ksce.2014.34.3.0813 |
| Keywords |
부분 식생 개수로 흐름;난류모형;평균흐름;난류 구조;비선형 k-${\varepsilon}$모형 Partly-vegetated open-channel flow;Turbulence model;Mean flow;Turbulence structure;Non-linear k-${\varepsilon}$ model |
| Abstract |
This study focuses on the algae growth restraining. Many researches on a critical damage from algae growth are published, but it is hard to find how th restrain. Abnormal algae increasing is a problem, because it makes red tides, biodeterioration, etc. Therefore this study aims to decrease the damage from algae growth. Some metal ions have been used microorganism killing materials from old times. Especially, Cu ions are highly effective. Based on these uses of the metal ions, a functional mortar which restrains algae growth is developed. The mortar contains soluble glass which dissolve in water. The soluble glass was made of Cu ions and phosphates. When the soluble glass is dissolved, Cu ions are soaked out stably from the soluble glass. Culture mediums which incubate algae were made to evaluate the developed mortar specimens. Culture mediums were filled with fresh water and sea water. Algae were incubated for fourteen days in culture mediums. The evaluating methods are measuring volume of the dissolved organic carbon and the chlorophyll. Using these two measurements, the mortar specimens are judged that can restrain algae or not. According to the result, the functional mortars of culture medium filled with fresh and sea water shows similar trend. The functional mortar for restraining algae growth performs that's role well. |