Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/w8030084 |
Investigation of Temperature Dynamics in Small and Shallow Reservoirs, Case Study: Lake Binaba, Upper East Region of Ghana | |
Abbasi, Ali1; Annor, Frank Ohene1,2; van de Giesen, Nick1 | |
通讯作者 | Abbasi, Ali |
来源期刊 | WATER |
ISSN | 2073-4441 |
出版年 | 2016 |
卷号 | 8期号:3 |
英文摘要 | An unsteady fully three-dimensional model of Lake Binaba (a shallow small reservoir) in semi-arid Upper East Region of Ghana has been developed to simulate its temperature dynamics. The model developed is built on the Reynolds Averaged Navier-Stokes (RANS) equations, utilizing the Boussinesq approach. As the results of the model are significantly affected by the physical conditions on the boundaries, allocating appropriate boundary conditions, particularly over a water surface, is essential in simulating the lake’s thermal structure. The thermal effects of incoming short-wave radiation implemented as a heat source term in the temperature equation, while the heat fluxes at the free water surface, which depend on wind speed, air temperature, and atmospheric stability conditions are considered as temperature boundary condition. The model equations were solved using OpenFOAM CFD toolbox. As the flow is completely turbulent, which is affected by the complex boundary conditions, a new heat transfer solver and turbulence model were developed to investigate the spatial and temporal distribution of temperature in small and shallow inland water bodies using improved time-dependent boundary conditions. The computed temperature values were compared with four days of observed field data. Simulated and observed temperature profiles show reasonable agreement where the root mean square error (RMSE) over the simulation period ranges from 0.11 to 0.44 degrees C in temporal temperature profiles with an average value of 0.33 degrees C. Results indicate that the model is able to simulate the flow variables and the temperature distribution in small inland water bodies with complex bathymetry. |
英文关键词 | semi-arid region RANS turbulence heat transfer small water body temperature dynamics OpenFOAM |
类型 | Article |
语种 | 英语 |
国家 | Netherlands ; Ghana |
收录类别 | SCI-E |
WOS记录号 | WOS:000373691200008 |
WOS关键词 | THERMAL STRATIFICATION ; WATER-TEMPERATURE ; CLIMATE MODEL ; HEAT-BALANCE ; FLOW ; SIMULATION ; CIRCULATION ; PREDICTIONS ; EVAPORATION ; VEGORITIS |
WOS类目 | Water Resources |
WOS研究方向 | Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/196759 |
作者单位 | 1.Delft Univ Technol, Fac Civil Engn & Geosci, Water Resources Sect, Stevinweg 1, NL-2628 CN Delft, Netherlands; 2.Kwame Nkrumah Univ Sci & Technol, Dept Civil Engn, Kumasi, Ghana |
推荐引用方式 GB/T 7714 | Abbasi, Ali,Annor, Frank Ohene,van de Giesen, Nick. Investigation of Temperature Dynamics in Small and Shallow Reservoirs, Case Study: Lake Binaba, Upper East Region of Ghana[J],2016,8(3). |
APA | Abbasi, Ali,Annor, Frank Ohene,&van de Giesen, Nick.(2016).Investigation of Temperature Dynamics in Small and Shallow Reservoirs, Case Study: Lake Binaba, Upper East Region of Ghana.WATER,8(3). |
MLA | Abbasi, Ali,et al."Investigation of Temperature Dynamics in Small and Shallow Reservoirs, Case Study: Lake Binaba, Upper East Region of Ghana".WATER 8.3(2016). |
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