| Title |
Analysis of Water Storage Tank Flowfield using Computational Fluid Dynamics (CFD) Simulation |
| Authors |
최연우 ( Yeon-woo Choi ) ; 한민수 ( Min-su Han ) ; 송준혁 ( Jun-hyuck Song ) ; 왕창 ( Chang-keun Wang ) |
| DOI |
https://doi.org/10.15681/KSWE.2018.34.2.173 |
| Keywords |
CFD; Dead water; Screw nozzle; Water management; Water storage tank |
| Abstract |
Reservoirs, facilities to store water, are being used in several fields for their ability to hold back a large quantity of water for a long time before the water is actually used. However, at the same time, the reservoirs are considered to have a flaw: the longer they store water, the more the quality of water in these reservoirs deteriorates. Further, when the reservoirs are large, they are more likely to have dead-water regions in out-of-the way spots far from either an in-current or an ex-current canal. This study conducted a Computational Fluid Dynamic (CFD) simulation and tried to figure out the internal flow inside each of the reservoirs with different in-current canals built by the multiple hoe screw nozzle method and the drop in-current method. The drop in-current method is more frequently used. According to the analysis of the internal flow inside each reservoir with the different methods applied, we found that the reservoir with the drop in-current canal would have two rotary currents in the lower region of the reservoir and that the velocity of flow would decrease. For a reservoir with the screw nozzle method, a single rotary current occurred, and inside the reservoir, regardless of height, the current turned out to flow in a regular manner. |