A new device used in selective withdrawal from reservoirs and its effectiveness verified in computational fluid dynamics

作者：Jinsuo Lu^*; Wei Zhang; Dengyu Wang; Xiaoyi Wang

来源：International Journal of Online Engineering, 2018, 14(3): 142-151.

DOI：10.3991/ijoe.v14i03.8421

• Baffle
• Baffle length
• Computational fluid dynamics modeling
• Flow distribution
• FLUENT
• Selective withdrawal
• Source waters
• Withdrawal layer thickness

Water intake with fixed height limits the application of selective withdrawal technology in a certain degree. This study proposes a technological idea to install baffles on water intake. Through the rotation of upper and lower baffle, poor water layer can be blocked. A Computational Fluid Dynamics (CFD) model for the upper baffle on water intake is constructed. The results show that the baffle installed on the upper part of orifice can reduce the withdrawal layer thickness and flow on the upper part of orifice centre. Thereby, the withdrawal flow on lower part can be indirectly increased. While, baffle length and inclining angle are the important factors to influence the withdrawal layer thickness and flow distribution. Therefore, the adjusting range of selective withdrawal can be economically enhanced by installing baffles on water intake.

• 出版日期2018