Entry angle at a line sink during withdrawal from a two-layer flow |
| |
Authors: | Shaohua Marko Hsu Chien-Jung Liu Wei-Sheng Yu |
| |
Affiliation: | 1. Department of Water Resources Engineering and Conservation, Feng Chia University, 100 Wen-Hua Road, Taichung 407, Taiwan;2. Institute of Civil and Hydraulic Engineering, Feng Chia University, 100 Wen-Hua Road, Taichung 407, Taiwan;3. Department of Multimedia and Game Science, Chungyu Institute of Technology, 40, Yi 7th Road, Keelung 201, Taiwan |
| |
Abstract: | A rectangular flume with dimensions of length 180 cm, height 60 cm and width 20 cm was used to observe the entry angle (i.e. angle between the interface and the centerline of the slot) of a two-layer flow withdrawal by a line sink. Saline water was used to form a bottom density current and red dye was applied. Based on the experimental data, one could see that the dimensionless discharge is more influential on the entry angle than the depth-averaged concentration of the lower-layer flow. Thus, the influence of concentration on experimental conditions is negligible for evaluation of the entry angle. The absolute values of entry angles increase with the absolute values of the dimensionless discharge. Almost all absolute values of the theoretical angle are bigger than that of the measured angle with a deviation bounded within 0.15 rad. The influence on the entry angle from the dimensionless discharge is symmetrical between the drawdown curve (interface above the slot) and the suck-up curve (interface below the slot). This phenomenon can be seen from a simplified form of a theoretical formula. |
| |
Keywords: | Selective withdrawal Entry angle Two-layer flow Dimensionless discharge |
本文献已被 ScienceDirect 等数据库收录! |
|