| Title |
The Experimental Study of Water Hammer by Valve Closure in Water Supply Piping System |
| Keywords |
Water hammer ; 수격현상),Valve closure ; 밸브폐쇄 ; Pressure wave propagation speed ; 압력파 전파속도 ; Pressure rise ; 압력상승 |
| Abstract |
This study is to investigate the pressure wave characteristics and the maximum pressurerise generated by instantaneous valve closure at the end of the straightening copper piping system. Experiments were conducted under the followingconditions : initial pressure 1∼5 bar, flow velocity 0.6∼3.0 m/s and water temperature 20℃. Results indicated that the peak pressure generated by quick valve closure reachedJoukowsky's value. And we also found that the maximum pressure rise and the pressure history were depended on not only closing time but also flow velocity. |