| Title |
Characteristics of the Transient Pressure in a Building Water Supply System with an Air Chamber |
| Authors |
황희성 ; 임기원 ; 이광복 ; 조병선 ; 차동진 |
| Keywords |
Water hammer ; 수격 ; Air chamber ; 공기실 ; Building services ; 건축설비 ; Computer simulation ; 컴퓨터 모사 |
| Abstract |
A numerical study has been conducted to characterize the transient pressure in a building water supply system with an air chamber by utilizing a commercial code that employs the method of characteristics. Some results produced for the purpose of verification in the study agree quite well with the previously reported. Several parameters are then varied. Among them are the valve closure time, the wave speed, the static pressure, the polytropic exponent, the air chamber volume, the inner diameter and the shape of orifice in the air chamber, etc, while the water temperature and velocity are kept constant at 20℃ and 0.8 m/s, respectively. Results reported in this parametric study may be useful to understand the unsteady behavior of the system. |