Full text
| |
| Author(s): |
Vivien Luciane Viaro
Total Authors: 1
|
| Document type: | Master's Dissertation |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Civil |
| Defense date: | 2001-04-04 |
| Examining board members: |
Edevar Luvizotto Junior;
Geraldo Lucio Tiago Filho;
José Geraldo Pena de Andrade
|
| Advisor: | Edevar Luvizotto Junior |
| Abstract | |
Hydraulic transient is defined as the transition between two permanent flowing conditions. In this transition, the greatness variation related to the flowing, mainly the pressure, is important to the measuring and exploration of hydraulic installation. Studies about transitory situations and the shuntings that caused them are fundamental to guarantee operational safety of the hydraulic plants in general. The transitory flowing analysis in forced conduits is based on equations of continuity and on the amount of movement. One of the imprecisions related to the conventional modeling is in using a almost-static formulation for the friction term, which is only valid for permanent flowing. This paper compares the results obtained from physical model with the one from the mathematical modeling, considering or not a special modeling for transitory friction term. The models used proposed by Brunone et. al. (1991) and Vardy et. al. (1993), to describe the variable friction term (AU) | |