Drop Type Bottom Flow Design Theory And Method Of Research

Before the1970s, our cancellation can scour study mainly take a regular energy dissipation. While the choice of dissipation, according to the General layout, topography, geology, hydrology, construction and operating conditions determine.Along with the rapid development of hydropower projects, in particular the Western development strategy was implemented, hydropower as Western important resources and Western development focus areas, been highly valued, as countries to speed up the pace of development of hydropower, hydropower development has made great achievements, research on the structure has entered a new phase. In recent years, high water, large discharge works more and more, high speed water discharge of cavitation, abrasion, vibration, pulsating effect on building more and more researchers in water sector. How to reduce a high speed water flow to the outlet works produces destruction has become the focus of the study. High-speed flow cancellation of destruction was mainly due to its reached the soleplate while the higher end of velocity, causing the Pro Stilling of empty destroys and due to the flow of pulse a backplane structure.Based on the traditional dissipation, this paper through step-down dissipation workers dissipation mechanism, backplane pressure distribution and Pro base Velocity distribution can, find out the impact of Stilling pool water hydraulic properties in major factor:-sill depth, into the pool and into the pool energy. And on these three factors separate change to Stilling pool flow pattern, backplane pressure distribution and Pro base Velocity distribution impacts of theoretical analysis was conducted. Both numerical simulation methods on the step-down dissipation workers Stilling pool flow simulation calculation, cancellation of pool flow pattern, backplane pressure distribution and Pro base Velocity distribution. Through numerical simulation and testing of the hydraulic model compared, a numerical simulation methods to study the step-down dissipation workers Stilling pool hydraulic characteristics of effective means, as a practical step-down dissipation of design.