Excel software automatically generated curve calcu -

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Excel software automatically generated curve calculation formula in the use of reservoir regulation

0562.664-0.142287.44465471.138654.082-0.08271.394-0.256363.10265580.176654.9550.04579.9750.201448.00865689.636656.050-0.05089.727-0. 091542.57365799.494657.072-0.07299.525-0.031 Notes: 1, water level elevation ④ = A 930 161 ((9 / 2000) 6 +803738 * ((9 / 2000) 5-269813 * ((9 / 2000:4 +44678 * ((9 / 2000) 3-3886.8 ((9 / 2000) 2 +207.49 * ((9 / 2000) +645.942, the surface area ⑥ = a 359 137 * (( 9/15oo) 6 +420263 * ((9/15oo) 5-197841 * ((9 / 1500) 4 +49453 * ((9/15oo) 3-7444.1 ((9/15oo) 2 +877.2 ((9 / 1500) +4.6283 above table shows the results of curve formula is very close to the actual, fully meet the accuracy requirements. 3.2 curve calculation formula in the use of reservoir regulation (the switch 37) in Bavaria Technology II 2006 37 * whirlpool and a strong pulse,[link widoczny dla zalogowanych], head fluctuated, less than the design water flow requirements. We know the strong turbulent flow is the particle hydrodynamic pressure fluctuation of the internal factors. hydrodynamic pressure fluctuation size and water flow rate, boundary conditions, and the flow rate the greater the particle turbulent flow more strongly, moving the water the greater the pulse pressure. boundary conditions suddenly change, or streamline requirements do not meet the boundary conditions, will cause the main flow line from the boundary, and the formation of local vortex, whirlpool lower internal pressure, the liquid turbulence is very strong, so that hydrodynamic pressure of the pulse amplitude increased dramatically. As the water flow rate of the larger, boundary conditions suddenly change, not in compliance with the requirements streamlined Therefore, thrown across the border from the mainstream; and water in the mouth to form a strong vortex, whirlpool lower internal pressure, significantly reduced the water level of the mouth water, thereby reducing water flow, and suddenly produce a large pulse of the situation suddenly small. to change this conditions, the water in the mouth have been added into a hole in a reinforced concrete cover to cover and the original channel slope into a plane, so that the boundary conditions for the resumption by flat water continue to drain from the hole, of course, hole the size and number is calculated to go through. In addition, if the water elevation to allow, but also can be designed into the corridor and the vortex tube type water diversion mouth water mouth, this water port located in the channel bottom, will not disrupt water flow conditions. V. Recommendations channels in a rapid design of hydraulic structures, in order to prevent the emergence of these problems, the most effective, safest, easiest way, is building the upstream and downstream, take a length of about 80m ~ lOOm of the channel to change its longitudinal slope, change jet for the slow flow. so that the building is located in the slow flow segment, many of these problems will not occur. the proposal, building on the important channels, such as control point gate, aqueducts, culverts, etc. is very necessary, but also the only way to ensure the safety of channels, but also saving investment. Some buildings can not change the channel longitudinal slope should be based on the actual situation. to secure and to save investment principles.

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