Dissertation > Excellent graduate degree dissertation topics show

To sudden expansion Down Floor stream eliminate hydraulic characteristics of

Author: WangLiHui
Tutor: WangHaiJun
School: Kunming University of Science and Technology
Course: Water Resources and Hydropower Engineering
Keywords: energy dissipation by hydraulic jump with sudden expansion and abrupt drop test study turbulent jet hydraulic indicator percentage of energy dissipation expansion ratio
CLC: TV135.2
Type: Master's thesis
Year: 2008
Downloads: 34
Quote: 0
Read: Download Dissertation


With the western development strategy and the implementation of the western region to speed up economic development and will activate abundant hydropower resources and promote the implementation of water resources in the western region. With the deepening of hydropower development, many large-scale hydropower project started or are about to build. Most of these projects have the characteristics of high head and large discharge and its energy dissipation is the key to technical problems, for a long time, design departments, colleges and universities, scientific research departments attach great importance to it.There is a number of large hydropower projects have special requirements to environment, such as Xiangjiaba hydropower station, can’t use trajectory energy dissipation with serious atomization, only to adopt under-flow energy dissipation with less atomization and it is a traditional mode of energy dissipation, the energy can be dissipated through the surface swirl and strong turbulence with energy-efficient, small fluctuations in the tail water, less atomization. But, when under flow energy dissipation applies to large projects with high head and large discharge, hydraulic indicator on the floor and sidewall in the stilling basin is comparatively high, impact protection is very difficult, easily to destroy dissipater, therefore, a great deal of research was carried on by our predecessors and yielded fruitful results.Paper summarizes the results of previous studies and problems, in view of existing problems, we put forward a new kind of energy dissipation that energy dissipation by hydraulic jump with sudden expansion and abrupt drop in the bed, compared to conventional energy dissipater, it effectively reduces the hydraulic indicators on the floor and sidewall, increases the stability of dissipater its own and at the same time flow stability in the stilling basin, higher energy efficiency and so on, due to existing sudden expansion and abrupt drop in the bed, turbulent flow becomes more stronger in the stilling pool, there are varying degrees of horizontal and vertical whirls. As the new type of energy dissipation in the form of significant practical significance of practice, while at home and abroad, there is no example of engineering application, with the addition of the whole society to strengthen the awareness of environmental protection, the States pays constant attention to environmental protection, the environment-friendly forms of energy dissipation promote the use of a more significant social benefits.Through a combination of methods of theoretical analysis and hydraulic test, energy dissipation mechanism of energy dissipation by hydraulic jump, velocity distribution and its mechanism of reducing velocity on floor and sidewall, pressure distribution, the main factors of affecting hydraulic indicators and so on are analyzed by theoretical, and yields some theoretical results. Hydraulic test is adopted to analyzed the hydraulic indicators in the stilling basin, and verifying the theoretical results, focused on analysis of hydraulic indicator of vertical whirl in the backflow zone, and comes to put forward the relation of the velocity on the sidewall and average-velocity of intake flow, it is verified by hydraulic test.

Related Dissertations

  1. The Research of Consistency between the Tests and the Curricular Standards,G633.3
  2. Electromagnetic Compatibility Design of Synthesis Communications Vehicle,TN03
  3. After adding inorganic solid foam characteristic parameters of experimental study,TD752
  4. Study on the Foamed Bitumen Used in Cold In-Place Recycling of Asphalt Pavement,U414
  5. Test Study of Old Asphalt Recycling,U414
  6. Test Study and Optimize Analysis on Prefabricated Concrete Inspective Manhole,TU990.3
  7. Test Study on Behaviors of Cast-in-situ Concrete Thin-wall Pipe Pile under Lateral Load,TU473.1
  8. Ⅰ - Ⅱ mixed mode crack the fracture criteria meso process relationship,O346.1
  9. Study on Crack of Cylindrical Surface during the Upsetting of Heavy Forging,TG316.192
  10. Experimental study of hydraulic characteristics of underflow energy dissipation down sill of energy dissipator,TV653
  11. Study of Flow Characteristics of the Different Injection Angles Turbulent Jet into the Transflow,O358
  12. Numerical Simulation of Characteristics of Heat Transfer of Turbulent Jet into the Transflow,TK124
  13. Study on the Flow Mechanism and Heat Transfer Characteristics of the Multiple Turbulent Jet-to-Crossflow,TK124
  14. Study on Flow and Heat Transfer Performance of Turbulent Jet on Blade Cascade,TK471
  15. Performance testing of turbine generator set,TV734.1
  16. Strength Characteristic Experimental Study on Soil under Different Stress Path and Field Monitoring Analysis,TU411.3
  17. Study on the Forging Process of Large-Size Head with Flange,TG316
  18. A Study on Aging Test of Three-way Catalyst of the Gasoline Engine Based on FOCAS System,U464.13
  19. Study on Formulation and Co-extrusion Technology for PVC Foamed Sheets with Double Layers,TQ325.3
  20. 2.25Cr1Mo0.25V steel deformation defects in the process control simulation study,TG316

CLC: > Industrial Technology > Hydraulic Engineering > The basic science of water resources project > Hydraulics > Engineering hydraulics ( hydraulic construction hydraulics ) > Discharge structure hydraulics
© 2012 www.DissertationTopic.Net  Mobile