Dissertation > Excellent graduate degree dissertation topics show

Two-dimensional numerical simulation of flow with complex boundary Research and Application

Author: LiuZhe
Tutor: WeiWenLi；ShenYongMing
School: Xi'an University of Technology
Course: Port Coastal and Offshore Engineering
Keywords: Boundary Fitted Coordinates Tuning function Transverse momentum exchange Secondary flow
CLC: TV131.6
Type: Master's thesis
Year: 2005
Downloads: 399
Quote: 13
Read: Download Dissertation

Abstract


2D shallow water model research and application has a long history, many achievements have been applied to water, environment , port channel and other engineering fields , in order to project planning and design , construction and sustainable development of water provides an important role in guiding . River flow , due meandering coastline , waters differences between length and width dimensions and other characteristics, so that flow showing a clear three-dimensional features , usually using the depth-averaged two-dimensional mathematical model is not able to accurately simulate the hydraulic characteristics . In view of this , we propose a boundary fitted coordinate technology to generate boundary orthogonal curvilinear grids , based on this grid system , through the curvilinear coordinates 2D shallow water model correction to achieve numerical simulation of complex boundary flow . The main contents are as follows: 1 ) use of curvilinear coordinates techniques to overcome complex numerical difficulties caused by the border . For Thompson and Thomas mesh generation method adjustment function problems , we propose a new regulation function to generate boundary orthogonal curvilinear grid . 2 ) Consider the curve approximation circulation caused by the transverse momentum exchange is credited flow characteristics of complex secondary flow impact on the existing two-dimensional curvilinear coordinates shallow water equations are corrected. 3 ) using Yanenko spatial footwork and ADI algorithm for discrete two-dimensional shallow water equations solved when solving convection term used upwind ; and included the impact of the diffusion term . 4 ) using the corrected shallow water model, using Visual Fortran computer program prepared for the barriers 90 ° bend flow is calculated and compared with experimental data ; rectangular continuous curve to calculate the flow field and were compared with the measured data . The results are in good agreement with the measured data to prove that the model has some reliability and practicality. Finally, the water pumping station forebay flow pattern is simulated to verify forebay water change Xi'an University master's degree thesis made ??reasonable. The research results, for the study watershed sediment, water quality and other issues for further study three-dimensional flow basis . Keywords: boundary fitted coordinate ; adjustment function ; transverse momentum exchange ; secondary flow

Related Dissertations

  1. Flow Performance Analysis of Turbine Stage Cascades,TK471
  2. Investigation of Aerodynamic Design Method for Last Stage Blade of Turbine and Non-axisymmetric Endwall Profiling Technology,V235
  3. Numeric Investigation of Controlling Secondary Flow in Annual Compressor Cascade Using Endwall Fences,V231.3
  4. Analysis of Flow Performance and Strength of Blades with Tip Slots,V231.3
  5. The Secondary Flow of the Flow of Viscoelastic Fluid in Annulus with the Inner Cylinder Executing a Planetary Motion,TQ021.1
  6. Experimental Investigations on the Characteristics of Turbine Cascades,V231.3
  7. Experimental and Numerical Investigation of Using Bowed Blade in Compressor Cascade with Different Turning Angles,V231.3
  8. Theoretical and Experimental Research on Hot Gas Secondary Injection for Solid Rocket Motor,V435
  9. Numerical Investigation of Bowed and Swept Rotor in a Transonic Axial Compressor,V235.1
  10. Investigation on the Flow Features and Flowfield Structures of Centrifugal Compressors,TH452
  11. Nonholonomic systems in output feedback control problem,TP271.9
  12. The Research on Centrifugal Shear Flow Field and Its Application,TB126
  13. Numerical Simulation of the Flow Field in a Vertical Launching System,TJ768
  14. Mumerical Model of Flow and Sediment Transport in Compound Channel,TV149
  15. Study of Slurry Concentration and Flow Pattern in Polyolefine Reactor,TQ311
  16. Numerical Simulation of Flow Characteristic at 90-Degree Open-Channel Junction,TV133
  17. The Secondary Flow in the Flow of Power-law Fluid in Annulus with the Inner Cylinder Executing a Planetary Motion,TQ021.1
  18. Shape Optimization of Vertical Pipe Inlet/Outlet and Research of Y-type Tube in Pumped-Storage Plant,TV732.1
  19. The Two-phase Flow and Boiling Heat Transfer in 3-D Micro-fin Helical Tube,TK124
  20. Numeric Investigation of Using Endwall Fences in Annual Cascade of Transonic Compressor,TH45

CLC: > Industrial Technology > Hydraulic Engineering > The basic science of water resources project > Hydraulics > Hydraulic theory, calculation, experiment > Hydraulics Laboratory
© 2012 www.DissertationTopic.Net  Mobile