Dissertation > Excellent graduate degree dissertation topics show

Study of the Inner Flow of Vortex Stage and the Vibrancy of Rotor System in High Vacuum Dry Pump

Author: ChenYao
Tutor: BaDeChun；LiuKun
School: Northeastern University
Course: Fluid Machinery and Engineering
Keywords: high vacuum dry pump vortex numerical simulation vibrancy CFD
CLC: TH314
Type: Master's thesis
Year: 2009
Downloads: 35
Quote: 1
Read: Download Dissertation

Abstract


In recent years, as the vacuum technology develop fleetly and the elevation of the customs’needs, the people start to develop various types of high vacuum dry pumps, which can and already widely used in the semiconductor industry, analytical instruments, electronic industries.Here we take the design of the high vacuum dry pump as an example, and introduced the pump’s structures and its working principle, especially studied the performance of vortex. Moreover, because of the high rotating speed and its horizontal structure, it is necessary to study the rotor system’s vibrancy and do some modification in dimension.For the structure designing part,we applied holweck stage and vortex structure For the driven part I applied one axis and put the engine inside.For the vortex structure, because of there is not enough information about its theory and designing method to catch, so it is necessary to study more of the structure, and we can use the results in designing work. For this part what I have mainly done as follows.1. Introduced the vortex pump’s working principle and flowing theory inside the channel.2. Make the model of the flowing zone with pro/Engineer, and meshed the zone use GAMBIT.3. Based on the RNG k-εturbulence model, use FLUENT to calculate the inner flow of vortex pump with different design parameter. Through the numerical simulation, we can study the internal flow law of vortex pump, and learn the pressure and velocity distribution in the channel.4. Optimized the structure and the dimensions of the vortex pump based on the results.In the study of the rotor system’s vibrancy, because it is a assembly, we need to use the Component Mode Synthesis to get the natural frequency of the system. In this part we introduced what the Component Mode Synthesis is and its common process, the analysis process. At last we check the natural frequency of the system whether allowed for the design rules, if not, we got some changes.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study on Springback of High-Strength Steel Stamping,TG386
  3. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  4. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  5. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  6. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  7. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  8. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  9. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  10. Numerical Simulation of Biomass Direct Reburning,TK16
  11. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  12. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  13. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  14. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23
  15. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  16. Numerical Simulation and Contrastive Analysis of Labyrinth Seals and Leaf Seals,TK263.2
  17. Physically Based Real-Time Fluid Simulation Technique,TP391.41
  18. Numerical Study on Phosphorus Distribution in Water Environment of the Three Gorges Reservoir,X832
  19. The Design and Performance Simulation of External Valve Small Displacement Pump,TE933.3
  20. Analysis of the Impact of Tailings Dam Stability under Seepage Role,TV649
  21. Study on Hydraulic Fracturing of Low Permeability Reservoir,P618.13

CLC: > Industrial Technology > Machinery and Instrument Industry > Pump > Vane pump > Whirlpool pump
© 2012 www.DissertationTopic.Net  Mobile