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The Development of Cyclone Accelerator

Author: DuDeXi
Tutor: ZhuLiJuan
School: Shenyang University of Technology
Course: Materials Science
Keywords: Tornado Cyclone blower Numerical Simulation Artificial Neural Networks
CLC: TG231
Type: Master's thesis
Year: 2008
Downloads: 80
Quote: 1
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Abstract


Foundry sand blower pipe wear has been hindering the development of the industry criticism. Affected by the nature of inspiration tornado suction phenomenon , this paper explores the material being sucked air swirl focused new way , a new foundry sand suction device solutions - air swirl accelerator. Based on centrifugal force , viscous drag and pressure gradient force three mechanical force balance model to analyze the air swirl within the pipe in conveying movement of materials in the suction pipes and high-speed swirl swirl together to achieve centralized suction the feasibility of sending a qualitative analysis to determine the concentration blower protection material when cyclone inlet pipes and cyclone inlet critical velocity . The use of speed pitot tube principle, the air swirl in a different structure and operation of the accelerator parameters conveying pipe inlet and static pressure , wind speed testing. Experimental studies have found that the length of the air hose swirl swirl accelerator centralized blower great influence that exists under the experimental conditions the value of an optimal pipe length 600mm, and this is directly related to the optimal length conveying the cross-section of pipe hydrostatic gradient and radial pressure gradient force distribution ; cyclones and hose inlet area ratio of the two inlet velocity distribution and static pressure distribution pipelines conveying both moderate impact , at a lower system under negative pressure entrance area ratio increases benefit the whole blower system cyclone concentrated suction ; under the experimental conditions , as appropriate to improve the system can be increased cyclone vacuum suction capacity , the material in the pipeline effects are concentrated blower more prominent . The first time the introduction of computational fluid dynamics software Flowizard strong pipeline dimensional numerical simulation of swirling work , the establishment of an appropriate Reynolds stress model . Numerical calculation results are compared with the experimental results verify the correctness of this test model . Which analyzes the length of pipes , inlet velocity and negative pressure on the system static pressure distribution within the conveying pipeline , three-dimensional velocity field changes, as well as the tube and swirl turbulent kinetic energy dissipation rate of turbulent kinetic energy distribution to determine the swirl the effective area of ??focus blower , cyclone tube derive prediction formula radial velocity . Application of BP neural network and the experimental test results of artificial neural network analysis, parameter optimization to get the ideal prediction model .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Casting > Foundry machinery and equipment > Molding material preparation machinery
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