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Computation and Analysis of CNG Vehicle High Pressure Pipe Flow Field Characteristic and Optimization Design of Arrangement

Author: CaoHongQuan
Tutor: HeTaiBi
School: West China University
Course: Vehicle Engineering
Keywords: High pressure piping Three-dimensional model Flow field characteristics Fluent
CLC: U469.75
Type: Master's thesis
Year: 2011
Downloads: 56
Quote: 0
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Abstract


This article summarizes the basis of domestic and foreign research on the use of CFD (Computational Fluid Dynamics) theory of three-dimensional analysis of the flow field of high pressure pipeline natural gas bus , the flow field of the high-pressure line on a different outlet pressure , bend radius as well as pipeline diameter changes the corresponding numerical simulation model , come to favor the high-pressure gas within the pipeline flow field distribution in conclusions . The papers constituted by the following . First, the research background and significance , followed by high-pressure pipeline gas cars , and a detailed description of the structure and work process , and high - pressure piping . Subsequently , on the basis of high-pressure piping structure , the establishment of the three-dimensional model , thrust reversers and the establishment of the internal flow field model and based on the actual work of the high-pressure pipeline , followed by using Gambit convection field model mesh and according to the need to set the boundary conditions of the mesh model . Introduce middle of the paper , numerical simulation , numerical simulation equations and computational fluid dynamics , and numerical simulation software Fluent its use instructions , and numerical simulation before it comes to the parameters set . Chapter in papers on the improvement of several bend radius analysis to determine the optimal one . And bends before and after the change in the high - pressure gas in the pressure inside the pipeline and the velocity distribution for comparison, the improved high-pressure piping or a better distribution . Then , by means of theoretical calculations pipe diameter has been increased to the aerated improve vehicle efficiency and utilization of gas in the cylinders , and thus change the pipe diameter model simulation analysis to prove the feasibility of this optimization . Looking forward to the future research directions in the high-pressure pipeline in Chapter VI concludes the paper work done .

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CLC: > Transportation > Road transport > Automotive Engineering > A variety of automotive > Various energy vehicles > Liquefied gas, cars, steam cars
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