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The Numerical Analysis of the Batch Transportation Process of the Refined Petroleum Products and the Development of Simulation Software

Author: ZhangQingSong
Tutor: ZhaoHuiJun
School: Jiangsu Polytechnic University
Course: Gas Storage and Transportation
Keywords: Batch Transportation Hydraulic transient Numerical calculation Simulation software PHOENICS
CLC: TE832
Type: Master's thesis
Year: 2007
Downloads: 289
Quote: 1
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Abstract


Pipeline run economic security, from design to operation and management of each link, must thoroughly grasp the variation of the products pipeline conditions. Developed a pipeline of dynamic simulation software, need accurate mathematical models and algorithms, on this basis, this paper carried out a products pipeline transportation process in order theoretical analysis, numerical calculation and dynamic simulation software research and development. Oil physical parameters is important to accurately predict when the contaminated product characteristics and hydraulic characteristics of in-depth research and analysis Contaminated segment. Use of strong nonlinear mapping ability of artificial neural networks, artificial neural network Contamination Viscosity model, the model is able to predict the concentration of the nonlinear influence of various factors and different contaminated contaminated viscosity, and phase with the traditional empirical formula than the small error and taking into account the impact of temperature changes and other factors; difficult to explain the formation of Contaminated Contaminated theory for one-dimensional, development and cross-sectional velocity distribution of the contaminated product problem, using two-dimensional Contamination theory - Convection diffusion equation, and the use of time-secession law will be divided into pure convection equation and pure diffusion equation, by means of the method of characteristics for solving pure convection equation, again using the time splitting method for pure diffusion equation five Diagonal format into three pairs of angular format, using the catch-up method to solve, to avoid numerical diffusion calculation faster; Navier-Stokes equations, the mass transport equation, and proceed from Momentum quality coupled problem, with κ-ε turbulence model theory, a more effective order TRANSPORTATION new mathematical model, and software PHOENICS tube transport special conditions in order Contaminated numerical simulation calculation results clearly reflect the tube two oil at the interface convection-diffusion mass transfer phenomena. And analyzed the impact of the oil in the vertical pipe conveying the order of contaminated shut, right-angle bends, blind Contaminated Concentration branch pipe; conveying hydraulic transient pipe flow characteristics of the traditional analysis of the order line method is improved, the new formula, and the boundary conditions were also made corresponding processing to achieve a simulation of hydraulic transients in the whole process of the order transport, reliable calculations; based on the continuity equation, momentum conservation equation and energy conservation equation, thermal transient equations derived considering the friction and heat treatment containing cubic term of speed v calculated characteristic equation, the simultaneous hydraulic transient equations and contaminated convection diffusion equation, analysis of media the order conveying heat pipe coupling - hydraulic - Contaminated model, and and the establishment of the corresponding feature line algorithm. Numerical experiments show that the method has higher accuracy. On the basis of the above study, a set of simulated pipeline of hydraulic transients process and contaminated condition of dynamic simulation software developed using Visual Basic language. Station out of the station can be displayed when the occurrence of water hammer pressure, the pressure and temperature distribution along the flow rate of each station and each batching interface changes over time. And is able to simulate the situation of contaminated, including contaminated paragraph changes with time, the last station of the contaminated volume.

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CLC: > Industrial Technology > Oil and gas industry > Oil, natural gas storage and transportation > Oil and Gas Transmission and Transport > Pipeline
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