STF系統(tǒng)的復(fù)雜奇異性及核反應(yīng)堆的數(shù)學(xué)應(yīng)用
發(fā)布時(shí)間:2021-12-31 07:53
本研究主要包括用逼近方法構(gòu)造多種合理的快速發(fā)電機(jī)模型,并用數(shù)值模擬進(jìn)行檢驗(yàn)。拉伸扭曲流(STF)是一個(gè)具有二次非線性項(xiàng)的常微分方程的三維系統(tǒng)。該數(shù)學(xué)統(tǒng)統(tǒng)與航空航天工程有關(guān),其應(yīng)用在人造衛(wèi)星燃料箱。由于該系統(tǒng)中有復(fù)奇異點(diǎn),所以可資利用的文獻(xiàn)有限。發(fā)電機(jī)理論的一個(gè)自然的出發(fā)點(diǎn)是假設(shè)流體運(yùn)動(dòng)是在一個(gè)給定的向量場中,而不考慮驅(qū)動(dòng)力的原因。最近幾年,人們認(rèn)識(shí)到一個(gè)小擴(kuò)散的奇異限制,大的磁雷諾數(shù)是很多這類問題的可行選擇。一些大問題是,發(fā)電機(jī)能運(yùn)轉(zhuǎn)多快?該系統(tǒng)的穩(wěn)定狀態(tài)和不穩(wěn)定狀態(tài)是什么樣的?有安全措施保護(hù)系統(tǒng)嗎?有可能做出一個(gè)具有相同特性的新系統(tǒng)嗎?模擬該系統(tǒng)最好的數(shù)學(xué)模型和方法是什么?在該研究中,我們已經(jīng)成功地解決了這些問題。在這篇論文中,把改進(jìn)了的Adomian分解法(ADM)以及第五階Runge-Kutta方法(RK5)運(yùn)用到了STF系統(tǒng)。為解決系統(tǒng)的混沌和非混沌行為,我們開發(fā)了一個(gè)計(jì)算機(jī)Matlab程序。這依賴于Lyapunov指數(shù)是否為正。牛頓方法用來表現(xiàn)最好的收斂。進(jìn)而,我們研究了一個(gè)外力作用在STF系統(tǒng),有理論上詳細(xì)細(xì)分析了的控制參數(shù)的行為。該研究同時(shí)還通過用專門的核反應(yīng)堆程序分析了...
【文章來源】:重慶大學(xué)重慶市 211工程院校 985工程院校 教育部直屬院校
【文章頁數(shù)】:91 頁
【學(xué)位級別】:碩士
【文章目錄】:
摘要
ABSTRACT
Chapter 1 Introduction
1.1 Motivation
1.2 Overview of Continuous-Time-Autonomous Chaotic Systems
1.2.1 Concept of Chaos theory
1.2.2 Sensitivity to initial conditions
1.2.3 Butterfly effect
1.3 Overview of Stretch-Twist-Fold (STF)System
1.3.1 Dynamo Theory
1.3.2 Fluid dynamics
1.3.3 MHD Generator
1.3.4 Magnetic Field Evolution in Steady Chaotic Flows
1.4 Overview of Nuclear Reactor
1.5 Dissertation Organization
Chapter 2 Analytical view of Stretch, Twist, Fold (STF) System
2.1 Introduction
2.2 Sensitivity dependent on initial condition of STF System
2.3 Control parameters
2.4 Influence of System Parameters to the Chaotic Features
2.5 Summary
Chapter 3Stability Control of Stretch,Twist,Fold Flow by Using Numerical Method
3.1 Introduction
3.2 Description of methods
3.3 Modified Method
3.3.1 Unstable position
3.3.2 Stablee positionn
3.4 Fixed points for function of several variables
3.5 Summary
Chapter 4 Complex Dynamics of Continuous-Time-Autonomous Chaotic System
4.1 Introduction
4.2 Structure of Stretch,Twist,Fold System (STF)
4.3 Equilibria of system
4.4 Externel Force
4.5 Controller parameter
4.6 Summary
Chapter 5 Stability and instability of Chaos in Stretch, Twist,Fold Flow
5.1 Introduction
5.2 Description of Methods
5.2.1 Adomian decomposition method (ADM)
5.2.2 Modified method
5.3 Simulation results
5.3.1 Non-chaotic solutions
5.3.2 Chaotic solutions
5.4 Summary
Chapter 6 Mathematical modeling for simulation of nuclearreactor analysis
6.1 Introduction
6.2 Modification in THEATRe code
6.3 Mathematical Studies
6.4 Boundaryconditions
6.5 Energy balance in the fuel plate region
6.6 Summary
Acknowledgment
References
APPENDIXS
Matlab 7.10 language prograam (RK5 & ADM Codes)
Fortran 77 mmodified language program
Modified THEATTRe Codeflow diagram
本文編號(hào):3559894
【文章來源】:重慶大學(xué)重慶市 211工程院校 985工程院校 教育部直屬院校
【文章頁數(shù)】:91 頁
【學(xué)位級別】:碩士
【文章目錄】:
摘要
ABSTRACT
Chapter 1 Introduction
1.1 Motivation
1.2 Overview of Continuous-Time-Autonomous Chaotic Systems
1.2.1 Concept of Chaos theory
1.2.2 Sensitivity to initial conditions
1.2.3 Butterfly effect
1.3 Overview of Stretch-Twist-Fold (STF)System
1.3.1 Dynamo Theory
1.3.2 Fluid dynamics
1.3.3 MHD Generator
1.3.4 Magnetic Field Evolution in Steady Chaotic Flows
1.4 Overview of Nuclear Reactor
1.5 Dissertation Organization
Chapter 2 Analytical view of Stretch, Twist, Fold (STF) System
2.1 Introduction
2.2 Sensitivity dependent on initial condition of STF System
2.3 Control parameters
2.4 Influence of System Parameters to the Chaotic Features
2.5 Summary
Chapter 3Stability Control of Stretch,Twist,Fold Flow by Using Numerical Method
3.1 Introduction
3.2 Description of methods
3.3 Modified Method
3.3.1 Unstable position
3.3.2 Stablee positionn
3.4 Fixed points for function of several variables
3.5 Summary
Chapter 4 Complex Dynamics of Continuous-Time-Autonomous Chaotic System
4.1 Introduction
4.2 Structure of Stretch,Twist,Fold System (STF)
4.3 Equilibria of system
4.4 Externel Force
4.5 Controller parameter
4.6 Summary
Chapter 5 Stability and instability of Chaos in Stretch, Twist,Fold Flow
5.1 Introduction
5.2 Description of Methods
5.2.1 Adomian decomposition method (ADM)
5.2.2 Modified method
5.3 Simulation results
5.3.1 Non-chaotic solutions
5.3.2 Chaotic solutions
5.4 Summary
Chapter 6 Mathematical modeling for simulation of nuclearreactor analysis
6.1 Introduction
6.2 Modification in THEATRe code
6.3 Mathematical Studies
6.4 Boundaryconditions
6.5 Energy balance in the fuel plate region
6.6 Summary
Acknowledgment
References
APPENDIXS
Matlab 7.10 language prograam (RK5 & ADM Codes)
Fortran 77 mmodified language program
Modified THEATTRe Codeflow diagram
本文編號(hào):3559894
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