蒸汽發(fā)生器（SG）是任何發(fā)電廠中最重要的組成部分之一。基本上它起到了熱交換器的作用,將來自反應(yīng)堆堆芯的冷卻劑的熱量傳遞到給水中,然后將給水轉(zhuǎn)化為水蒸汽。產(chǎn)生的水蒸汽將帶動渦輪機做功。SG的作用是至關(guān)重要,因為它有助于調(diào)節(jié)反應(yīng)堆內(nèi)的溫度。SG的失效將會導(dǎo)致非常危險的情況,從而導(dǎo)致非常嚴重的事故。SG的建模需要非常仔細的分析,在設(shè)計時也必須注意,以確保工廠的安全性和可靠性。在SG的設(shè)計中,運行工況下的溫度、壓力、轉(zhuǎn)速等是影響SG性能的重要因素。此外,還必須對SG內(nèi)部的應(yīng)力、應(yīng)變和變形等靜力結(jié)構(gòu)分析進行分析。了解在壓力下或正常條件下變形的區(qū)域是非常重要的,因為這些區(qū)域可能由于疲勞而發(fā)生裂紋。為了更好、更快、優(yōu)化蒸汽發(fā)生器的設(shè)計決策以及冷卻劑和材料的選擇,就需要進行這樣的分析。因此,在SG上應(yīng)用了先進的數(shù)值模擬方法,以確保SG在正常工作條件下的性能。本文研究的目的是對我國實驗高溫氣冷堆（HTGR-10）的蒸汽發(fā)生器進行熱流固耦合分析。對蒸汽發(fā)生器進行了建模,并對其進行了邊界條件和結(jié)構(gòu)分析。蒸汽發(fā)生器是電廠系統(tǒng)的重要組成部分,是保證電廠安全、高效運行的關(guān)鍵部件。為了預(yù)測蒸汽發(fā)生器管內(nèi)的熱分布,必... 

【文章來源】：華北電力大學(xué)(北京)北京市 211工程院校 教育部直屬院校

【文章頁數(shù)】：67 頁

【學(xué)位級別】：碩士

【文章目錄】：
摘要
ABSTRACT
CHAPTER 1. INTRODUCTION
    1.1 RESEARCH SIGNIFICANCE AND BACKGROUND
    1.2 LITERATURE REVIEW
    1.3 RESEARCH METHODOLOGY
    1.4 CHRONOLOGY OF RESEARCH
    1.5 ORGANIZATION OF THE THESIS
CHAPTER 2. STEAM GENERATOR OF HTGR-10
    2.1 BRIEF INTRODUCTION OF HTGR-10
    2.2 INTRODUCTION TO STEAM GENERATOR
        2.2.1 Types of steam generators
        2.2.2 Heat Transfer Phenomena in Steam Generator
        2.2.3 Factors Affecting Rate of Heat Transfer in a Steam Generator
    2.3 HELICALLY COILED STEAM GENERATOR OF HTGR-10
        2.3.1 Terminology of helically coiled tubes
        2.3.2 Secondary flow and laminar to turbulent transition in helical tube
CHAPTER 3. COMPUTATIONAL FLUID DYNAMICS:BACKGROUNDAND METHODOLOGY
    3.1 COMPUTATIONAL FLUID DYNAMICS
    3.2 ADVANTAGES OF CFD
    3.3 CONCEPT OF CFD
    3.4 PERFORMING A CFD ANALYSIS
        3.4.1 Pre-rocessing
        3.4.2 Processing
        3.4.3 Post-processing
    3.5 PROBLEM-SOLVING WITH CFD
    3.6 CFD GOVERNING EQUATIONS
        3.6.1 Conservation Equations
        3.6.2 Equation of State
        3.6.3 Newton's Law of Viscosity （empirical relation for viscosity μ）
        3.6.4 Fourier's Second Law of Thermodynamics (empirical relation forthermal conductivity k
        3.6.5 General Transport Equation
        3.6.6 （RANS）Equations
    3.7 TURBULENCE MODELLING
    3.8 FINITE VOLUME METHOD
    3.9 DIFFERENCING SCHEMES
        3.9.1 Central Differencing Scheme
        3.9.2 Upwind Differencing Scheme
CHAPTER 4. COMPUTATIONAL FLUID DYNAMICS:MODELINGAND SIMULATION
    4.1 WORK ORDER IN ANSYS FLUENT
    4.2 MODEL BUILDING OF A STEAM GENERATOR
    4.3 MESHING
        4.3.1 Mesh Quality
    4.4 FLUENT SETUP
        4.4.1 Fluid Domain Setup
        4.4.2 Solid Domain Setup
    4.5 RESULTS
CHAPTER 5. FINITE ELEMENT ANALYSIS:THEORY AND RESULTS
    5.1 FINITE ELEMENT ANALYSIS
    5.2 STEPS FOR FEM
    5.3 STRESS SINGULARITY
    5.4 FEM ANALYSIS
        5.4.1 Building the model
        5.4.2 Material properties
        5.4.3 Boundary conditions and loads
    5.5 ANALYSIS SETTINGS
    5.6 RESULTS
CHAPTER 6. CONCLUSION AND FUTURE RECOMMENDATIONS
    6.1 CONCLUSION
    6.2 FUTURE RECOMMENDATIONS
REFERENCES
ACKNOWLEDGEMENTS
PUBLICATIONS


【參考文獻】：
期刊論文
[1]Two Phase Flow Stability in the HTR-10 Steam Generator[J]. 居懷明,左開芬,劉志勇,徐元輝.  Tsinghua Science and Technology. 2001(01)



本文編號：3131619