跳到主要內容

臺灣博碩士論文加值系統

(54.91.62.236) 您好!臺灣時間:2022/01/18 01:04
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

我願授權國圖
: 
twitterline
研究生:陳嘉宏
研究生(外文):Jia-Hong Chen
論文名稱:於過渡區之穩態可壓縮流流經圓柱體的流場及熱傳分析之研究
論文名稱(外文):Analysis of the Flow Field and Heat Transfer for Steady Compressible Flow Over a Cylinder in the Transitional Regime
指導教授:吳宗信吳宗信引用關係
指導教授(外文):Jong-Shinn Wu
學位類別:碩士
校院名稱:國立交通大學
系所名稱:機械工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:125
中文關鍵詞:蒙地卡羅法圓柱渦流熱傳可壓縮流
外文關鍵詞:DSMCcircular cylindervortexheat transfercompressible flow
相關次數:
  • 被引用被引用:0
  • 點閱點閱:118
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
本研究主要是應用平行化非結構性的直接蒙地卡羅法模擬在過渡區之穩態可壓縮流流經圓柱體的流場及熱傳分析。使用grid over-lapping method 來加速在回流區的sample數量。流場的設定條件Knudsen number=0.02∼2,Reynolds number=10∼75,Mach number=0.1∼3,圓柱表面溫度則為300K∼900K。數值模擬的結果顯示出在圓柱後的回流區會隨著Reynolds number增加而有增長的趨勢,隨著Knudsen number的增加,流場變的較稀薄,而有逐漸減小的趨勢。此外,圓柱表面的溫度也會影響回流區的存在與否。

Flow field and heat transfer for argon gas flows surrounding a circular cylinder at low Reynolds numbers in the transitional regime is simulated using the unstructured-mesh, parallel direct simulation Monte Carlo [DSMC] method. A grid-overlapping method is designed to speed up accumulating an appreciable number of samples within wake region. Flow conditions include free-stream Knudsen numbers in the range of 0.02-2, free-stream Reynolds numbers in the range of 10-75, free-stream Mach number in the range of 0.1-3, and surface temperature of the cylinder in the range of 300-900K. Numerical results show that the size of symmetric recirculating bubble behind the cylinder increases with increasing Reynolds numbers at constant Knudsen number, while it decreases with increasing Knudsen numbers at constant Reynolds numbers. In other words, rarefaction tends to destroy the formation of recirculating bubble behind the cylinder. In addition, heat transfer from the surface of the cylinder correlates strongly with the existence of the recirculating bubble behind the cylinder.

中文摘要 I
ABSTRACT II
TABLE OF CONTENTS III
LIST OF TABLES IV
LIST OF FIGURES V
CHAPTER 1 INTRODUCTION 1
CHAPTER 2 NUMERICAL METHOD 6
2.1 CONVENTIONAL DSMC METHOD 6
2.2 PARALLEL DSMC METHOD 7
2.3 GRID-OVERLAPPING METHOD 10
CHAPTER 3 RESULTS AND DISCUSSIONS 12
3.1 NORMALIZED NUMBER DENSITY CONTOUR 12
3.2 NORMALIZED TEMPERATURE AND NON-EQUILIBRIUM CONTOURS 13
3.3 FLOW FIELD VECTOR AND MACH NUMBER 15
3.4 THE DISTRIBUTION OF PRESSURE COEFFICIENT 15
3.5 THE DISTRIBUTION OF FRICTION COEFFICIENT 17
3.6 THE DISTRIBUTION OF HEAT TRANSFER HEAT COEFFICIENT 18
3.7 THE WAKE LENGTH 19
CHAPTER 4 CONCLUSIONS 21
REFERENCES 23

1. Abarbanel, S.S., Don, W.S., Gottlieb, D., Rudy, D.H. and Townsend, J.C., "Secondary frequencies in the wake of a circular cylinder with vortex shedding," Journal of Fluid Mechanics, Vol. 225, pp.557-574, 1990
2. Acrivos, A., Snowden, D.D., Grove, A.S. and Peterson, E.E., "The steady separated flow past a circular cylinder at large Reynolds numbers," Journal of Fluid Mechanics, Vol. 21, pp. 737-760, 1964.
3. Bird, G.A., Molecular Gas Dynamics and the Direct Simulation of Gas Flows, Clarendon Press, Oxford, 1994
4. Bovin, S. and Fortin, M., "A new artificial viscosity method for compressible viscous flow simulations by FEM," International Journal for Computational Fluid Dynamics, Vol. 1, pp. 25-41, 1993
5. Braza, M., Chassaing, P. and Ha Minh, H., "Numerical study and physical analysis of the pressue and velocity fields in the wake of a circular cylinder," Journal of Fluid Mechanics, Vol. 165, pp. 79-130, 1986
6. Chang, M.W. and Finlayson, B.A., "Heat transfer in flow past cylinders at Re < 150 - Part I. Calculations for constant fluid properties," Numerical Heat Transfer, Vol. 12, pp. 179-195, 1987
7. Chen, C.-H. and Weng, F.-B., "Heat transfer for incompressible and compressible fluid flows over a heated cylinder," Numerical Heat Transfer, Part A, Vol. 18, pp. 325-342, 1990.
8. Dennis, S.C. and Chang, G., "Numerical solutions for steady flow past a cicular cylinder at Reynolds numbers up to 100," Journal of Fluid Mechanics, Vol. 42, pp. 471-489, 1970
9. Don, W.S. and Gottlieb, D., "Spectral simulation of an unsteady compressible flow past a circular cylinder," Computer Methods in Applied Mechanics and Engineering, Vol. 80, pp. 39-58, 1990
10. Fornberg, B., "A numerical study of steady viscous flow past a circular cylinder," Journal of Fluid Mechanics, Vol. 98, pp. 819-855, 1980.
11. Friehe, C.A., "Vortex shedding from cylinders at low Reynolds numbers," Journal of Fluid Mechanics, Vol. 100, pp. 237-241, 1980
12. Griffin, O.M., "A note on bluff body vortex formation," Journal of Fluid Mechanics, Vol. 284, pp. 217-224, 1995.
13. Grove, A.S., Shair, F.H., Peterson, E.E. and Acrivos, A., "An experimental investigation of the steady separated flow past a circular cylinder," Journal of Fluid Mechanics, Vol. 19, pp. 60-80, 1964.
14. Karniadakis, G.M., "Numerical simulation of forced convection heat transfer from a cylinder in crossflow," International Journal of Heat and Mass Transfer, Vol. 31, pp. 107-118, 1988.
15. Mittal, S., "Finite element computation of unsteady viscous compressible flows," Computer Methods in Applied Mechanics and Engineering, Vol. 157, pp. 151-175, 1998.
16. Tritton, D.J., "Experiments on the flow past a circular cylinder at low Reynolds numbers," Journal of Fluid Mechanics, Vol. 6, pp. 547-567, 1959.
17. Underwood, R.L., "Calculation of incompressible flow past a circular cylinder at moderate Reynolds numbers," Journal of Fluid Mechanics, Vo. 37, pp. 95-114, 1969.
18. Zebib, A., "Stability of viscous flow past a circular cylinder," Journal of Engineering Mathematics, Vol. 21, pp. 155-165, 1987.

QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
1. 張敬宜(民86)。國小高年級學童蒸發、凝結與沸騰概念之研究。科學教育學刊,5期,321-346頁。
2. 高文民(民86)。建構論導向的自然科新課程教學。研習資訊,14卷1期,47-56頁。
3. 莊麗娟(民84)。Campione和Brown的「漸進提示動態評量」。高市文教,56期,49-51頁。
4. 邱照麟(民89)。國小學童「空氣」概念之研究。國立屏東師範學院國民教育研究所碩士論文。
5. 邱美虹(民89)。概念改變研究的省思與啟示。科學教育學刊,8卷1期,1-34頁。
6. 邱美虹、陳英嫻(民84)。月相盈虧之概念改變。師大學報,40期,509-547頁。
7. 林生傳(民87)。建構主義的教學評析。課程與教學季刊,1卷3期,1-14頁。
8. 張敬宜(民89)。大台北地區國小學童對空氣相關概念認知之研究。科學教育學刊。8卷2期,141-156頁。
9. 張世忠、盧娟娟〈民86〉。建構主義與科學教學。科學教育月刊,202期,16-23頁。
10. 張景媛(民87)。新學習時代的來臨:建構學習的理論與實務。教育研究資訊,6卷1期,52-65頁。
11. 郭重吉(民77)。從認知觀點探討自然科學的學習。教育學院學報,13期,352-378頁。
12. 郭金美(民84)。建構主義教學方法-影響兒童光學概念學習教學模式的研究。嘉義師院學報,13期,159-201頁。
13. 郭金美(民88)。國小學童天文學的概念發展研究。國民教育研究學報,5期,95-124頁。
14. 陳文典、劉德生(民83)。國小學生對熱與溫度概念的認知。科學教育學刊,2卷2期,77-114頁。
15. 陳嘉成(民87)。合作學習式概念構圖在國小自然科教學之成效研究。教育與心理研究,21期,107-128頁。