跳到主要內容

臺灣博碩士論文加值系統

(44.200.194.255) 您好!臺灣時間:2024/07/23 05:53
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:黃偉德
研究生(外文):HUANG,WEI-DE
論文名稱:狹縫對於多圓柱陣列之熱傳增益性探討
論文名稱(外文):Heat Enhancement for Multi-Cylinders Array by Using Slit
指導教授:許立傑
指導教授(外文):HSU,LI-CHIEH
口試委員:許立傑劉旭光陳慶耀
口試委員(外文):HSU,LI-CHIEHLIU,SHIUH-GUANGCHEN,CHING-YAO
口試日期:2020-07-14
學位類別:碩士
校院名稱:國立雲林科技大學
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:2020
畢業學年度:108
語文別:中文
論文頁數:101
中文關鍵詞:頻譜元素法狹縫圓柱四圓柱
外文關鍵詞:Spectral element methodSlotted cylinderFour cylinders
相關次數:
  • 被引用被引用:1
  • 點閱點閱:86
  • 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
摘要 i
ABSTRACT ii
目錄 iii
表目錄 vi
圖目錄 vii
第一章 緒論 1
1-1 研究背景與動機 1
1-2 文獻回顧 2
1-2.1 頻譜元素 2
1-2.2 單一圓柱 3
1-2.3 狹縫單圓柱 4
1-2.4 四圓柱體 7
第二章 數值分析方法 11
2-1 頻譜元素法 11
2-2 流場參數 13
2-3 數學模型 17
2-4 邊界條件設定 18
2-5 數值模擬驗證 21
2-5.1 Re500 單圓柱 Cd、Nu值驗證 21
2-5.2 Re200 單圓柱 Cd、Cl、St、Nu值驗證 22
2-5.3 Re200 四圓柱γ=45° P/D=2.5 Cd St 25
2-5.4 Re200 四圓柱γ=0° P/D=2.5 Nu值驗證 27
第三章 狹縫單圓柱模擬分析 28
3-1 狹縫單圓柱模擬規劃 28
3-2 Re500 Slit_=0° 噴射效應 模擬結果與分析 28
3-2.1 S/D=0.1、S/D=0.2 Slit_=0° 流場流態 28
3-2.2 S/D = 0.1與S/D=0.2 = 0° 溫度場現象分析 33
3-3 Re500 Slit_=90° 吹吸(呼吸)效應 模擬結果與分析 37
3-3.1 S/D=0.1、S/D=0.2 Slit_=90° 流場流態 37
3-3.2 S/D = 0.1與S/D=0.2 = 0° 溫度場現象分析 42
3-4 Re500 S/D = 0.1與0.2 Slit_=0°~90° 模擬結果與分析 46
3-4.1 S/D = 0.1與0.2 =0°~90° 整體阻力係數(Cd)分析 46
3-4.2 S/D = 0.1與0.2 =0°~90°整體升力係數(Cl) 48
3-4.3 S/D = 0.1與0.2 =0°~90°司特勞克數(Strouhal number)分析 50
3-4.4 S/D = 0.1與0.2 =0°~90° 狹縫中流量(Cq) 分析 51
3-4.5 S/D = 0.1與0.2 =0°~90° 努賽爾數(Nusselt number) 分析 52
3-5 狹縫單圓柱熱傳效率結論 55
第四章 狹縫多圓柱模擬分析 56
4-1 狹縫多圓柱模擬規劃 56
4-2 Re200 γ=45º P/D=2.5 S/D=0.1 Slit_=0º~90º at Cy(1)模式(一) 57
4-2.1 Re200 γ=45º P/D=2.5 Slit_=0 º ~90 º at Cy 1溫度流線圖 57
4-2.2 Re200 γ=45º P/D=2.5 阻力值(Cd)變化分析 62
4-2.3 Re200 γ=45º P/D=2.5 升力振幅(Cl_amplitude)變化分析 65
4-2.4 Re200 γ=45º P/D=2.5 狹縫流量(Cq)、努賽爾數(Nu)變化分析 68
4-2.5 Re200 γ=45º P/D=2.5 努賽爾數(Nu)變化分析 69
4-2.6 Re200γ=45º P/D=2.5 改變圓柱(1)狹縫角結論 73
4-3 Re200 γ=45º P/D=2~4 S/D=0.1 Slit_=90° at Cy(1) 模式(二) 74
4-3.1 γ=45º P/D=2~4 Cy1努賽爾數(Nu)、阻力(Cd)狹縫變化分析 74
4-3.2 γ=45º P/D=2~4 Cy1 =90º狹縫流量(Cq)分析 77
4-3.3 γ=45º P/D=2~4 Cy3努賽爾數(Nu)狹縫變化分析 79
4-3.4 γ=45º P/D=2~4 Cy2、4努賽爾數(Nu)狹縫變化分析 82
4-3.5 γ=45º P/D=2~4 Total努賽爾數(Nu)狹縫變化分析 84
4-3.6 Re200 γ=45º S/D=0.1 Slit_=90° at Cy(1)改變P/D距離結論 85
第五章 總結論與未來展望 86
5-1 總結論 86
5-2 未來展望 87
參考文獻 88


[1] Z. Han, D. Zhou, X. Gui, J. Tu, "Numerical study of flow past four square-arranged cylinders using," Computers & Fluids, no. 84, pp. 100-112, 2013.
[2] D. L. Gao, W. L. Chen, H. Li , H. Hu, "Flow around a slotted circular cylinder at various angles of attack," Experiments in Fluids, no. 58, pp. 1-15, 2017.
[3] S. A. Orszag, G. S. Patterson, "Numerical Simulation of Three-Dimensional Homogeneous Isotropic Turbulence," Physical Review Letters, pp. 76-79, 1972.
[4] J. H. Lienhard, "Synopsis of Lift,Drag And Vortex Frequency Data For Rigid Circular," Bulletin (Washington State University. College of Engineering. Research Division, 300., 1966.
[5] 田文政, “以頻譜元素法模擬圓柱流場及其剪阻力方法探討,” 碩士論文, pp. 26-31, 2009.
[6] L.C.Hsu, “International Journal of Thermal Sciences,” Heat Transfer of Flow past a Cylinder with a slit, (accepted), pp. 12-26, 2019.
[7] S. Pachpute, B. Premachandran, P. Talukdara, A Numerical Study of Combined Forced Convection and Gas Radiation From a Circular Cylinder in Cross Flow, Registered in England and Wales: Taylor & Francis, 2014.
[8] E. R. G. Eckert, E. Soehngen, "Distribution of Heat Transfer Coefficients Around Circular Cylinder in Cross Flow at Reynolds Number 20 to 500," Journal of Heat Transfer, no. 74, p. 343–347, 1952.
[9] W. Chun, R. F. Boehm, "Calculation of Forced Flow and Heat Transfer Around a Cylinder In Crossflow," Numerical Heat Transfer, no. 15, p. 101–122, 1989.
[10] N. Mahir, Z. Altac, "Numerical investigation of convective heat transfer in unsteady flow past two cylinders in tandem arrangements," International Journal of Heat and Fluid Flow, p. 1318, 2008.
[11] C. Liu, X. Zheng, C. H. Sung, "Preconditioned Multigrid Methods for Unsteady Incompressible Flows," pp. 35-37, 1998.
[12] M. J. Haider, S. N. Danish, W. A. Khan, S. U. Mehdi, B. A. Abbasi, "Heat Transfer and Fluid Flow Over Circular Cyclinders in Cross Flow," NUST Journal of Engineering Sciences, no. 3, 2010.
[13] E.Buyruk, "Numerical study of heat transfer characteristics on tandem cylinders,inline and staggered tube banks in cross-flow of air," International Communications in Heat and Mass Transfer, vol. 29, no. 3, pp. 355-366, 2002.
[14] Esfahani, “LB simulation of heat transfer in flow past a square unit,” Comptes Rendus Mecanique, pp. 526-535, 2012.
[15] X. K. Wang, K. Gong , H. Liu , J. X. Zhang, S. K. Tan, "Flow around four cylinders arranged in a square configuration," Fluids and Structures, no. 43, pp. 179-199, 2013.

電子全文 電子全文(網際網路公開日期:20250801)
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top