跳到主要內容

臺灣博碩士論文加值系統

(18.97.9.172) 您好!臺灣時間:2025/02/10 01:50
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:張育源
研究生(外文):Yu-Yuan Chang
論文名稱:移動辦公室內熱流場模擬分析之技術
論文名稱(外文):Simulation and Analysis Technology of the Thermo-Flow Field inside a Moving Office
指導教授:黃國修黃國修引用關係
口試委員:吳浴沂嚴明明
口試日期:2008-07-24
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:車輛工程系所
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:2008
畢業學年度:96
語文別:中文
論文頁數:54
中文關鍵詞:計算流體力學氣流場結構數值分析
外文關鍵詞:Computational Fluid Dynamicsairflow structurenumerical analysis
相關次數:
  • 被引用被引用:3
  • 點閱點閱:306
  • 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
流體流動與熱傳遞現象在現今生活中已大量存在於自然界及各種工程領域中,而透過計算流體力學(Computational Fluid Dynamics,簡稱CFD)的數值分析可模擬出上述這些複雜的物理變動現象並作有系統性的分析。近年來CFD已廣泛地被應用於分析車艙內的氣流場結構,目的在於加速開發工程的設計時間與節省資源,並準確地分析車艙內部各種熱流場分佈,期能瞭解實際空氣熱流場的變動。本研究將針對已改裝過的Ford E350車艙模型進行氣流模擬分析,評估經改裝過後,內部流場的配置變化對於人員乘坐舒適度有何影響。研究方法利用CFD軟體- FLUENT求解出車艙內部流場的溫度、壓力及速度等分佈,並且考慮太陽輻射熱、人員生理熱及精密電子設備熱源等實際狀況;另外,將使用網格自適應技術來增加模擬結果的準確性,並引入ISO 7730的PMV與PPD指標來評估人員的熱舒適感受。模擬結果說明經由車艙內部配置的改變,人員的熱舒適普遍上是不舒適的,原因在於原廠的出、吸風口的位置並不能有效將車內的熱負荷排出車外,在未來可針對此點利用空氣流管理技術,來改善車艙內部人員的熱舒適感受。
Fluid flow and heat transfer phenomena in nowadays has been exist in nature and others field, while the numerical analysis of CFD (Computational Fluid Dynamics) can simulate these complex physical phenomena systematically. In recent years CFD has widely been used to analyze the airflow structure of vehicular cabin, which to step out the development of research time and resources saving, and accurate analysis of various thermo-flow field inside a vehicular cabin. This study will carry out the simulation and analysis of thermo-flow field for Ford E350 cabin that establish the influence of the thermal comfort of manikins which the internal configuration were already modified. Research methods used CFD software - FLUENT module for the thermo-flow of temperature, pressure and velocity distribution, and take into account the solar radiation, physiological heat of manikins and heat sources, in addition, the grid adaption technology will use to increase the accuracy of simulation results and quote from PMV and PPD index of ISO 7730 to estimate the thermal comfort of manikins. Simulation results show that by the change of internal configuration of vehicular cabin, the thermal comfort is not generally comfortable, because the vent location of inlet and outlet can not removed the heat effectively from the inside, in the future, we can apply an air flow management technique to improve the thermal comfort for its.
目 錄
摘 要 i
ABSTRACT ii
誌 謝 iii
目 錄 iv
第一章 緒論 1
1.1 前言 1
1.1.1 研究背景 1
1.1.2 研究動機 2
1.2 文獻探討 3
1.2.1 車艙內氣流場模擬 3
1.2.2 熱舒適評估 7
1.2.3 網格自適應技術 11
1.3 研究目的 13
第二章 研究方法與進行步驟 14
2.1 研究方法 14
2.2 進行步驟 15
2.2.1 3-D實體車艙模型建立 15
2.2.2 網格系統 16
2.2.3 數學模型 17
第三章 數值方法 21
3.1 對流-擴散問題的離散格式 22
3.2 壓力-速度耦合問題處理 24
3.4 自適應網格 28
3.4 模擬設定 31
第四章 結果與討論 35
4.1 車艙中心線上之速度無因次化分析 35
4.2 溫度場分析 36
4.3 壓力場分析 39
4.4 空氣流體徑線軌跡分析 42
4.5 人員舒適度評估 43
第五章 結論與未來展望 50
參考文獻 51
符號彙編 53
[1] 陶文銓,數值傳熱學,科學出版社,2003年,第1-5頁。
[2]A. Aroussi and S. Aghil, “Characterization of The Flow Field in a Passenger Car Model, “Optical Diagnostics in Engineering, vol. 4(1), p.1-15, 2000.
[3]M. Mann and M. Haigis, “Numerical Investigation of the Ventilation and Thermal Comfort in a Commuter Train,” 3rd MIRA International Vehicle Aerodynamics Conference, 2000.
[4]K. Ono, H. Matsumoto, and R. Himeno, “An Application of Volume Rendering Visualization Technique to the HAVC Design in a Vehicle Cabin,” JSFCD, 2000.
[5]K. Hagstrom, E. Sandberg, H. Koskela, and T. Hantalampi, “Classification for the room air conditioning strategies,” Building and Environment, vol. 35, p.699-707, 2000.
[6]A. Fujita, J. Kanemaru, H. Nakagawa, and Y. Ozeki, “Numerical Simulation to Predict the Thermal Environment inside a Car Cabin,” JSAE, 2001.
[7]L. Huang and T. Han, “Validation of 3-D Passenger Compartment Hot Soak and Cool-Down Analysis for Virtual Thermal Comfort Engineering,” SAE Paper 2002-01-1304, March. 2002.
[8]Martinho, N.A.G., Ramos, J.A.E., and Silva, M.C.G., “Thermal Environment in the Cabin of a Multi Purpose Vehicle,” 8th International Conference of Air Distribution in Rooms, Roomvent, 2002.
[9]O. HÄLSA, “Comfort Climate Evaluation with Thermal Manikin Methods and Computer Simulation Models,” Department of Technology and Built Environment, University of Gävle, Sweden, 2004.
[10]T. Han and L. Huang, “A Sensitivity Study of Occupant Thermal Comfort in a Cabin Using Virtual Thermal Comfort Engineering,” SAE Paper 2002-01-1509, March. 2005.
[11]M. Parrino, R. Carnino, G. Romitelli, M. Dongiovanni, and A. Mannoni, “Investigation of Pre-Cooling Effectiveness in Vehicle Cabin Cool-Down,” SAE Paper 2004-01-1380, March. 2004.
[12]J. Currle and J. Maue, “Numerical Study of the Influence of Air Vent Area and Air Mass Flux on the Thermal Comfort of Car Occupants,” SAE Paper 2000-01-0980, March. 2000.
[13]張烔堡、黃志達、高浚富、李俊承,“台灣地區車輛最大空調負載與冷凍能力研究”,2007年車輛工程學刊,2007,pp.19-36。
[14]林憲德、黃國倉, “空調熱負荷計算標準之研究”,2005年能源與冷凍空調學術研討會,2005,pp.1-18。
[15]“Moderate Thermal Environment – Determination of The PMV and PPD Indices and Specification of The Conditions for Thermal Comfort,”International Standard ISO 7730. , 1994.
[16]ASHRAE, “Thermal Comfort,” ASHRAE Handbook-1997 Fundamentals, American Society of Heating, Refrigerating, and Air- Conditioning Engineers, Inc., Atlanta, PP. 8.1-8.28, 1982.
[17]劉昶賢,汽車座艙空調系統對乘客熱舒適之研究,碩士論文,國立成功大學,台南,96年。
[18]ASHRAE, “Handbook-Thermal Environmental Conditions for Human Occupancy,” American Society of Heating Refrigerating and Air-Condition Engineers, Atlanta, GA, 1992.
[19]陶文銓,計算傳熱學的進代發展,科學出版社,2001年,第87-91頁。
[20]J. F. Thompson, “Numerical Grid Generation, “North Holland, 1988.
[21]A. Hay and M. Visonneau, “Computation of free-surface flows with mesh adaption,” International Journal for Numerical Methods in Fluids, 2005.
[22]FLUENT 6.3 User’s Guide, FLUENT Inc.2006.
[23]S. V. Patankar, “Numerical Heat Transfer and Flow,” McGraw-Hill, New York, 1980.
[24]吳旻峰,智慧型車廂內之徵氣候控制,碩士論文,大葉大學,彰化,92年。
[25]莊振賢,國人舒適感受調查研究,碩士論文,國立台北科技大學,台北,民國90年。
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top