利用計算流體力學進行線上行人風場模擬與評估

本論文研究源自於淡江大學風工程研究中心多位教授所提出的「e-wind」計畫，計畫的定義為在網際網路上提供風工程計算、數據分析等資訊，其中一項概念即為線上行人風場舒適度評估之專家系統。　　建立系統對一般使用者而言簡易的操作介面以及表格化、圖形化的呈現方式是必要的，因此，將計算流體力學(CFD)的概念做資訊化、網路化的應用便是此研究的主要目標。如果能透過瀏覽器便可建立CFD分析模型、操作CFD軟體，計算出模擬結果並得知風場風速趨勢，如此便可大幅縮短建築設計和周遭環境風場評估所花費的時間，也可以讓學生更便於學習這方面相關的知識。　　根據e-wind中線上計算流體力學架構的初步理念，本研究建置了一線上行人風場評估系統：使用者將透過系統網站直接繪製欲測試的建築物模型，系統會將使用者輸入的各項資訊轉換後，建立計算流體力學的輸入檔，接下來將此輸入檔通過伺服器的操控，進行線上計算流體力學軟體的運算。經過運算後系統會讀取計算的輸出檔數據、將數據繪製行人風場剖面的風速等值線圖，供使用者觀察建築物週遭的風場趨勢。系統也會提供直接評估法表格，供使用者進行行人風場舒適度的狀態評估。最後，使用者也可以將數據資料壓縮與下載存檔至個人電腦中，並安裝Smokeview軟體做更進一步的觀察。

關鍵字

e-wind ；專家系統；行人風場； Apache HTTP Server ； PHP ；計算流體力學； FDS

並列摘要

The concept of the thesis derived from the project, e-wind, which was proposed by professors of Tamkang University Wind Engineering Research Center. This program aims at providing wind engineering computing, data analysis and other information on the Internet; one of them is an expert system of online pedestrian wind comfort assessment. It is crucial and necessary to establish a friendly interface and tabular with graphical presentation for common user. Therefore, how to integrate the concept of computational fluid dynamics (CFD) into informational and networking is the main objective of this study. If we can establishment of the CFD analysis model through a browser and perform remote CFD software that discern the trends of wind speed, it not only dramatically reduce the time spent by the architectural design and the ambient wind field assessment, but also allows students easy to learn knowledge in this area. According to the fundamental concept of the e-wind for online computational fluid dynamics framework, the study set up an online pedestrian comfort assessment system:, The users will be drawn directly through the website for the test model of the building, system will enter the information into a CFD input file. Followed by this input file to online CFD computing by the server manipulate, then system will read the output data of operation after calculated, and draw a wind speed contour map, and the users can view the wind field trend arround the buildings by the pedestrian wind field profile. System will also provide Absolute Assessment form for the users to assessment. Finally, the user can compress data and download it to PC, and install Smokeview for further observation.

並列關鍵字

e-wind ； Expert System ； Pedestrian Wind Environment ； Apache HTTP Server ； PHP ； CFD ； FDS

參考文獻

[1]Wang, Jenmu, Chung-Lin Fu and Chii-Ming Cheng. (2007). e-Wind: the core technology and framework (Conference Preprints). 12th International Conference on Wind Engineering, July 1-6, Cairns, Australia, Vol. 1, pp. 1079-1086.

[2]王人牧、鄭啟明（民98）。e-wind：建築耐風設計之資訊化解決方案。土木水利工程學會。Vol. 36, No. 1, pp. 51-59。

[6]PHP: Hypertext Preprocessor, http://php.net/, （Accessed Augst 2012）

[11] Mell, P. and Grance, T. (2009). The NIST Definition of Cloud Computing, National Institute of Standards and Technology 53, no. 6: 50.

[13]林晟漢（民98）。行人環境風場舒適度標準性評估與數值模擬可行性研究（碩士論文）。淡江大學土木工程學系。

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利用計算流體力學進行線上行人風場模擬與評估

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