受限於傳統通風環境研究方法在中氣候尺度限制，都市風廊道的探測一直是規劃者在都市熱島議題下面臨的挑戰。近年以地理資訊系統為平台，在側面投影面積指標基礎下，採用的最低成本路徑演算法( Least cost path, LCP)屬於全域型的演算法，與流體的流動性質不同，可能造成風廊道預測上的失準或應用限制。

本研究嘗試結合多主體模擬系統(Agent-based modeling, ABM) ，由下而上模擬概念的優點，將空氣粒子想為決策者，並承過去研究在「風會往低成本區域流動」的假設下，提出二種簡易且符合空氣動力學理論下的空氣流動規則，包括「相鄰有效網格最低成本移動法」(Least Cost Effective Adjacency, LCEA)、「相鄰有效網格成本機率移動法」(Cost probability of Effective Adjacency, CPEA)。此外，透過兩處經實測校正後之計算流體力學(Computational fluid dynamics, CFD)模型，以接收者操作特徵曲線(Receiver Operating Characteristic Curve, ROC-curve)量化各流動規則之解釋能力。

研究結果顯示，ABM風廊道探測模型可改善LCP之不足，且各流動規則可解釋部分都市風環境效應，並具有空間上之適用性與高度之代表性。此模型可突破傳統通風環境研究方法之限制，尺度較大，且耗費時間、人力成本皆相對較少，有助於降低規劃者在都市尺度的風環境評估門檻，其簡化訊息量也有助於應用至指認風環境待改善區位、策略模擬等實務規劃中。

Designation of urban ventilation path is still a critical challenge for urban planners under the sustainable issue, because the Least cost path (LCP) algorithm, a global method adopted by recent studies to detect urban ventilation paths with Geographic Information Systems (GIS), is not quite in accordance with the fluid properties, and could affect the accuracy and application itself.

This study attempts to adopt Agent-based model (ABM) with the platform of GIS to propose two simple flowing rules based on treating air particles as intelligent individuals and the assumption that air particles might flow through the lowest value in terms of frontal area index (FAI), called least cost effective adjacency (LCEA) and cost probability of effective adjacency (CPEA). Tainan, Taiwan is the case and the explanatory power of each rule are evaluated and compared with field measurement and computational fluid dynamics model by the Receiver Operating Characteristic Curve (ROC-curve).

The result shows that ABM-based wind ventilation model could amend LCP algorithm. Each rule has its representative at spatial and height, and could be used to explain some phenomena of urban wind environment. In addition, lower cost of time consuming and human resource make it possible to break through the limitation of conventional method in large scale and lower the threshold for the urban planner. Furthermore, simplified information is also useful in practice to identify the location of improvement area, simulating different strategies, etc.

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(三)網站
3D立體熱流體模擬解析軟體「WindPerfect」，http://www.env-simulation.com/ch/index.html，環境技術模擬股份有限公司2010年12月26日。