在2003年3月開始SARS ( Severe Acute Respiratory Syndrome )侵襲台灣，政府迅速擴建許多一般病房，因此增加了許多隔離病房，而隔離病房因收容具有高度傳染力之病患，為維護同處於醫院內之人員健康，因此在隔離病房空調設計上均有特殊之規範，例如室內壓力的控制，換氣次數及室內空氣排除皆有明確的規範，美國CDC於1994提出指針，對於防止某些具傳染性病症之擴散(主要的是針對肺結核病)，應在相關醫療機構增設隔離室，以實施檢疫與醫療行為。
　　本研究中以商用套裝軟體FLUENT 6.1模擬分析隔離病房內部流場分佈情形，在這模擬中假設二氧化碳（CO2）為病患所呼出含有病菌的空氣，接著利用FLUENT 6.1軟體中移動網格模組進行病房內人員走動對隔離病房流場之影響，比較醫護人員在三種不同位置於病房內走動時對隔離病房流場之影響。

　　Due to the outbreak of SARS (Severe Acute Respirator Syndrome) in Taiwan in March of 2003, more than 15 hospitals were renovated into special hospitals for SARS patients. Isolation room is arranged for treated patients that have infectious disease. Isolation room must use special air condition and ventilation system designed to keep negative pressure in the room, so that health care worker and other patients can be protected. CDC of U.S. issued a guideline in 1994 pointing out that in order to prevent the spread of infectious disease (especially tuberculosis), isolation room is required to perform the medical treatment as well as for quarantine purposes.
　　This thesis used FLUENT 6.1 to simulate airflow field in the isolation room. The viruses spread from the patient are modeled by carbon dioxide (CO2). Using Dynamic mesh is used to simulate the influence for health care worker walking in room. Three different position while the health care worker is walking in room are simulated in this study.

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