DES( Data Encryption Standard)算法，于1977年得到美國政府的正式許可，是一種用56位密鑰來加密64位數據的方法。雖然56位密鑰的DES算法已經風光不在,而且常有用Des加密的明文被破譯的報道,但是了解一下昔日美國的標準加密算法總是有益的,而且目前DES算法得到了廣泛的應用
二維SIMPLEC程序，包含三個project:二維穩態傳熱，常粘度系數湍流的動態模擬，湍流中被動標量擴散（基于時均的 k –ε方程．
同時壓縮包中還有詳細的說明文檔．
注意：本程序只限于學習用途，切勿作商業用途，作者享有對此代碼及使用目的的最終解釋權！
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Cccc This computer program was copied from the graduate student course program
Cccc of the University of Minnesota. Part of it was re-formulated to meet the
Cccc personal computer environment. Some inappropriate expressions were also
Cccc corrected. The program is used only for teaching purpose. No part of it
Cccc may be published. You may use it as a frame to re-develop your own code
Cccc for research purpose. XJTU Instructor, 1995.11
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