摘要
我们报导水 withSP2 潜力的玻璃转变的计算机模拟研究。使过程凉下来上的散开系数和过量熵的温度依赖是计算的。散开系数和过量熵在 160 K 显示出一个裂缝点,这被发现。我们的结果支持玻璃转变温度是 160 K 的观点。根据计算粘性,我们获得是 326 的水的一个脆弱索引,它比以前接受的价值大得多。
We report a computer simulation study of the glass transition of water with SP2 potential. The temperature dependences of the diffusion coefficient and the excess entropy on cooling process are calculated. It is found that both the diffusion coefficient and the excess entropy show a break point at 160K. Our results support the viewpoint that the glass transition temperature is 160K. According to the calculated viscosity, we obtain a fragility index of water to be 326, which is much larger than the value accepted before.