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×î½üͶÁËÆª¸å×Ó£¬ÌÖÂÛµÄÊÇÈܼÁÓë¾§ÃæÏ໥×÷ÓöԾ§ÌåÐÎòµÄÓ°Ï죬½¨Á¢ÁËÒ»¸öÈܼÁÓë¾§ÃæÏ໥×÷ÓõÄÄ£ÐͽøÐзÖ×Ó¶¯Á¦Ñ§¼ÆË㣬²ÉÓÃNPTϵ×Û¡£Éó¸åÈËÌá³öÈçϵÄÒâ¼û£¬ÈÏΪ¼ÆËãûÓдﵽƽºâ£¬µ«¾ßÌåµÄÎÒ¿´µÃ²»Ì«Ã÷°×£¬ÊÇÒªÑÓ³¤¼ÆËãµÄʱ¼ä³ß¶ÈÂð£¿ÈçºÎÅжÏÌåϵÒѾ´ïµ½Æ½ºâÁË£¿ÎÒ²»ÊÇרҵ×öÄ£Äâ¼ÆËãµÄ£¬ÕâЩ¶«Î÷¶¼ÊÇÎÒ×ÔѧµÄ£¬Àϰå¶ÔÕâ·½ÃæÒ²²»Á˽⣬»¹Çë¸÷λ¸ßÈ˲»Áߴͽ̰¡¡£ Indeed, NPT molecular dynamics at atmospheric pressure and at room temperature is required in order of relax all the tensions and compressions within the simulated cell. Generally, when NPT molecular dynamics is performed on a crystal structure whose coordinates are taken from X-Ray diffraction experiments, the density decreases by 5 to 15 %, thus the simulated cube expands. To me this is extremely important as all the estimated quantities that derive from the model are dependant on such initial treatment. I don't think that 5ps at 500K followed by 50 ps at 298K is enough to obtain a system properly equilibrated. |
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wangyulinup
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11Â¥2014-06-26 15:25:10
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2Â¥2011-06-27 12:12:50
rzhheart
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youzhizhe(½ð±Ò+2): лл½»Á÷¡£ 2011-06-30 19:32:33
ЦÎÊÌì(½ð±Ò+50): 2011-06-30 19:48:09
youzhizhe(½ð±Ò+2): лл½»Á÷¡£ 2011-06-30 19:32:33
ЦÎÊÌì(½ð±Ò+50): 2011-06-30 19:48:09
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I don't think that 5ps at 500K followed by 50 ps at 298K is enough to obtain a system properly equilibrated¡£ Õâ¸öÊÇ˵Äã³Úԥʱ¼ä²»¹»~ Ã²ËÆhelpÀïÃæËµµÄÊÇÏÈ10ps(NPT)Ö®ºóÔÙ100ps(NVT)£¬ÕâÓ¦¸ÃËãÊÇ×î¶ÌµÄ³Úԥʱ¼äÁË¡£¡£¡£ ¼ÈÈ»ÊÇ·¢ÎÄÕ£¬¾Í²»ÄÜÉÙÓÚÕâ¸öʱ¼ä°É£¡ |

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youzhizhe: ½¨ÒéÑ¡Ôñ¡°ÒýÓûظ´¡±¡£ 2011-06-30 19:33:08
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