| 格子气的声振荡衰减 |
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| 引用本文： | 陈宇,丁元国,刘旭,沈建国.格子气的声振荡衰减[J].大学物理,2003,22(6):7-9. |
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| 作者姓名： | 陈宇 丁元国 刘旭 沈建国 |
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| 作者单位： | 清华大学,物理系,北京,100084 |
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| 摘 要： | 采用格子气数值方法模拟了共振腔中气体声振荡衰减过程．计算结果表明：格子气中声振荡衰减的规律和经典理论结果一致；衰减系数随频率增加而减小，并且随密度增加而减小．该结果可以用来说明一些大学统计物理教科书中的一个经典例子存在不完善之处．本中采用了一种新的扭转9-bit格子气模型和并行计算方法，这些结果对今后研究格子气中的热声问题有参考价值．
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| 关 键 词： | 格子气 声振荡衰减 |
| 文章编号： | 1000-0712(2003)06-0007-03 |
| 修稿时间： | 2001年12月28 |
Attenuation of sound oscillation in lattice gas |
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| CHEN Yu,DING Yuan guo,LIU Xu,SHEN Jian guo.Attenuation of sound oscillation in lattice gas[J].College Physics,2003,22(6):7-9. |
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| Authors: | CHEN Yu DING Yuan guo LIU Xu SHEN Jian guo |
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| Abstract: | A lattice gas method is applied to simulate the attenuation of sound oscillation. Calculation results shows that sound attenuation in lattice gas agrees with the classical result. The attenuation coefficient decreases with increasing of frequency and the gas density. The simulation result can be used to illustrate the equilibrium process in undergraduate statistic physics. A rotated 9 bit lattice gas model and a parallel computation method are used. The results of this paper are valuable in further study of thermoacoustic problems. |
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| Keywords: | lattice gas attenuation of sound oscillation |
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