驻波的能量分析与MATLAB模拟  

Analysis of Standing Wave Energy Based On the Matlab Software

作　　者：徐宗瑜[1] 胡小克[1] 朱卫华[2] 

机构地区：[1]河海大学计算机及信息学院,江苏南京210098 [2]河海大学理学院,江苏南京210098

出　　处：《物理通报》2012年第11期31-34,共4页Physics Bulletin

摘　　要：分析了驻波能量、能量密度、能流密度在传播过程中的转换规律．用Matlab程序实现了驻波波形、能量密度、能流密度的计算机模拟，形象地展现了驻波传播过程中的能量变化，计算机模拟结果与理论分析所得结果一致．最后得到了在振动过程中驻波能量不断地从波节到波腹间相互转移，而从整体看驻波不传播任何能量的结论．Give derivation to some fundamental physical quantity of standing wave like the kinetic energy ,the potential energy,the energy and the energy density. Then analyse the energy conversion pattern during the standing wave propagation process from three angles of energy, energy density, energy flux density. Realized the computer simulation of the waveform,energy,energy flux density of standing wave with the matlab software, better show the energy changes during the standing wave propagation process. The results of computer simulation are consistent with the theoretical analysis results. Finally,we obtained the results that during the vibration process,the energy of standing wave constantly transfers from the node to the loop,and from the overall look,the standing wave doesn＇t spread energy

关 键 词：驻波 能量 能量密度 能流密度 计算机模拟 

分 类 号：O4[理学—物理] TP391.9[自动化与计算机技术—计算机应用技术]