物理通报
物理通報
물리통보
PHYSICS BULLETIN
2012年
11期
31-34
,共4页
驻波%能量%能量密度%能流密度%计算机模拟
駐波%能量%能量密度%能流密度%計算機模擬
주파%능량%능량밀도%능류밀도%계산궤모의
Standing wave%energy%energy density%energy flux density%computer simulation
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．
分析瞭駐波能量、能量密度、能流密度在傳播過程中的轉換規律．用Matlab程序實現瞭駐波波形、能量密度、能流密度的計算機模擬，形象地展現瞭駐波傳播過程中的能量變化，計算機模擬結果與理論分析所得結果一緻．最後得到瞭在振動過程中駐波能量不斷地從波節到波腹間相互轉移，而從整體看駐波不傳播任何能量的結論．
분석료주파능량、능량밀도、능류밀도재전파과정중적전환규률．용Matlab정서실현료주파파형、능량밀도、능류밀도적계산궤모의，형상지전현료주파전파과정중적능량변화，계산궤모의결과여이론분석소득결과일치．최후득도료재진동과정중주파능량불단지종파절도파복간상호전이，이종정체간주파불전파임하능량적결론．
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
