The mesoscale circulation determines basic air flow patterns in this area , which is typical in spring - summer season and in calm weather of autumn - winter season 中尺度環(huán)流是該地區(qū)低層大氣流動(dòng)的基本模態(tài),春夏季和秋冬季弱系統(tǒng)條件下的區(qū)域流動(dòng)大體按這種模態(tài)演變。
Furthermore , with the fourier series technique , the disturbance is discomposed into predominant mode and high frequency harmonics , and the nonlinear stability of the nonparallel boundary layer is studied 采用fourier級(jí)數(shù)的方法把擾動(dòng)波分解為基本模態(tài)和高頻諧波模態(tài),導(dǎo)出非平行非線性拋物化穩(wěn)定性方程。
With the fourier series technique , the disturbance is discomposed into predominant mode and high frequency harmonics . the nonlinear stability of three - dimensional disturbances for the blasius boundary layers is studied 借助fourier級(jí)數(shù)的方法將擾動(dòng)波分解為基本模態(tài)和高頻模態(tài),研究了三維擾動(dòng)的非線性邊界層穩(wěn)定性問(wèn)題。
To study the acoustic unsteady combustion of srm , built the acoustic model of chamber . deduced the little amplitude sound wave 3d equation , used the finite volume discrete method to simulate . got the vibration model of three kinds of chamber 為研究固體火箭發(fā)動(dòng)機(jī)聲不穩(wěn)定燃燒特性,建立了燃燒室內(nèi)聲學(xué)特性分析的物理數(shù)學(xué)模型,推導(dǎo)了小振幅聲波三維波動(dòng)方程,采用有限體積離散方法進(jìn)行仿真,得到圓柱型、四片翼柱彤和五片翼柱型藥柱三種燃燒室形狀聲學(xué)振動(dòng)基本模態(tài)