new compressible fluid equations with unified convection diffusion type 統(tǒng)一的對(duì)流擴(kuò)散型可壓縮流體力學(xué)方程與解法
the motion of water flow can be described by the dynamics fluid equation, such as 2d navier-stokes equation 水流的運(yùn)動(dòng)規(guī)律由一個(gè)淺水波方程,即一個(gè)二維的navier-stokes方程來描述。
based on chapter 2, mathematic model to simulate solute movements in groundwater is established in chapter 3 . in order to gain the solution of fluid equation, adi method is used to calculate 對(duì)水質(zhì)方程,用有限元法求解,通過區(qū)域剖分和插值方法將描述溶質(zhì)運(yùn)移的定解問題化為代數(shù)方程組進(jìn)行求解。
(3 ) on basis of the result of equilibrium gravitating potential in a gravitational system, we explain the phenomenon of scale-free peculiar velocity in the universe by studying cosmic fluid equations . furthermore, we reexamine the issue in the approach of generalized statistical mechanics (3)我們根據(jù)多體引力系統(tǒng)中得出的平衡引力勢(shì)的形式,結(jié)合宇宙流體力學(xué)解釋了ostriker提到的宇宙中速度與尺度無關(guān)(scale-free)的現(xiàn)象,并在廣義統(tǒng)計(jì)力學(xué)范疇下進(jìn)行了討論。