摘要
本文避开了不可压缩粘滞流体运动的一般理论,即解边界条件下的连续性方程和纳维叶——斯托克斯方程,而仅依据粘滞流体作稳定直线层流的牛顿粘滞定律和牛顿运动定律,应用柱坐标较简明地导出了椭园柱管管流的泊肃叶(J.L.M.Poiseuille)公式。其推导物理图象清晰,意义直观明确。
This paper avoids the gencral thcory about the movement ofuncomprcsstble viscous nuid,that is,to SoIvc the continuiLy cquation and Navicr—Stokescquation,but only on the basis of Ncwton＇s ViscidiLy Law of ViSCOuS uid that is in stablclinearIayer current and Newton’s Movcmcnt Law,it appIys cvjnder coordinate to deducethe cIiptic cyindcr tube fube’s poiscuilic ’formular.The dcducLion shows cleftr physical imagc and the p1ysical meaning is dirccIy percoivcd and explicit.
