The detailed experimental investigation of the distribution and evolution of the mean velocity profile were executed . the signal of instantaneous velocity, the energy spectra of velocity and wave characteristics in the boundary layer have been analyzed 对局部加热的水平平板下表面边界层内的时均速度的演化规律进行了详细的测量,同时对速度脉动信号以及速度能谱进行了分析,并对边界层内的波动特性进行了研究。
Abstract : the shaping equation of steamed bread in circular trough camber of shaping roller, the instantaneous velocity of its surface, and the strength by shaping roller were analyzed during shaping, then a theory base for the design of steamed bread shaping machine was provided 文摘:分析了馒头成型过程中成型辊上圆弧槽曲面内馒头生坯的运动方程,馒头表面动点瞬时速度及馒头成型时受力分析,为馒头成型机的设计提供了理论依据。