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本文针对微细通道内流体的流动和燃烧提出了近壁面处存在滞止流的新观点,通过一定的理论分析证明了滞止流存在的可能性,并基于燃烧特性,采用理论方法提出了一种滞止流厚度的定义方法。基于近壁面处滞止流可能的速度特性,存在燃烧时,提出了可采用基于沿y方向扩散速度u_d和沿x方向流动速度u_f变化特性定义滞止流厚度,当u_d=1000uf时所获得流体转折高度y_c即为滞止流的厚度。
Aiming at the flow and combustion of the fluid in the microchannel, a new viewpoint of the existence of stagnation flow at the near wall is proposed in this paper. The possibility of stagnation flow is proved by some theoretical analysis. Based on the combustion characteristics, a theoretical method is proposed Hysteresis flow thickness of the definition of the method. Based on the possible velocity characteristics of the stagnant flow at the near wall, when combustion is present, it is proposed that the thickness of the stagnant flow can be defined based on the velocity u_d along the y-direction and the velocity u_f along the x-direction. When u_d = 1000uf, Turning height y_c is the thickness of stagnant flow.