论文标题
环境压力在碰撞喷气机中的作用
Role of Ambient Pressure on Colliding Jets
论文作者
论文摘要
在这封信中，通过实验检查了在升高和减少的气态环境压力下倾斜的碰撞喷气机的合并-VS传播响应。水和N-四烷的实验证实，当冲击速度增加时，从合并到弹跳，然后再合并的碰撞结果过渡。以前报道的大气压力的行为现在在升高和减轻的压力下也已经观察到。新的结果还表明，在下面的临界压力（四核的0.9 bar和5 bar）之下的压力增加了压力会促进弹跳（扩大弹跳制度），而除此之外，合并得以促进（减少弹跳制度）。这导致压力对碰撞喷气机的非钙化结果的非单调影响，这先前尚未报道。这项研究提供了在减轻和升高压力下碰撞喷气机的新行为的证据，这与研究良好的液滴碰撞碰撞不同。
In this letter, the merging-vs-bouncing response of obliquely-oriented colliding jets under elevated and reduced gaseous environment pressures was experimentally examined. Experiments with water and n-tetradecane confirmed that the collision outcome transitions from merging to bouncing, and then to merging again, when the impact velocity was increased. This behavior which was previously reported for atmospheric pressure, has now also been observed at elevated and reduced pressures. New results also show that there exists a critical pressure (0.9 bar for tetradecane and 5 bar for water) below which increasing pressure promotes bouncing (expands the bouncing regime), while beyond this, merging is promoted (reduces the bouncing regime) instead. This leads to a non-monotonic influence of pressure on the non-coalescence outcomes of collisional jets, which was not previously reported. The study provides evidence of new behaviors in colliding jets at reduced and elevated pressures, which differs from well-studied droplet-droplet collisions.
