Controlling Stagnation Point of Swirl Based on Jet Velocity

Controlling the stagnation point of the swirl is the key technology to realize the quantitative and directional movement of particles. This paper proposes a swirl stagnation point control method based on jet velocity. By constructing a microfluidic dynamic model, the influence of jet velocity on the swirl stagnation point is simulated and analyzed, and the quantitative mapping relationship between jet velocity and the stagnation point is established. Eventually, the feasibility of the proposed method is verified by simulation. Collectively, this method provides a technical means for proactive control of the swirl stagnation point.