Narrowing RTD in Coiled Tubes

This lecture discusses the narrowing of Residence Time Distribution (RTD) in coiled tubes, focusing on the characteristic parameter Dean-number and the generation of Dean vortices for radial mixing. It also covers the impact of flow inverters on RTD, emphasizing the enhancement of radial mixing through centrifugal forces. Furthermore, it explores the design parameters and velocity contours in microreactors, highlighting the importance of coil diameter and pitch distance. The lecture concludes with a comparison of RTD in straight tubes versus coiled tubes at different Reynolds numbers. Various strategies to improve RTD in microreactors are presented, such as using segmented flow and chaotic microreactors.