72th Annual Meeting of the APS Division of Fluid Dynamics (November 23, 2019 — November 26, 2019)

V0053: Stability inside the Taylor cone

Authors

• Archana Gupta, Indian Institute of Technology Kanpur, India
• Bal Krishan Mishra , Indian Institute of Technology Kanpur, India
• Pradipta Kumar Panigrahi, Indian Institute of Technology Kanpur, India

DOI: https://doi.org/10.1103/APS.DFD.2019.GFM.V0053

Many investigations have been carried out to investigate and characterize the electrospray and electrohydrodynamics atomization. The EHDA process comprises a Taylor cone, jet of a very small diameter and spray. A very few attempts have been made to look flow field inside the Taylor cone using numerical simulations. All these numerical simulations show a single common flow pattern which is axisymmetric to the nozzle axis.

Motivated by the past numerical investigation, experiments are carried out to obtain the real picture of the flow field inside the Taylor cone. The flow patterns are captured by suspending the glass spheres particle in working fluid and then the suspended particles are illuminated by Nd: YAG laser. The presented video demonstrates the observed flow patterns. These experiments show the existence of both symmetric and asymmetric flow field inside the Taylor cone. It also demonstrates that multiple flow patterns are possible inside the Taylor cone subjected to fluid properties and operating conditions.