NUMERICAL STUDY ON FORMATION OF LIQUID FLOW EMERGING FROM A CAPILLARY EMITTER DUE TO ELECTRIC POTENTIAL EFFECTS

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DASTOURANI HADI; JAHANNAMA MOHAMMAD REZA; ESLAMI MAJD ABDOLLAH

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:5 Page(s): 367-378

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Information Journal Paper

Title

NUMERICAL STUDY ON FORMATION OF LIQUID FLOW EMERGING FROM A CAPILLARY EMITTER DUE TO ELECTRIC POTENTIAL EFFECTS

Author(s)

DASTOURANI HADI | JAHANNAMA MOHAMMAD REZA | ESLAMI MAJD ABDOLLAH | Issue Writer Certificate

Keywords

CONE-JET MODEQ1

ELECTROSPRAYQ2

ELECTRIC POTENTIALQ1

FLOW RATELQ2

NUMERICAL SIMULATIONQ1

Abstract

Electrospray is a branch of the scientific area of electro hydrodynamics which is based on electrical charging of liquids. The ELECTROSPRAY governing equations are a combination of hydrodynamic and electrostatic equations to which the addition of liquid breakup process escalates their complexity. This research work aims at developing a numerical solver to simulate the ELECTROSPRAY process in an emitter disc configuration using Heptane as a working liquid under various electrical potentials. The simulation results in comparison with CFD and experimental data show good agreement both quantitatively and qualitatively. The results clearly have captured the formation of liquid flow profiles at the emitter exit, demonstrating various ELECTROSPRAY modes. These modes initiate a micro dripping mode at the lowest voltage, i.e. 3.5kV, prompting consecutively to spindle and pulsating CONE-JET MODEs and ending in a stable CONE-JET MODE at the highest charging voltage, i.e. 6.5kV. In addition, it is also observed that the liquid cone and the vortex shaped within it would shrink as an increase in the ELECTRIC POTENTIAL is imposed. Although the increase in ELECTRIC POTENTIAL results in rise of the maximum magnitudes of electric field and velocity, the electric charge accumulation at all ELECTRIC POTENTIAL values occurs on the outer surface of the liquid flow, implying its electrical conductivity.

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APA: Copy

DASTOURANI, HADI, JAHANNAMA, MOHAMMAD REZA, & ESLAMI MAJD, ABDOLLAH. (2016). NUMERICAL STUDY ON FORMATION OF LIQUID FLOW EMERGING FROM A CAPILLARY EMITTER DUE TO ELECTRIC POTENTIAL EFFECTS. MODARES MECHANICAL ENGINEERING, 16(5), 367-378. SID. https://sid.ir/paper/177932/en

Vancouver: Copy

DASTOURANI HADI, JAHANNAMA MOHAMMAD REZA, ESLAMI MAJD ABDOLLAH. NUMERICAL STUDY ON FORMATION OF LIQUID FLOW EMERGING FROM A CAPILLARY EMITTER DUE TO ELECTRIC POTENTIAL EFFECTS. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(5):367-378. Available from: https://sid.ir/paper/177932/en

IEEE: Copy

HADI DASTOURANI, MOHAMMAD REZA JAHANNAMA, and ABDOLLAH ESLAMI MAJD, “NUMERICAL STUDY ON FORMATION OF LIQUID FLOW EMERGING FROM A CAPILLARY EMITTER DUE TO ELECTRIC POTENTIAL EFFECTS,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 5, pp. 367–378, 2016, [Online]. Available: https://sid.ir/paper/177932/en

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