4. Performance of Electrohydrodynamic Jets

This chapter presents the main results of the study on the performance of electrohydrodynamic jets, including:

  1. Axisymmetric jets for the study of the cone-jet transition and axial instabilities
  2. A three-dimensional model for the study of three-dimensional instabilities
  3. Adaptive-mesh modelling for the computation of jet atomization into droplet plumes.

This chapter is therefore divided into the following sections:


4.1. Axisymmetric Jets[1]

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Figure 2.1. Illustration of a surface-tension-driven wave instability.

4.2. Three-Dimensional Instabilities[2]

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Figure 2.2. Illustration of the bending/whipping instability.

4.3. Coulomb Expansion[3]

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Figure 2.3. Visualization of the electric field and electrostatic expansion.

References

  • [1] S. Cândido, J. C. Páscoa, On modal decomposition as surrogate for charge-conservative EHD modelling of Taylor Cone jets, International Journal of Engineering Science, 2023. DOI
  • [2] S. Cândido, J. C. Páscoa, Dynamics of three-dimensional electrohydrodynamic instabilities on Taylor cone jets using a numerical approach, Physics of Fluids, 2023. DOI
  • [3] S. Cândido, J. C. Páscoa, Numerical simulations of the atomization of electrified liquid jets with a 3D coupled VoF/LPT model, (forthcoming)
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