Document Type : Original Article

Authors

1 Aerospace Research Institute, Tehran, Iran

2 Aerospace Eng. Sharif University Tehran, Iran

3 Mechanic Eng., Azad University Tehran Markaz Branch, Tehran, Iran

10.22034/jast.2022.322220.1110

Abstract

In present research, the interaction between single liquid droplet with particles inside a porous media is investigated numerically in two dimensions. The He’s model is used to simulate two phase flow and multiple relaxation time collision operator is implemented to increase numerical stability. Simulations have performed in three non-dimensional body forces of 0.000108, 0.000144, 0.000180, porosity values of 0.75, 0.8, 0.85 and Ohnesorge range of 0.19-0.76. In the range of investigated non-dimensional parameters, two distinct physics of droplet trapping and break up have observed. The related results revels that for every values of investigated non-dimensional body forces and porosity, there is a critical Ohnesorge number that droplet breaks up occurs for larger values. This critical value decreases as non-dimensional body force and porosity increases. Based on these results, a droplet trapping or break up behavioral diagram is drown with respect to the investigated density ratio, Ohnsorge, Reynolds and Capilary numbers.

Keywords

Main Subjects

Article Title [Persian]

Droplet Breakup Analysis inside Porous Media at Different Porosities, Using LBM

Authors [Persian]

  • MohammadReza Salimi 1
  • Mohammad Taeibi Rahni 2
  • Abolfazl Amiri Hezaveh 3

1 , Aerospace Research Institute, Tehran, Iran

2 Aerospace Eng. Sharif University Tehran, Iran

3 Mechanic Eng., Azad University Tehran Markaz Branch, Tehran, Iran

Abstract [Persian]

In present research, the interaction between single liquid droplet with particles inside a porous media is investigated numerically in two dimensions. The He’s model is used to simulate two phase flow and multiple relaxation time collision operator is implemented to increase numerical stability. Simulations have performed in three non-dimensional body forces of 0.000108, 0.000144, 0.000180, porosity values of 0.75, 0.8, 0.85 and Ohnesorge range of 0.19-0.76. In the range of investigated non-dimensional parameters, two distinct physics of droplet trapping and break up have observed. The related results revels that for every values of investigated non-dimensional body forces and porosity, there is a critical Ohnesorge number that droplet breaks up occurs for larger values. This critical value decreases as non-dimensional body force and porosity increases. Based on these results, a droplet trapping or break up behavioral diagram is drown with respect to the investigated density ratio, Ohnsorge, Reynolds and Capilary numbers.

Keywords [Persian]

  • Porous media
  • Pore-scale
  • Two-phase Flow
  • Droplet
  • Lattice Boltzmann Method