Vortex Cores of Inertial Particles

Area of Science:

• Fluid Dynamics
• Particle Physics
• Computational Science

Background:

• Traditional vortex coreline extraction methods focus on massless particles.
• Practical applications require understanding the behavior of inertial particles in fluid flows.
• Existing methods do not adequately capture the dynamics of inertial particles.

Purpose of the Study:

• To develop novel strategies for extracting corelines of swirling inertial particle motion.
• To account for particle properties like density, diameter, fluid viscosity, and gravity.
• To extend coreline extraction to both steady and unsteady 3D vector fields.

Main Methods:

• Deducing local swirling behavior from the autonomous inertial motion Ordinary Differential Equation (ODE).
• Utilizing particle density estimation to identify inertial attractors.
• Applying parallel vector operations for coreline extraction.

Main Results:

• Successfully extracted corelines for swirling inertial particles in benchmark datasets.
• Demonstrated the effectiveness of two distinct coreline extraction strategies.
• Quantified the influence of particle properties on coreline trajectories.

Conclusions:

• The developed methods accurately identify inertial particle corelines, crucial for engineering applications.
• These techniques offer a significant advancement over traditional massless coreline extraction.
• The findings provide valuable insights into particle behavior in complex fluid flows.