Assessment of behavioral modification techniques through immersed boundary method simulation of binary particle interactions in isotropic turbulence

Behavioral modification effects for particle-laden turbulent flows are developed and assessed through high-fidelity modeling using an implementation of the mirroring ghost-cell based immersed boundary method in conjunction with direct numerical simulation. The continuous phase uses open-source spectral element method-based solver, Nek5000. A dynamic form is described that also solves interparticle attraction repulsion forces allowing nontrivial collision outcomes such as agglomeration. solid-phase solver validated against empirical drag coefficient data well spherical bouncing experiments excellent agreement obtained at low particle Reynolds numbers. Periodic boxes homogeneous isotropic turbulence generated linear forcing Reλ=29, 51, 120. Ensembles structure-resolved binary collisions then studied within these boxes, considering variation six key mechanical chemical parameters. These restitution, Hamaker constant, surface charge potential, inverse Debye length, temperature, number. It established number have greatest impact on resulting motion interaction by probability density functions intersurfacial distance relative velocities. Suggestions real-world procedures modify parameters order to either encourage or discourage potential agglomeration discussed.