Simulative Investigation of Different DLD Microsystem Designs with Increased Reynolds Numbers Using a Two-Way Coupled IBM-CFD/6-DOF Approach

Deterministic lateral displacement (DLD) microsystems are suitable for the size fractionation of particle suspensions in range 0.1 to 10 µm. To be able fractionate real particles beyond a laboratory scale, these systems have designed higher throughputs. High flow resistances and increasing clogging impose substantial challenges industrial operation. Simulative parameter studies improving design systems; example, position shape posts. A high-resolution, two-way coupled 6-DOF CFD-DEM approach was used study behavior different post shapes (circular triangular) sizes at Reynolds numbers. The results were compared with classical first streamline width theory. It shown that theory does not account all effects responsible separation. Furthermore, shift critical diameter smaller values could obtained when number also using triangular posts reduced spacing. These findings can help improve efficiency as spacing extended, thus reducing resistance probability clogging.