<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In the present work, two geometrically similar passive geometries with dumbbell shape were designed to perturb the dominating viscous forces in the low Reynolds number (Re) flows of the fluids. The geometries were designated as PDM-I and PDM-II, in which all the linear dimensions were related by a constant scale factor of two. Mixing efficiencies and pressure drops of the species at various Reynolds number (Re) were calculated to estimate the scaling effect validations. Finally, the geometrically similar PDM geometries were fabricated in Polydimethylsiloxane (PDMS) polymer to evaluate the scaling effect on the mixing efficiencies of the dyes and validated with the simulation results of species mixing.</p></abstract>

In the present work, two geometrically similar passive geometries with dumbbell shape were designed to perturb the dominating viscous forces in the low Reynolds number (Re) flows of the fluids. The geometries were designated as PDM-I and PDM-II, in which all the linear dimensions were related by a constant scale factor of two. Mixing efficiencies and pressure drops of the species at various Reynolds number (Re) were calculated to estimate the scaling effect validations. Finally, the geometrically similar PDM geometries were fabricated in Polydimethylsiloxane (PDMS) polymer to evaluate the scaling effect on the mixing efficiencies of the dyes and validated with the simulation results of species mixing.

Geometrically Similar Rectangular Passive Micromixers and the Scaling Validity on Mixing Efficiency and Pressure Drops

Department of Applied Physics, Defence Institute of Advanced Technology

Centre for Nanobioscience, Agharkar Research Institute

Department of Mechanical Engineering, Defence Institute of Advanced Technology

Strojnícky časopis - Journal of Mechanical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

In the present work, two geometrically similar passive geometries with dumbbell shape were designed to perturb the dominating viscous forces in the low...

Geometrically Similar Rectangular Passive Micromixers and the Scaling Validity on Mixing Efficiency and Pressure Drops

Published Online: May 31, 2019

Page range: 69 - 84

DOI: https://doi.org/10.2478/scjme-2019-0006

Keywords
Passive micromixer, CFD, rectangular dumbbell, Polydimethylsiloxane (PDMS)

© 2019 Naresh Veldurthi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Geometrically Similar Rectangular Passive Micromixers and the Scaling Validity on Mixing Efficiency and Pressure Drops

Published Online: May 31, 2019

Page range: 69 - 84

DOI: https://doi.org/10.2478/scjme-2019-0006

KeywordsPassive micromixer, CFD, rectangular dumbbell, Polydimethylsiloxane (PDMS)

© 2019 Naresh Veldurthi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Passive micromixer, CFD, rectangular dumbbell, Polydimethylsiloxane (PDMS)