Simulation of Pressure-Driven and Channel-Based Microfluidics on Different Abstract Levels: A Case Study.

Area of Science:

• Microfluidics and Lab-on-a-Chip (LoC) device design.
• Computational Fluid Dynamics (CFD) simulations.

Background:

• Designing microfluidic devices is complex and time-consuming.
• Simulation tools can simplify the design process.
• Various simulation abstraction levels exist, from 1D analytical to 3D CFD, each with trade-offs.

Purpose of the Study:

• To provide an overview of different microfluidic simulation approaches.
• To evaluate the performance of 1D, 2D, and 3D CFD methods.
• To assist designers and researchers in selecting appropriate simulation tools.

Main Methods:

• Consideration of 1D simulation approaches based on analytical solutions.
• Application of two 3D Computational Fluid Dynamics (CFD) methods: Finite Volume Method (FVM) and Lattice-Boltzmann Method (LBM).
• Case study analysis using three representative microfluidic use cases: non-Newtonian flow, fluid mixing, and droplet behavior.

Main Results:

• Analysis of accuracy and computational time trade-offs for different simulation methods.
• Demonstration of performance differences across 1D, FVM, and LBM for specific microfluidic scenarios.
• Identification of current limitations and capabilities of various simulation approaches.

Conclusions:

• Awareness of simulation method trade-offs is often lacking among designers.
• The study provides insights into the suitability of different simulation approaches for specific microfluidic design tasks.
• Guidance is offered to help researchers make informed decisions on simulation tool selection for Lab-on-a-Chip development.