What is Dean Flow? | Microfluidic Inertia Separation (Part 1) | FEniCS CFD

Описание: In this video, we study Dean Drag forces, secondary flow, in curved and spiral microfluidic channels. Inertia microfluidics uses controlled flow dynamics to drive separation without any external forces. Control of the flow dynamics, Dean Drag forces, can lead to precise separation of polydisperse, mixed, particles and / or cells solutions. The particle / cell separation avoids contamination and fouling and are useful for low cost, point of care devices.

Part 2 will explore Lagrangian Particle Tracking which tracks particles based on the size and density. The particle tracking builds upon the work here where the particles and / or cells are affected by the secondary flow dynamics, Dean Drag forces.

Read more here: https://nanomedic.org/inertial-microf...

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A variety of different solvers are available in BERNAISE, Binary ElectRohydrodyNAmIc SolvEr, using FEniCS back-end for solving partial differential equations. All free and open-source running in Python.

Check out the code used here: https://github.com/MattH688/BERNAISE
Here is the example problem used: https://github.com/MattH688/BERNAISE/...
CAD to mesh wiki: https://github.com/MattH688/BERNAISE/...
CFD visualisation was done using Paraview: https://www.paraview.org/

Music is HTML by Riot provided by the YouTube Audio Library Free Music.

--------------Contents of this video--------------
00:00 - Intro
01:23 - Inertia Separation Microfluidic Devices
01:45 - What Are Dean Drag forces?
02:09 - Dean Number Equation
03:42 - How do we model Dean Drag forces?
04:07 - CAD to mesh
05:16 - Problem Parameters
05:48 - Finding The Secondary Flow Plane
07:33 - Viewing Dean Drag Forces
08:03 - Decreasing The Velocity
08:22 - Increasing Viscosity
08:57 - Increasing Density
09:49 - Comparing All The Results
10:07 - Conclusion

#Separation #Simulation #Inertia