CBE 30355 - Lecture Notes - Oct. 17, 2019

Announcements

Class notes

The main points of the lecture were

• Lubrication Flows

Goals:

• Scale the transport equations to get the Reynolds Lubrication Equation.
• Apply this equation to calculate the forces in simple lubrication flows.

Reading

• The class notes.
• BS&L, chapter 4

Additional Readings:

Lubrication flows are just one example of flows at low Reynolds numbers where inertia may be neglected. One active area of research in low Re system is the field of microfluidics, in which chemical laboratories are reduced to a microscale and reactants are pumped around through microchannels etched on a chip. Wikipedia does a decent job of describing some of the uses of this technology. That article can be found here.

Demonstration:

Lubrication: Detachment of a Disk From a Plane