Courses » Multiphase Microfluidics

Multiphase Microfluidics

About the Course:

With the advancement in manufacturing technology in past few decades, the trend towards miniaturization has accelerated in several industries. In chemical process industries, the viability of compact heat exchangers, microreactors for process intensification is being explored because of small diffusion lengths, high interfacial area density and relatively safe operation. Most of these equipments involve multiphase flows and their design requires a fundamental understanding of heat, mass and momentum transport in multiphase flow in microchannels. This course is aimed at introducing the students with the fundamental principles as well as recent developments in the area of multiphase flow at the small scale.

Intended Audience: 
  1. Postgraduate (M Tech and PhD) and final year undergraduate student from chemical, mechanical engineering disciplines.
  2. Industry practitioners from chemical micro-processing, electronics cooling and biomedical industry
Course is primarily a PG course but can be taken by third/final year students as well.


A basic course in Fluid Mechanics

Industries that will recognize this course:

Thermax, General Electric, Syrris, Blacktrace/Dolomite

Instructor Details:

Dr. Raghvendra Gupta is assistant professor in Department of Chemical Engineering at Indian Institute of technology Guwahati, India. His research interests are in the area of multiphase flows, microfluidics and biofluid mechanics.

Course Layout

  1. Week 1:Introduction: Motivation, applications, definitions, size effects
  2. Week 2:Interfacial Phenomena: Capillarity, wetting and dewetting behavior, Contact line dynamics
  3. Week 3:Gas liquid and liquid-liquid flow in microchannels: Flow regimes; pressure drop and phase distribution
  4. Week 4:Transport processes in Taylor Flow in microchannels
  5. Week 5:Bubble and droplet generation; annular and slug-annular flow regimes
  6. Week 6:Gas-solid flow in microchannels; Inertial microfluidics; multiphase microreactors
  7. Week 7:Condesation, evaporation and boiling in microchannels
  8. Week 8:Experimental and computational techniques to study multiphase flow in microchannels

Suggested Reading:
  1. Two-phase flow, boiling and condensation in conventional and miniature systems, Ghiaasiaan, S. M., 2008, Cambridge University Press.
  2. Tabeling, P., Introduction to Microfluidics, 2005, Oxford University Press.
  3. Hessel, V., Renken, Albert, Schouten, J. C., Yoshida, J.-I., Micro Process Engineering, Selected chapters, 2009, Wiley-VCH Verlag GmbH & Co
  4. In addition several review papers would be prescribed as reference material. A summary of these would be provided as lecture notes.

Certification Exam:

  • April 28 (Saturday) and April 29 (Sunday) :  Afternoon session: 2pm to 5pm 
  • Registration url: Announcements will be made when the registration form is open for registrations.
  • The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published.

  • Final score will be calculated as : 25% assignment score + 75% final exam score .
  • 25% assignment score is calculated as 25% of average of best 6 out of 8 assignments.
  • E-Certificate will be given to those who register and write the exam and score greater than or equal to 40% final score. Certificate will have your name, photograph and the score in the final exam with the breakup. It will have the logos of NPTEL and Indian Institute of Technology Guwahati. It will be e-verifiable at nptel.ac.in/noc.