Courses » Multiphase Flows

Multiphase Flows

About the Course:

Multiphase flow reactors are critically important many industries like, chemical, petroleum, petrochemicals, food, pharmaceuticals etc. The performances of these reactors largely depend on the interactions of different phases involved. In this course basic of Multiphase flow along with different flow regime map and pressure drop, and volume fraction calculation will be covered. Further, the interaction between different phases at different scales will be discussed. Modelling methods used for multiphase flow reactors will be covered. Finally, different type of multiphase flow reactors will be introduced and their functioning, advantage and disadvantages and challenges along with future direction of research will be discussed.

Intended Audience: 

Under graduate and post graduate students, professional practitioner in the discipline of Chemical Engineering, Petroleum Engineering, Mechanical Engineering and Energy.



Industries that will recognize this course: 


396 students have enrolled already!!

Instructor Details:

Dr. Rajesh Kumar Upadhyay is serving as Associate Professor in the Department of Chemical Engineering at Indian Institute of Technology Guwahati. He has joined IIT Guwahati as an Assistant Professor in July 2010 after completing his PhD from IIT Delhi. During his PhD, he has worked on development of Radioactive particle tracking technique and implementation of the same on different multiphase flow reactors like gas-liquid, gas-solids and gas-liquid-solids system. He has taught Multiphase Flow in IIT Guwahati as an elective course to UG, PG and PhD students for four consecutive years.

Course Layout

  1. Week - 1 Multiphase flow introduction, Fundamental definitions and terminology used
  2. Week - 2 Flow-pattern map for fluid-fluid (gas-liquid and liquid-liquid) and flow regime map for fluid-solids flows
  3. Week - 3 Pressure drop and Volume fraction calculation for Homogeneous regimes: Using momentum balance equation from equation of motion and empirical correlations
  4. Week - 4 Pressure drop and Volume fraction calculation for Segregated/Separated regimes: Using equation of motion and empirical correlations.
  5. Week - 5 Multiphase Interactions: Drag, lift, virtual mass force, Basset force, one way, two way, three-way and four-way coupling and mathematical formulation of the same.
  6. Week - 6 Modelling Methods for Multiphase Flows: Mixture Model, Euler-Euler Model and Euler-Lagrangian Model
  7. Week - 7 Multiphase Reactors: Bubble Column, Fluidized bed
  8. Week - 8 Multiphase Reactors: Binary Fluidized Bed and Circulating Fluidized bed

Suggested reading:
  1. C.T. Crowe, Multiphase Flow Handbook, CRC Press, 2005.
  2. C. E. Brennen, Fundamentals of multiphase flow, Cambridge University Press, 2005.
  3. N.I. Kolev, Multiphase Flow Dynamics 1: Fundamentals, Springer, 2007.
  4. G. Wallis, One Dimensional Two Phase Flows, Mc-Graw Hill, 1969.

Certification Exams:

  • April 28 (Saturday) and April 29 (Sunday) : Morning session 9am to 12 noon; 
  • Exam for this course will be available in one session on both 28 and 29 April. 
  • 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.