Global Initiative of Academic Networks (GIAN)

Course on

"Physical Modelling of Multiphase Processes in Mineral and Chemical Processing"

23-28 October,2017

Venue: Virtual Classroom - Core III, IIT Guwahati

Teaching Faculty

Foreign Faculty

Host Faculty

Prof. Geoffrey Evans

Dr. Raghvendra Gupta

Professor,School of Engineering (Chemical Engineering),The University of Newcastle,Australia Assistant Professor, Department of Chemical Engineering
Indian Institute of Technology Guwahati, INDIA
Brief Info Brief Info.

Overview :

Many industrial processes involve interaction between gas, liquid and solid phases; and in today's world of global competitiveness and environmental awareness it's important that those interactions are performed as efficiently and with the least amount of energy and resource consumption as possible. The design and operation of processes that meet these requirements needs a good working knowledge of the underlying phenomena of heat, mass and momentum transfer that govern the behavior of multiphase flows. The size and dispersion of bubbles, droplets and particles is also very important and is closely associated with how and where the energy source is introduced into the system-where too much or too little or at the wrong location can have major detrimental effect in both product quality and operating costs. This course is aimed at providing unique insight into the underlying principles of multiphase processes. It includes both (simple) theory and application to real work examples in the fields of mineral and chemical processing; and at the conclusion will provide the tools and knowledge needed to make informed choices that maximizes beneficial output in terms of energy usage, outputs and resource usage. Course participants will learn these topics through lectures and case studies and assignments will be shared to further enhance the learning experience of participants.


The primary objectives of the course are as follows:
    i) Introducing the basic principles underlying the behavior of multiphase systems commonly found in industrial processes

    ii) Building in confidence and capability amongst the participants in the application of the concepts that underlie the motion, energy usage and stability of multiphase processes as a function of their physical geometry and operating conditions

    iii)Providing exposure to practical problems and their solutions, through problems that reflect real challenges in the workplace

    iv) Enhancing the capability of the participants to apply basic principles of momentum and efficient energy utilization when designing and operating multiphase systems.

Who can attend

i) Practicing chemical/ mechanical engineers designing/working with multiphase flow system

ii) Academicians/researchers working in the area of multiphase flow with application in chemical and process industries

iii) Students (BTech/MSc/MTech/PhD) interested in learning the design of multiphase systems in mineral or process industries

Registration and fees

1. Registration can be made through the following website:

Click here

2. A nominal registration fee of Rs. 500/- (non refundable) is to be paid for the online registration.

3. Course fees:

    a. Students: Rs. 1000 (Refundable subject to joining the course)

    b. Academic Institutions (faculty members): Rs. 5000

    c. Industry / Research Organizations : Rs. 15000

    d. Participants from Abroad : US $500

    The above fee include all instructional materials, computer use for tutorials and assignments, laboratory equipment usage charges, 24 hr free internet facility. The participants will be provided with accommodation on payment basis.

Important Dates

1. Last Date of Registration (Round 1): 15/10/2017

2. Course Dates: 23/10/2017 to 28/10/2017

3. Examination Date: 28/10/2017

The course registration fees is to be deposited to-

Dr. Raghvendra Gupta
Assistant Professor
Department of Chemical Engineering
IIT Guwahati, Pin-781039

In the form of a demand draft in favour of


Payable at "GUWAHATI"

Course Details:

Tentative Lecture Schedule

Day1 (23/10/2017)
Lecture 1: Introduction to multiphase processes, flow characterisation, flow regimes, flow parameters, dryness, volume fraction
Lecture 2: Two phase flow models, homogeneous equilibrium model, volume fraction, pressure drop, two phase flow multipliers, Ergun equation
Tutorial 1: Problem solving session with examples: two phase flow quality, pressure drop, flow regime determination

Day 2 (24/10/2017)
Lecture 3: One dimensional drift flux analysis, cocurrent/countercurrent flow, dispersed phase volume fraction, instability of flows
Lecture 4: Density-driven flows, momentum and energy balances, phase transport, air-lift pumps
Lecture 5: Introduction to approaches to model multiphase flows, Interface capturing techniques- volume of fluid (VOF) and level-set
Tutorial 2: Problem solving session with examples: Drift-flux analysis, gas-liquid flow, solids transport

Day 3 (25/10/2017)
Lecture 6: Introduction to mineral processing, flotation, bubble-particle interaction, product recovery, particle detachment
Lecture 7: Mixing and gas dispersion in mechanically agitated vessels, gas dispersion, power consumption, solids suspension, bubble breakup
Lecture 8: Euler-Euler and Euler-Lagrangian techniques to model multiphase flows
Tutorial 3: Problem solving session with examples: design of mineral flotation cells for a given feed type and desired recovery

Day 4 (26/10/2017)
Lecture 9: Bubble columns, energy dissipation, gas injection, gas volume fraction, bubble breakup, homogeneous and heterogeneous regimes
Lecture 10: Fluidised beds volume fraction of dispersed and continuous phases, pressure drop, minimium fluidization velocity, energy dissipation
Lecture 11: Case Studies: CFD modelling of multiphase flows in mineral and process industries
Tutorial 4: Problem solving session with examples: Design of bubble columns and fluidised beds with indutrial application, e.g. mineral flotation

Day 5 (27/10/2017)
Lecture 12: Aeration principles applied to wastewater treatement, mass transfer, bubble dynamics, oxygen transfer efficiency
Lecture 13: Aeration requirements for biological systems, energy analysis, pressure drop, network of pipes analysis
Tutorial 5: Problem solving session with examples: Design of simple aeration system for industrial wastewater treatment plant


Accomodation based on nominal charges (per day) will be avilable to all participants at IIT Guwahati campus. Student participants will be accomodated in boys / girls hostels. Participants from academic, R & D institutes and industry will be accomodated in IITG guest house on twin sharing basis. Partipants need to borne their own accomodation and fooding expenses. At hostels all arrangments such as bed, mattress, toileteries will be made available. For more information please contact the course coordinator.

How to Reach IIT Guwahati

Campus Map of IIT Guwahati

Brief Information about the Faculties

Prof. Geoffrey Evans

Prof. Geoffrey Evans is a Professor in the Department of Chemical Engineering at The University of Newcastle, NSW, Australia. His principal area of expertise lies in the fields of particle technology, multiphase processes, mass transfer and interfacial phenomena. He has been actively involved in fundamental and applied research into multiphase systems over the last 30 years.

Dr. Raghvendra Gupta

Dr. Raghvendra Gupta is an Assistant Professor in the Department of Chemical Engineering, Indian Institute of Technology, Guwahati. His research interests are in the area of multiphase flows, microfluidics and biofluid mechanics.

Course coordinator

Dr. Raghvendra Gupta.
Assistant Professor
Department of Chemical Engineering
IIT Guwahati, Pin-781039


Dr. Raghvendra Gupta.
Assistant Professor
Department of Chemical Engineering IITG,
Phone number: +91 0361-258 5530 (O)
Mobile number: +91 88110 93202