Aerodynamic Design of Axial Flow Compressors & Fans

By Prof. Chetankumar Sureshbhai Mistry   |   IIT Kharagpur
Learners enrolled: 1254
This course builds upon basics of Thermodynamics, Aircraft Propulsion and Gas Dynamics that students have learnt in previous pre-requisite courses and aims to give the students a fundamental understanding of how axial flow compressor and industrial fans work and how they are designed as per specific requirements for land based power plants, aircraft jet engines, special applications in process industries as well as future electric propulsion systems. The aerodynamics and fluid flow aspects of axial flow compressors and fans are covered with considerations of recent advancements in design processes.
INTENDED AUDIENCE: UG,PG, PhD scholars, Industry working professionals

PREREQUISITES: BE, Having background of Thermodynamics, Gas Dynamics, Gas Turbines, aircraft Propulsion etc.

INDUSTRY SUPPORT: Indian Air Force, Indian Navy, Indian Army, DRDO, ISRO, NAL,HAL,GTRE and companies such as GE, P&W, R&R, Siemens, MHI etc.
Course Status : Ongoing
Course Type : Elective
Duration : 12 weeks
Start Date : 25 Jul 2022
End Date : 14 Oct 2022
Exam Date : 29 Oct 2022 IST
Enrollment Ends : 08 Aug 2022
Category :
  • Aerospace Engineering
Credit Points : 3
Level : Postgraduate

Page Visits

Course layout

Week 1: Introduction to axial flow compressor and fans, applications for aircraft engines, land based power plants, industrial applications, Construction of axial flow compressor, Euler’s equation and velocity triangles for axial flow compressor. Concept of diffuser in the view of compressor passage design, understanding of compression process using T-S diagram, Adiabatic efficiency and Polytropic efficiency (Tutorial)
Week 2: Understanding of aerodynamic and thermodynamic work for compression process, axial, radial and tangential momentum , Various fan and compressor possible configurations like Only rotor, Inlet guide vanes (IGV) +rotor, IGV + rotor +stator, Contra rotating stage configurations and their application based on specific requirement, 2D aerodynamics of stage, Introduction to Diffusion factor, Degree of reaction, Dehaller’s factor (Tutorial)
Week 3: 3D flow through axial flow compressor, Work done factor, Radial Equilibrium Theory and it’s applications, Introduction to various design approaches like Free Vortex, Force Vortex, Constant Reaction, Exponential method, Constant alpha and Fundamental based design approaches for compressor and fan design. (Tutorial)
Week 4: Flow track design and understanding with different requirements, Axial flow compressor cascade and Introduction to various angles like Air angle, Flow angle, Incidence angle, Deviation angle, Camber angle, Stagger angle etc. and their importance in design, Introduction to various cascade tunnels
Week 5: Selection of camber line, Selection of various angle for design consideration and their effects on performance of axial flow machines, Concept of Critical Velocity Ratio. (Tutorial)
Week 6: Criteria for selection of various design parameters, Guidelines for selection initial parameters as first cut calculation, Systematic approach for design of axial flow compressor design based of various approaches.


Week 7: Design of low speed axial flow compressor based of various design considerations, Adoption of airfoil geometry for finalizing the rotor and stator blades. (Tutorial)
Week 8: Design of low speed contra rotating axial flow compressor based of various design considerations, Adoption of airfoil geometry for finalizing the rotor blades. (Tutorial)
Week 9: Need for transonic compressor stages, Type of Transonic Airfoils and their special applications, Selection of various blade parameters.
Week 10: Design of Transonic axial flow compressor based of various design considerations. (Tutorial)
Week 11: Need for future axial flow compressors for specific applications and special need. Design of industrial fans based of various design considerations. (Tutorial)
Week 12: Use of CFD for axial flow compressor and fan analysis and understanding of modifications in design, Mesh selection criteria, Boundary conditions, Selection criteria for turbulence models, Selection of various flow domain interface, Post processing approaches, Case studies with various aspects, Issues and Challenges for CFD application to axial flow compressor, Next generation CFD demands

Books and references

  1. Saravanamuttoo, H.I.H., Rogers G.F.C., Cohen H. “Gas Turbine Theory”, 6th Edition, Pearson, 2010.

  2. Dixon, S.L., “Fluid Mechanics and Thermodynamics of Turbomachinery”, 7th Edition, Elsevier Publications, 2013.

  3. Cumpsty,N.A., “Compressor Aerodynamics”, Longman,1989

  4. Mckenzie, A.B., “Axial Flow Fans and Compressors: Aerodynamic Design and Performance”, Ashgate Publishing Limited, 1997.

  5. Wallis, R.A., “Axial Flow Fans and Ducts”, Wiley-Inter science, 1983.

  6. B, Lakshminarayana, “Fluid Mechanics and Heat Transfer in turbomachinery”, John Wiley & Sons,1995.

  7. J H Horlock, “Axial flow compressors”, Butterworth publications Ltd., 1958.

  8. “Aerodynamic design of axial flow compressors”, NASA SP-36, 1965.

  9. Wilson, David Gordon and Korakianitis, Theodosios, “The design of high-efficiency turbomachinery and gas turbines”. MIT press,2014.

  10. Ronald H. Aungier,“Axial-Flow Compressors: A Strategy for Aerodynamic Design and   Analysis”, ASME, 2003.

  11. Research papers from renowned journals.

Instructor bio

Prof. Chetankumar Sureshbhai Mistry

IIT Kharagpur
Prof. Chetankumar Sureshbhai Mistry is an Assistant Professor in the Department of Aerospace Engineering, IITKharagpur.He has 19years’ experience in teaching and research. He has done his graduation in Mechanical Engineering from REC, Surat (Presently NIT-Surat). He received his Master’s of Engineering in Turbo Machinery from NIT, Surat; Ph.D. from IIT Bombay. His Ph.D. thesis on “Experimental Investigation on the Performance of a Contra Rotating Fan Stage under Clean and Distorted Inflow Conditions” awarded with “Award for Excellence in Thesis Work”, IIT Bombay in 2014. He is also a recipient of “ASME- IGTI Young Engineer Travel Award” in 2013. His area of research are: design and performance augmentation strategies for turbomachines, experimental and CFD study of turbomachines, contra rotating axial flow turbomachines aerodynamics, electric propulsion as well as fluid mechanics & heat transfer, and experimental aerodynamics.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 29 October 2022 Morning session 9am to 12 noon; 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. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Kharagpur. It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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