CENTRE OF PROPULSION TECHNOLOGIES @ IIT Madras

Small Turbofan Engine (STFE)
S.no Project title Name of PI and Lab Coordinating Scientist
Objectives
1 Unsteady flow physics and loss mechanisms in small engine axial compressors

SP Das, M Govardhan& BVSSS Prasad/ IITM

BaljeetKaur, Reza Abbas/ GTRE

1. To simulate the flow in axial flow compressor of Manik I configuration to understand the unsteady flow physics and to predict the losses.

2. To find the optimum axial spacing for better performance of axial flow compressor.

2 Loss reduction in annular S-shaped ducts

SP Das, M Govardhan& BVSSS Prasad/ IITM

N Vidhyashankar, Reza Abbas/ GTRE

1. To study flow physics in annular S-shaped duct.

2. To adopt flow control mechanism to obtain uniform flow at the exit of the duct and evaluate the performance of the duct.

3 Performance improvement of high pressure compressor stage by optimizing vane diffuser geometries

M Govardhan, SP Das& BVSSS Prasad/ IITM

Kishore Kumar, J / GTRE

Sankarkumar/ GTRE

Performance improvement of high pressure compressor stage by optimizing vane diffuser geometries

4 Effect of pinch, variable width and rotation of vaneless diffusers on the performance of centrifugal compressors

M Govardhan, SP Das &BVSSS Prasad/ IITM

Kishore Kumar, J / GTRE

Sankarkumar/ GTRE

Effect of pinch, variable width and rotation of vaneless diffusers on the performance of centrifugal compressors

5 Unsteady flow physics and loss mechanisms and shock boundary layer Interactions in turbine flow field

BVSSS Prasad, SP Das & M Govardhan/ IITM

RD Bharathan,SharadKapil/ GTRE

1. To simulate the flow in gas turbine of a small engine of Manik I configuration to understand the unsteady flow physics and to predict the losses.

2. To breakdown the total loss into individual loss components and fit into the existing loss correlations with correction factors.

3. To evaluate the performance of turbine in terms of efficiency.

4. To study shock boundary layer interactions and its effect on losses.

6 An automated optimization framework for turbomachinery design

AbdusSamad, M Govardhan& BVSSS Prasad& SP Das/ IITM

David John, SharadKapil/ GTRE

The aim is to develop an optimization framework for turbomachinery system

7 Tip gap mechanism in turbines

M Govardhan,BVSSS Prasad& SP Das/ IITM

David John, SharadKapil/ GTRE

1. To provide detailed information on end wall flow, effect of tip clearance gaps, effect of tip clearance vortex on the downstream components

2. To study the effect of squealer rims (single and double sided), winglets on tip clearance flow

8 Secondary air interaction with main flow in axial flow turbines

BVSSS Prasad& SP Das/ IITM

David John, SharadKapil/ GTRE

• To simulate interaction of flow between main stream and secondary air system

1.To create different geometric and flow conditions at the interface between the main and secondary flows.

2. To determine the leakage/purge flow characteristics of the simulated geometries.

3. To arrive at a design correlation for the cascade loss coefficient including the effects of leakage/purge flow in terms of different flow and geometric variables.

4. To compare the above experimental correlations by computational simulations.

5. Extend the computational investigations to include three dimensional and rotational effects.

9 Development of nanoboron slurry fuel, its characterization, and atomization with a coaxial airblast atomizer

SR Chakravarthy, TM Muruganandam,SrikrishnaSahu&RVinu/ IITM

Sonal Lucy, Dalton Maurya/ GTRE

1. Preparation of nano-sized boron using combustion technique and its slurry with JP-10 fuel.

2. Detailed characterization of boron-nanoparticles and the slurries.

3. Atomization and combustion of boron-slurry fuel with co-axial airblast combustor.

4. Droplet combustion studies (both single droplet and stream of droplets) for boron-slurry fuel.

10 Experimental investigation of liquid atomization in slinger combustor for small gas turbine engines

SrikrishnaSahu, TM Muruganandam& SR Chakravarthy/ IITM

K Srinivasan, Dalton Maurya/ GTRE

Investigation of atomization characteristics of slinger combustor for small gas turbine engines

11 Combustor technology development for small gas turbine / turbofan engine

SA Channiwala/ SVNIT Surat, D Kulushreshtha/ Pithawala College, Surat

Pankaj Kumar, T Velayuthum/ GTRE

The aim of this project is design, analysis, optimization and development of gas turbine combustion chambers of small capacity gas turbine/turbofan engine

12 Detailed diagnostics in the single cup sector of a modern annular combustor: global parameters from local interactions

M Panchagnula, S Seshadri, VD Narasimhamurthy& S Sahu/ IITM

K Srinivasan/ GTRE

To probe into the various global parameters in a real scale gas turbine combustor and predict their evolution as a function of the corresponding local event interactions.

13 Airblast injector development for next gen engine

BVSSS Prasad& SP Das/ IITM

David John, SharadKapil/ GTRE

1. To develop qualification standards for future and current airblast injectors as well as for the fuel manifold.

2. To develop the technology as well as the design methodology for a microspray based airblast atomizer for the next generation GT engine.

14 Experimental and numerical studies on improvised combustor liner cooling methodology

A Pattamatta& C Balaji/ IITM

K Srinivasan/ GTRE

Experimental and numerical studies on improvised combustor liner cooling methodology

15 Development and Optimization of SwirlVenturi Lean Direct Injection Gas Turbine Combustor

SR Chakravarthy, TM Muruganandam)&S Sahu/ IIT M

Pankaj Kumar/ GTRE

1.To develop optimized swirl venturi based lean direct injection combustor

2. To verify the combustion instability characteristics of the developed combustor

3. To adopt laser diagnostics and simulations for optimization/characterization of the combustor

16 Design, Development and Testing of High Shear Atomizer in Gas Turbine Combustors

S Basu, RV Ravikrishna, D Sivakumar & S Chaudhuri/ IISc

Mukund Kumar Pandey/ GTRE

1. Design, fabrication, optimization and understanding the basic mechanisms and performance of novel high shear injectors in gas turbine combustors applied to aero propulsion

2. To quantify and analyze the fuel atomization mechanisms, dispersion, mixing quality, drop size, velocity field, patternation in highly turbulent swirling flow field

3. Sensitivity analysis and regime map generation correlating spray characteristics and dynamics with operating conditions and injector design variables

17 Modeling and analysis of mistuned rotor blade systems

S Faruque Ali, Sayan Gupta & A Arockiarajan/ IIT M

Reshma Khan, V Pandurangi/ GTRE

The aim is to provide a simple analytical formula for assessing the effect of mistuning of rotor blades and blisks

18 Dynamic analysis of tip-shrouded turbine blades

Abhijit Sarkar & A SeshadriSekar/ IITM

Dilip Kumar, Reshma Khan/ GTRE

Devloping and validating an analytical approach for dynamic modeling of turbine blades

19 Stress-rupture property evaluation of advanced super alloys for Small Turbo Fan Engine (STFE) technologies

Ravi Sankar Kottada/IITM

Chandru Fernando, Rashmi Rao, Anuradha Nayak/ GTRE

High temperature stress-rupture studies of advanced super alloys, LM plots for life prediction, and to understand their high temperature deformation mechanisms.

20 High temperature erosion and corrosion of combustor components due to combustion of metallized slurry fuels

SR Chakravarthy, SrinivasaRaoBakshi& M Kamaraj/ IITM

Tamil Selvi, K Srinivasan, Dalton Maurya/ GTRE

Study of the degradation of TBC coated superalloy coupons subjected to the combustion products of JP10 and JP10-Boron slurry fuels

21 High temperature erosion damage characterization of downstream components by particle erosion testing

SrinivasaRaoBakshi, M Kamaraj& SR Chakravarthy/ IITM

SK Balan, Tamil Selvi/ GTRE

Study of the degradation of superalloy subjected to high temperature particle erosion testing at temperatures up to 1200 °C

22 Characterization of selective laser melted Inconel 718 and Ti-6Al4V

GD Janaki Ram, Ravi SankarKottada, V SubramanyaSarma& S Ganesh SundaraRaman/ IITM

BK.Nagesha, Jivankumar, RashmiRao, Anbazhagan/ GTRE

The proposed work aims to critically assess the potential of selective laser melting technology for producing end-use gas turbine engine parts in Inconel 718 and Ti-6Al-4V.