ABOUT    INFO    POSTS    PEOPLE    NEWS    CONTACT    ALBUM   FACILITIES   NEWS   PROJECTS   PUBLICATIONS   RESULTS   WHITEPAPER

 

 4398     5      4      4


ABOUT

The APSYS lab is located at 001 ground floor of Annex Building in the Aerospace Engineering Department, IIT Kharagpur, India. Research on scramjet propulsion, detonation initiation, blast wave generation, pulse jet ignition, vortex combustion, thermoacoustics, spark ignition, jet deflection, etc is being conducted experimentally and computationally. The group performs flow imaging, flow diagnostics, pressure measurements on scaled down test objects. Members have access to a super-computing facility for running computer codes like Fluent, SU2, OpenFoam etc. The Lab has a dedicated compressed air facility, a direct connect modular flow facility capable of running various aerothermodynamic studies. A team of PhD students, MTech students and Undergrad students work on various projects.



NEWS AND ANNOUNCEMENTS

APSYS Labs receives DST funding for SCRAMJET research. The funding will cover equipment procurement for pressure measurements and the purchase of speciality gases used in the tests.

 

General Information

 
post image
 

As part of our work in SCRAMJET combustors, we are studying flame behavior, ignition, stabilization, flashback and mode transition in dual mode SCRAMJET combustors both with cavity assisted and strut assisted flame stabilization mechanisms. As part of our work on Combustion Instability prediction and control, we are also looking at vortex driven resonant combustion in Gas Turbine combustors. Active combustion control using secondary injection targeting q' oscillation tailoring are being attempted.

 
 

PEOPLE 

Instructors, Students, Collaborators, RAs, TAs etc.


Current Members


Past Members


 


POSTS FROM THIS GROUP

Posts about publications, achievement, facilites, books from this group



 

In this recent paper from our group on SCRAM-RAM modes inside a Dual-Mode-Scramjet-Engine (DMSJ), Rajesh Kumar shows that for the Supersonic-at-Strut modes, shockwaves in the combustor respond predictably to an increase or decrease in fuel flow rates. Intermediate and final flow fields bear close resemblance to the steady state flow fields predicted by RANS for those fuel flow rates. Shocks adjust accordingly to match the combustion driven pressure rise. Under the Supersonic-at-Strut mode, when fuel flow rate is increased, the shocks steepen and concentrate near the base of the strut. When fuel flow rate is decreased, the opposite trend is observed wherein shocks become more oblique and spread away downstream from the base of the strut. For the Subsonic-at-Strut modes, shockwaves in the flow field are rather unstable to fuel flow rate modulations. Any change in fuel flow rates causes the isolator shocks to immediately move upstream irrespective of if the fuel flow rate is increased or decreased, suddenly or gradually. Because of this instability of isolator shocks for the Subsonic-at-Strut modes, feedback control of isolator shocks using fuel-flow rate modulations alone may not be feasible.

...

Instability of isolator shocks to fuel flow rate modulations in a strut-stabilised scramjet combustor

 

ALBUM 

2 Images in this album

album image
 

Dr. Koppillil Radhakrishnan visited APSYS lab in January 2023 as a part of a visit to IIT Kharagpur India. Dr. Radhakrishnan is an Indian space scientist who headed the Indian Space Research Organisation between November 2009 and December 2014 as Chairman of Space Commission, Secretary of the Department of Space and Chairman of ISRO.

...

Ex-ISRO Chairman visits APSYS Labs

 

RECENT POSTS

Posts arranged recent first

Flow Diagnostics Tools - Schlieren
Flame flashback in supersonic flowfields
Setup alignment #zero to hero
Ex-ISRO Chairman visits APSYS Labs
SCRAMJET Combustion and High Speed Flows
BTP and MTP Project Topics - 2023 Batch
Flame Dynamics and Its Control
Heat Release Distribution
Thermodynamics and Aerospace Propulsion Systems Class
SCRAMJET Test Rig Instrumentation
Effect of Wall Divergence on the Flow Field Inside a Scramjet Engine
Showcase Our Work to ISRO Chairman S. Somanath and Dr. V. Narayanan
Teacher\'s day celebration 2024 in APSYS Lab
Instability of isolator shocks to fuel flow rate modulations in a strut-stabilised scramjet combustor

CONTACT Advanced Propulsion Systems (APSYS) Lab

Emails through this form are monitored for spam