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Ph.D. (Engg) : Multi-Agent Coordination using Convex Formations and Binary Tree Structures

STC Seminar Hall, Dept. of Aerospace Engineering

Multi-agent systems are increasingly deployed in missions involving large-scale tasks with complex objectives that are beyond the capability of a single agent. Such missions demand computationally efficient coordination strategies that ensure safety, reliable operation, and ease of implementation, particularly in dynamic and uncertain environments. This thesis investigates coordination strategies in multi-agent systems, specifically addressing the […]

Ph.D. (Engg) :Experimental Investigation of Autoignition Pathways and Shock-Train Dynamics During Mode Transition in a Dual-Mode Supersonic Cavity Combustor

STC Seminar Hall, Dept. of Aerospace Engineering

Hypersonic propulsion systems capable of sustained atmospheric flight are critical enablers for future reusable launch vehicles, long-range high-speed transport, and responsive global strike platforms. Among the various air-breathing concepts, scramjet engines offer unmatched efficiency at hypersonic speeds by utilizing atmospheric oxygen and avoiding the mass penalties associated with onboard oxidizers. However, the practical realization of […]

M.Tech(Res) : Effect of hydrogen-enrichment on soot formation in laminar gaseous hydrocarbon flames

STC Seminar Hall, Dept. of Aerospace Engineering

Gaseous and particulate pollutants pose a significant threat to human health and the environment, prompting regulatory action to address major sources of emissions. Soot is a key particulate pollutant. Recently, emission standards for commercial aeroengines have been revised, necessitating the mitigation of soot emissions. Investigating the soot formation process is a key step towards reducing […]

Ph.D. (Engg) : Distributed Artificial Intelligence Technology for Robotic Swarms: An Interpretable Online Learning Perspective

STC Seminar Hall, Dept. of Aerospace Engineering
Virtual Event Virtual Event

Robotic swarms offer immense potential for critical operations such as search and rescue, surveillance, and environmental monitoring, owing to their distributed nature and redundancy. However, the operational reliability of swarms heavily depends on a continuous, closed-loop process: extracting high-fidelity or accurate collective situational awareness from distributed observation, and subsequently utilizing that awareness for cooperative decision […]

MTech(Res): Characterization of Turbulent Spots near the onset of Transition in a Flat-plate Boundary Layer

Boundary layer (BL) transition to turbulence occurs through the inception, growth, and merging of turbulent spots. Understanding these spots is vital for predicting aerodynamic performance in disturbance-dominated environments like gas turbines. However, conventional spot identification has been limited by subjective, manual thresholding. The first phase of this work introduces a novel, threshold-free demarcation scheme combining […]

Modelling the response of Turbulent CH4-Air premixed flame using Resolvent Analysis

STC Seminar Hall, Dept. of Aerospace Engineering

An understanding of the flame transfer function (FTF) is essential for predicting the onset of combustion instabilities in gas turbine combustors, where flow oscillations excited by acoustic forcing drive burning area and heat-release oscillations that can couple unfavourably with combustor acoustic modes. The heatrelease response is expensive to characterize directly through time resolved simulation, motivating […]

Ph.D. (Engg) : Wave Propagation in Small Scale Structure Modelled With Nonlocal Continuum Theory

This thesis develops analytical and computational frameworks for studying static and dynamic behaviour in nonlocal elastic structures, focusing on wave propagation, stress localization, and guided-wave phenomena at micro- and nano-scales, where size-dependent effects fall outside classical continuum mechanics. Eringen's differential nonlocal elasticity theory and higher-order continuum formulations are used to capture these small-scale interactions. The […]

MTech(Res) : Design of an Ex-Situ Gas Sampling Layout with Various Probes and Their Performance Assessment for Accurate Emission Measurements

STC Conference Hall, Ground Floor, Department of Aerospace Engineering

Chemical kinetic mechanism development and validation require quantitative species data from canonical flames. Burner-stabilized pre -mixed flames provide a stationary post-flame region directly comparable to one-dimensional kinetic simulations. Ex-situ gas sampling delivers absolute CO and NO mole fractions from this region. The extraction step introduces two coupled biases. Reactions can continue inside the probe, and […]

Ph .D.(Engg.): Explicit Filtering LES of turbulent swirling flows and multi-regime hydrogen flames

STC Seminar Hall, Dept. of Aerospace Engineering

The need to decarbonize power generation and aviation has established hydrogen as a promising fuel for next generation gas turbine combustion systems. However, its high chemical reactivity significantly increases the propensity for autoignition and flashback under lean premixed conditions commonly used in hydrocarbon combustion systems. New combustor concepts based on direct fuel injection address these […]

Ph.D. (Engg): Aerodynamics and Stability of a Generic Tailless UAV in Ground Effect

AE Conference Room , AE 003
Virtual Event Virtual Event

Tailless UAVs are stealthy, high-subsonic configurations used for deep penetration into contested airspace. These configurations have wing with moderate leading edge sweep angle with no definite fuselage and lack both horizontal tail and vertical tail which makes the aerodynamics of these configurations very unique. The increase in autonomous UAVs in recent times have led to […]

Ph.D. (Engg):Tonal acoustic radiation from turbulent subsonic jets

STC Seminar Hall, Dept. of Aerospace Engineering

Acoustic tones in the near field of a Mach 0.9, Reynolds number 10^6 round jet are investigated using large-eddy simulations (LES) performed with the explicit filtering LES (EFLES) approach. The jet is issued into the ambient through a cylindrical nozzle. Pressure spectra at observer locations in the upstream direction reveal the presence of tones which […]

MTech(res) Parallel Particle Tracking for Turbulent Round Jets

STC Seminar Hall, Dept. of Aerospace Engineering

Particle tracking in turbulent jets is essential for an accurate Lagrangian understanding of jet flows. While parallel algorithms and numerical schemes to compute flow fields can be scaled to a large number of computing processes, the same is not necessarily true for particle tracking. This thesis presents an analysis of the parallel efficiency of particle […]

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