STC Seminar Hall, Dept. of Aerospace Engineering

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Ph.D. (Engg) :Studies on the Mixing Layer Between Supersonic Supersonic Co-flows

STC Seminar Hall, Dept. of Aerospace Engineering

Two supersonic streams merging together in a co-flow configuration are encountered in several engineering systems, such as high-speed propulsion devices and supersonic ejectors. The thin mixing layer that develops between the two streams is dominated by compressibility effects and is prone to shock interactions in shock-dominated flows. The convective Mach number is defined relative to […]

Ph.D. (Engg) : Enhancing Precise Label Prediction and Imbalance Robustness in Multi-Label Learning

STC Seminar Hall, Dept. of Aerospace Engineering

Multi-label learning (MLL) addresses learning problems in which a single data instance may simultaneously belong to multiple semantic categories. This formulation arises naturally in many real-world applications, including image and video understanding, medical diagnosis, text categorization, and bioinformatics. In many of these settings, it is not sufficient to merely rank relevant labels higher than irrelevant […]

Ph.D. (Engg) : Characterization of time-frequency behavior of flow intermittency in transitional boundary layers

STC Seminar Hall, Dept. of Aerospace Engineering

The importance of transitional flow studies can be realized from the fact that it acts as a bridge between the laminar and turbulent flows. The present work deals with the investigation of time-frequency characteristics of transitional flows and their modelling, which is presented in three parts. First, we propose a wavelet-transform based smooth detector function […]

Ph.D. (Engg) : Investigations on Elastic Deformation of Ferromagnetic Rods and Ribbons

STC Seminar Hall, Dept. of Aerospace Engineering

Bulk ferromagnetic materials exhibit Joule magnetostriction with characteristic strain magnitudes on the order of (10^{-6}) to (10^{-4}), which is often insufficient for the displacement requirements of modern soft robotic and adaptive structural systems. Ferromagnetic elastic slender structures provide a promising alternative, offering the potential for large actuation displacements under small external magnetic fields. This enhanced […]

Flow-Aware Simulation Technique (FAST) for AI-Enabled, Physics-Integrated Turbulence Computations

STC Seminar Hall, Dept. of Aerospace Engineering

Data-driven approaches have generated tremendous excitement in turbulence modeling, but enthusiasm has often outpaced scientific rigor. Many current AI/ML turbulence models lack physical interpretability, exhibit limited generalizability across flow regimes, and do not reflect the true dynamical nature of turbulence. A new strategy is needed—one that leverages AI while remaining fully compliant with the physics […]

Ph.D. (Engg) : Autorotation of Single-Winged Spinning Samaras

STC Seminar Hall, Dept. of Aerospace Engineering

Nature has consistently served as a powerful source of innovation, offering elegant and sustainable solutions to complex engineering problems. Among these, the spinning samara seed stands out as a biologically efficient system for passive aerial transport. Samaras, such as those from mahogany and Buddha coconut trees, exhibit stable autorotative descent, making them strong candidates for […]

Taming Waves through Non-Hermiticity: From Invisible Tunneling to Unidirectional Nonlinear Pulses

STC Seminar Hall, Dept. of Aerospace Engineering

Non-Hermitian wave dynamics challenge our conventional understanding of wave propagation, revealing transport behaviors inaccessible in Hermitian systems. In this seminar, I will present a few intriguing phenomena arising from these dynamics. In the first part, I will show a counterintuitive tunneling effect at the interface of a non-Hermitian system sandwiched between two Hermitian ones. Here, […]

Ph.D. (Engg): Development of Approaches for Optimal Shared Utilization of Spatially Distributed Resources Under Sparse Connectivity in Energy Internet

STC Seminar Hall, Dept. of Aerospace Engineering
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The global shift towards sustainable power generation has led to a significant rise in distributed energy resources (DERs), particularly from renewable sources. These localized generation systems, when combined with energy storage, form microgrids—self-contained units capable of managing generation and consumption. While energy storage enables time-shifted usage of intermittent renewable power, limitations in storage capacity and […]

Ph.D. (Engg): ON HIGH-SPEED CURVED COMPRESSION RAMP AIR INTAKES

STC Seminar Hall, Dept. of Aerospace Engineering

A scramjet, i.e., a supersonic combustion ramjet, is an air-breathing engine that enables sustained atmospheric flight in the hypersonic regime. It consists broadly of four key components: the air intake, isolator, combustor, and nozzle. The air intake and the isolator collectively comprise the compression system, which captures and conditions the freestream flow to suit the […]

Investigation of flow instabilities in high-speed impinging jets using dual-time velocity measurements

STC Seminar Hall, Dept. of Aerospace Engineering

Motivated by applications in the aerospace propulsion industry as well as other energy systems, the fundamental study of phase-locked shear-layer instabilities in high-speed impinging jets, has been of research interest for a long time. The study of instabilities is usually conducted with time derivatives of velocity field. However, time-resolved experimental data acquisition using particle image […]

Space Domain Awareness in the Artemis Era

STC Seminar Hall, Dept. of Aerospace Engineering

Since the Apollo era, space has become an increasingly valuable domain for national security due to diplomatic, informational, and economic reasons. The last few years have seen exponential growth in the launch of space objects and there is an increased interest in having a permanent cislunar presence through the Artemis program. The understanding of motion […]

Miniaturised technologies for potential applications in space research

STC Seminar Hall, Dept. of Aerospace Engineering

Miniaturised technologies, due to their portability, rapid responses, low powers and ability of multi-component integration, have received an ever-growing interest in areas like healthcare, air quality, and space research. This talk will provide an overview of my research in 3 domains of miniaturised technologies: a) microfluidics, b) MEMS sensors and c) nanoaerosol instruments. I will […]

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