516 citations · 613 across the 19 of their papers we have counts for
22 papers
A Scalable Sharp-Interface Immersed Boundary Method for Moving Boundary Flow Simulation on Multi-GPU Systems
Sushrut Kumar, Joshua Romero, Massimiliano Fatica +2
Sharp-interface immersed boundary methods provide a versatile framework for simulating flows with complex moving boundaries, but their irregular data structures, dynamic sparsity,…
GPU-Accelerated Simulations of Moving Boundary Problems and Fluid-Structure Interaction at Extreme Scales
Sushrut Kumar, Joshua Romero, Jung-Hee Seo +2
Computational fluid dynamics and fluid-structure interaction simulations involving moving and deforming bodies is extremely hard. In this work, we present a graphical processing un…
Energy Transfer Mechanisms in Wake-Modulated Transonic Flutter
Vedasri Godavarthi, Jacob Turner, Jung-Hee Seo +1
Transonic flutter is a detrimental aeroelastic instability that can generate large-amplitude structural oscillations, leading to severe vibration, fatigue damage, reduced operation…
Hydrodynamics of Flapping Foils Undergoing Irregular Motion with Application to Wave-Assisted Propulsion
Harshal S. Raut, Jung-Hee Seo, Rajat Mittal
Flapping foils are widely studied as bioinspired propulsors, yet most investigations have focused on regular, sinusoidal kinematics. In realistic environments, however, irregular m…
Non-invasive Assessment of Pancreatic Duct Hypertension Using Computational Flow Modeling
Haobo Zhao, Jung-Hee Seo, Venkata Akshintala +2
Chronic pancreatitis (CP) is a progressive inflammatory disease frequently associated with severe, treatment-resistant abdominal pain, which is hypothesized to result from pancreat…
From vortices to forces - a data-driven framework for unsteady lift generation in three-dimensional vortex-dominated flows
Suryansh Prakhar, Jung-Hee Seo, Rajat Mittal
Time-varying flow-induced forces on bodies immersed in fluid flows play a key role across a range of natural and engineered systems, from biological locomotion to propulsion and en…
Scaling Laws for Caudal Fin Swimmers Incorporating Hydrodynamics, Kinematics, Morphology, and Scale Effects
Jung Hee Seo, Ji Zhou, Rajat Mittal
Many species of fish, as well as biorobotic underwater vehicles, employ body caudal fin propulsion, in which a wave-like body motion culminates in high-amplitude caudal fin oscilla…
Aerodynamics and Aeroacoustics of da Vinci's Aerial Screw
Suryansh Prakhar, Jung-Hee Seo, Rajat Mittal
Leonardo da Vinci's aerial screw, conceived in the 15th century, represents one of the earliest conceptualizations of lift-generating rotary flight. Despite its historical signific…
A GPU-Accelerated Sharp Interface Immersed Boundary Solver for Large Scale Flow Simulations
Sushrut Kumar, Joshua Romero, Jung-Hee Seo +2
Immersed boundary methods (IBMs) facilitate the simulation of flows around stationary, moving, and deforming bodies on Cartesian grids. However, extending these simulations to the…
Harnessing Leading-Edge Vortices for Improved Thrust Performance of Wave-Induced Flapping Foil Propulsors
Harshal S. Raut, Jung-Hee Seo, Rajat Mittal
This study employs high-fidelity fluid-structure interaction simulations to investigate design optimizations for wave-assisted propulsion (WAP) systems using flapping foils. Buildi…
Modal Force Partitioning -- A Method for Determining the Aerodynamic Loads for Decomposed Flow Modes with Application to Aeroacoustic Noise
Suryansh Prakhar, Jung-Hee Seo, Rajat Mittal
Aerodynamic loads play a central role in many fluid dynamics applications, and we present a method for identifying the structures (or modes) in a flow that make dominant contributi…
Flow-induced dorso-ventral deformation enhances propulsive efficiency in flexible caudal fins
Sushrut Kumar, Matthew J. McHenry, Jung-Hee Seo +1
Fish swim with flexible fins that stand in stark contrast to the rigid propulsors of engineered vehicles. Using numerical simulations of the dynamics of flow-structure interaction,…
Hydrodynamically Beneficial School Configurations in Carangiform Swimmers: Insights from a Flow-Physics Informed Model
Ji Zhou, Jung-Hee Seo, Rajat Mittal
Researchers have long debated which spatial arrangements and swimming synchronizations are beneficial for the hydrodynamic performance of fish in schools. In our previous work (Seo…
Computational Modeling and Analysis of the Coupled Aero Structural Dynamics in Bat Inspired Wings
Sushrut Kumar, Jung-Hee Seo, Rajat Mittal
We employ a novel computational modeling framework to perform high-fidelity direct numerical simulations of aero-structural interactions in bat-inspired membrane wings. The wing of…
Bioinspired Drone Rotors for Reduced Aeroacoustic Noise and Improved Efficiency
Suryansh Prakhar, Jung-Hee Seo, Rajat Mittal
The application of unmanned aerial vehicles (UAVs) is surging across several industries, paralleled by growing demand for these UAVs. However, the noise emitted by UAVs remains a s…
Modeling the Effect of Sleeve Gastrectomy on Gastric Digestion in the Stomach: Insights from Multiphase Flow Modeling
Weixuan Li, Sharun Kuhar, Jung-Hee Seo +1
The geometry and motility of the stomach play a critical role in the digestion of ingested liquid meals. Sleeve gastrectomy, a common type of bariatric surgery used to reduce the s…
Modeling the effect of hydrodynamic wakes in dynamical models of large-scale fish schools
Ji Zhou, Jung-Hee Seo, Rajat Mittal
A novel model of the wake of swimming fish is developed and incorporated into a dynamical model of a fish school to explore the effect of hydrodynamics on the emergent behavior in…
3D audio-visual recordings of mosquito wings for aeroacoustic simulation
Lionel Feugère, Jung-Hee Seo, Umair Ismail +2
Mosquito acoustic communication is studied for its singular and poorly-known in-flight hearing mechanism, for its efficiency in mechanical-to-acoustical power transduction, as well…
Effect of Antral Motility on Food Hydrolysis and Gastric Emptying from the Stomach: Insights from Computational Models
Sharun Kuhar, Jae Ho Lee, Jung-Hee Seo +2
The peristaltic motion of the stomach walls combines with the secretion of enzymes to initiate the process that breaks down food. Computational modelling of this phenomenon can hel…
Computational model of drug dissolution in the stomach: effects of posture and gastroparesis on drug bioavailability
Jae H. Lee, Sharun Kuhar, Jung-Hee Seo +2
The oral route is the most common choice for drug administration because of convenience, low cost, and high patient compliance, but is also a complex route. The rate of dissolution…
The Flow Physics of COVID-19
Rajat Mittal, Rui Ni, Jung-Hee Seo
Flow physics plays a key role in nearly every facet of the COVID-19 pandemic. This includes the generation and aerosolization of virus-laden respiratory droplets from a host, its a…
A Fluid-Structure Interaction Solver for Compressible Flows with Applications in Blast Loading on Thin Elastic Structures
Shantanu Bailoor, Aditya Annangi, Jung Hee Seo +1
We report development and application of a fluid-structure interaction (FSI) solver for compressible flows with large-scale flow-induced deformation of the structure. The FSI solve…