67 citations · 342 across the 19 of their papers we have counts for
19 papers
Immersed-Boundary Fluid-Structure Interaction of Membranes and Shells
Marin Lauber, Gabriel D. Weymouth, Georges Limbert
This paper presents a general and robust method for the fluid-structure interaction of membranes and shells undergoing large displacement and large added-mass effects by coupling a…
WaterLily.jl: A differentiable fluid simulator in Julia with fast heterogeneous execution
Gabriel D. Weymouth, Bernat Font
Integrating computational fluid dynamics (CFD) software into optimization and machine-learning frameworks is hampered by the rigidity of classic computational languages and the slo…
Effects of surface roughness on the propulsive performance of pitching foils
Rodrigo Vilumbrales-Garcia, Melike Kurt, Gabriel D. Weymouth +1
The hydrodynamic influence of surface texture on static surfaces ranges from large drag penalties (roughness) to potential performance benefits (shark-like skin). Although, it is o…
Energy-efficient tunable-stiffness soft robots using second moment of area actuation
Leo Micklem, Gabriel D. Weymouth, Blair Thornton
The optimal stiffness for soft swimming robots depends on swimming speed, which means no single stiffness can maximise efficiency in all swimming conditions. Tunable stiffness woul…
A systematic investigation into the effect of roughness on self-propelled swimming plates
Jonathan Massey, Bharathram Ganapathisubramani, Gabriel Weymouth
This study examines the effects of surface topography on the flow and performance of a Self-Propelled Swimming (SPS) body. We consider a thin flat plate with an egg-carton roughnes…
Effect of aspect ratio on the propulsive performance of tandem flapping foils
N. S. Lagopoulos, G. D. Weymouth, B. Ganapathisubramani
In this work, we describe the impact of aspect ratio (AR) on the performance of optimally phased, identical flapping flippers in a tandem configuration. Three-dimensional simulatio…
Immersed Boundary Simulations of Flows Driven by Moving Thin Membranes
Marin Lauber, Gabriel D. Weymouth, Georges Limbert
Immersed boundary methods are extensively used for simulations of dynamic solid objects interacting with fluids due to their computational efficiency and modelling flexibility comp…
Data-Driven Multi-Grid Solver for Accelerated Pressure Projection
Gabriel D Weymouth
Pressure projection is the single most computationally expensive step in an unsteady incompressible fluid simulation. This work demonstrates the ability of data-driven methods to a…
Effects of Aspect Ratio on Rolling and Twisting Foils
A. N. Zurman-Nasution, B. Ganapathisubramani, G. D. Weymouth
Flapping flight and swimming are increasingly studied both due to their intrinsic scientific richness and their applicability to novel robotic systems. Strip theory is often applie…
Span effect on the turbulence nature of flow past a circular cylinder
Bernat Font, Gabriel D. Weymouth, Vinh-Tan Nguyen +1
Turbulent flow evolution and energy cascades are significantly different in two-dimensional (2D) and three-dimensional (3D) flows. Studies have investigated these differences in ob…
Deep learning of the spanwise-averaged Navier-Stokes equations
Bernat Font, Gabriel D. Weymouth, Vinh-Tan Nguyen +1
Simulations of turbulent fluid flow around long cylindrical structures are computationally expensive because of the vast range of length scales, requiring simplifications such as d…
Deflected Wake Interaction of Tandem Flapping Foils
N. S. Lagopoulos, G. D. Weymouth, B. Ganapathisubramani
Symmetric flapping foils are known to produce deflected jets at high frequency-amplitude combinations even at a zero mean angle of attack. This reduces the frequency range of usefu…
Universal scaling law in drag-to-thrust wake transition of flapping foils
N. S. Lagopoulos, G. D. Weymouth, B. Ganapathisubramani
Reversed von Kármán streets are responsible for a velocity surplus in the wake of flapping foils, indicating the onset of thrust generation. However, the wake pattern cannot be pre…
Biologically inspired force enhancement for maritime propulsion and maneuvering
G D Weymouth
The move to high performance applications greatly increases the demand to produce large instantaneous fluid forces for high-speed maneuvering and improved power efficiency for sust…
Drag cancellation by added-mass pumping
F. Giorgio-Serchi, G. D. Weymouth
A submerged body subject to a sudden shape-change experiences large forces due to the variation of added-mass energy. While this phenomenon has been studied for single actuation ev…
Lily Pad: Towards Real-time Interactive Computational Fluid Dynamics
Gabriel D. Weymouth
Despite the fact that computational fluid dynamics (CFD) software is now (relatively) fast and freely available, it is still amazingly difficult to use. Inaccessible software impos…
Ultra-fast escape maneuver of an octopus-inspired robot
G. D. Weymouth, V. Subramaniam, M. S. Triantafyllou
We design and test an octopus-inspired flexible hull robot that demonstrates outstanding fast-starting performance. The robot is hyper-inflated with water, and then rapidly deflate…
The Numerical Simulation of Ship Waves Using Cartesian-Grid and Volume-of-Fluid Methods
Douglas G. Dommermuth, Thomas T. O'Shea, Donald C. Wyatt +5
Cartesian-grid methods in combination with immersed-body and volume-of-fluid methods are ideally suited for simulating breaking waves around ships. A surface panelization of the sh…
Physics-Based Learning Models for Ship Hydrodynamics
Gabriel D. Weymouth, Dick K. P. Yue
We present the concepts of physics-based learning models (PBLM) and their relevance and application to the field of ship hydrodynamics. The utility of physics-based learning is mot…