7 papers
Multi-objective Bayesian optimization of rigid and flexible nozzles for energy-efficient pulsed jet propulsion
Paras Singh, Yukesh Karki, Victor Hernandez +3
The biomechanics of pulsed-jet propulsion in aquatic animals, including squids and jellyfish, provide valuable insights into energy-efficient locomotion. In these organisms, flexib…
Squid funnels time their elastic recoil to amplify pulsed jets
Daehyun Choi, Paras Singh, Ian Bergerson +12
Pulsed jets propel squid across nearly four orders of magnitude in body size. Each pulse leaves through the funnel, a soft nozzle, but whether its compliance acts within a pulse is…
Computational and reduced-order modelling of elastic wave-driven impulse enhancement in pulsed jets through passively flexible nozzles
Daehyun Choi, Paras Singh, Saad Bhamla +1
Elastic wave propagation and energy exchange in passively deforming cylindrical nozzles are investigated through three-dimensional, two-way fluid-structure interaction simulations.…
Efficacy of the Weak Formulation of Sparse Nonlinear Identification in Predicting Vortex-Induced Vibrations
Haimi Jha, Hibah Saddal, Chandan Bose
Vortex-induced vibrations (VIV) remain a canonical yet complex manifestation of fluid-structure interactions, where coupled nonlinear dynamics govern the motion of bluff bodies. Fo…
Effects of Plunging Acceleration on the Passive Morphing of Avian-Inspired Flexible Foils
Hibah Saddal, Lucky Babu Jayswal, Chandan Bose
This study investigates the dynamics of passively morphing foils under accelerated plunging, establishing mechanistic links between transient kinematics, structural compliance, and…
Effect of sweep angle on three-dimensional vortex dynamics over plunging wings
Alex Cavanagh, Chandan Bose, Kiran Ramesh
The effects of sweep angle and reduced frequency on the leading-edge vortex (LEV) structure over flapping swept wings in the Reynolds number () range of are…
Effect of a fixed downstream cylinder on the flow-induced vibration of an elastically-supported primary cylinder
Junlei Wang, Shenfang Li, Daniil Yurchenko +2
This paper numerically investigates the influence of a fixed downstream control cylinder on the flow-induced vibration of an elastically-supported primary cylinder. These two cylin…