A5036078394- Biomimetic flight and propulsion mechanisms
- Erythrocyte Function and Pathophysiology
- Advanced ceramic materials synthesis
- Blood properties and coagulation
- Micro and Nano Robotics
- Advanced materials and composites
- Fluid Dynamics and Vibration Analysis
- Lattice Boltzmann Simulation Studies
- Fluid Dynamics and Turbulent Flows
- Metal Alloys Wear and Properties
- Metal and Thin Film Mechanics
- Wave and Wind Energy Systems
- Tribology and Wear Analysis
- Aluminum Alloys Composites Properties
- Lubricants and Their Additives
- Underwater Vehicles and Communication Systems
- Microstructure and Mechanical Properties of Steels
- Recycling and utilization of industrial and municipal waste in materials production
- Vibration and Dynamic Analysis
- Ocean Waves and Remote Sensing
- Lipid Membrane Structure and Behavior
- Rheology and Fluid Dynamics Studies
- High-Temperature Coating Behaviors
- Aerospace Engineering and Energy Systems
- Fluid Dynamics Simulations and Interactions
University of Wollongong
2013-2025
University of California, San Diego
2016-2025
Qinghai University Affiliated Hospital
2025
Second People’s Hospital of Yibin
2025
Tsinghua–Berkeley Shenzhen Institute
2024
Southern University of Science and Technology
2020-2023
Hong Kong Polytechnic University
2022
The University of Sydney
2020
UNSW Sydney
2016-2020
University of Strathclyde
2020
We employ a three-dimensional, nonlinear inviscid numerical method, in conjunction with experimental data from live fish and fish-like robotic mechanism, to establish the three-dimensional features of flow around body swimming straight line, identify principal mechanisms vorticity control employed swimming. The computations contain no structural model for hence recoil correction. First, we show near-body structure produced by travelling-wave undulations bodies tuna giant danio. As revealed...
By using a Navier–Stokes model, we examine novel flow energy harvesting device consisting of flapping foil mounted on damper (representing the power generator) and rotational spring. Self-induced self-sustained motions, including heaving motion h(t) pitching α(t), are excited by an incoming extraction is achieved from response. Depending upon configuration system mechanical parameters (e.g., location axis stiffness spring), four different responses recorded: (i) remains stable in its initial...
Inspired by the correlation between propulsion efficiency of a flapping foil propeller and stability wake behind it (which leads to optimal Strouhal number for propulsion), we numerically simulated heaving/pitching in energy harvesting regime, investigated relation efficiency. The base flow is computed using Navier–Stokes algorithm analysis performed via Orr–Sommerfeld equation. found be convectively unstable frequency most mode f w determined. case when ~ coincides with maximum system (...
As demonstrated in recent studies, the bioinspired flapping foils are capable of harvesting kinetic energy from incoming wind or current. A practical measure to achieve this is via coupling between different modes a system with multiple degrees freedom. typical scenario includes external activation one motion mode and extracting mechanical other that follow. In study we create numerical model based upon Navier–Stokes equations investigate performance such low Reynolds numbers. The effects...
Motivated by the discovery that living creatures may be able to enhance their locomotion capability through passive or active deformations of wings fins, we carry out a fully coupled fluid-structure interaction study investigate flapping motion foil with either chordwise spanwise flexibility. We employ model, which accounts for fluid dynamics using boundary-element method and structural two-dimensional nonlinear thin-plate model. With this approach, numerically effect deformation on...
To quantitatively predict the mechanical response and mechanically induced remodeling of red blood cells, we developed a multiscale method to correlate distributions internal stress with overall cell deformation. This consists three models at different length scales: in complete level membrane is modeled as two distinct layers continuum shells using finite element (Level III), which skeleton-bilayer interactions are depicted slide lateral (i.e., in-plane) direction (caused by mobility...
Inspired by the recent experiment on erythrocytes (red blood cells, RBCs) in weak shear flows Dupire et al. (Proc. Natl Acad. Sci. USA, vol. 109, 2012, pp. 20808–20813), we conduct a numerical investigation to study dynamics of RBCs low-shear-rate applying multiscale fluid–structure interaction model. By employing spheroidal stress-free state cytoskeleton, are able numerically predict an important feature, namely that cell maintains its biconcave shape during tank-treading motions....
We examine numerically the performance of a thin foil reinforced by embedded rays resembling caudal fins many fishes. In our study, supporting are depicted as nonlinear Euler-Bernoulli beams with three-dimensional deformability. This structural model is then incorporated into boundary-element hydrodynamic to achieve coupled fluid-structure interaction simulation. Kinematically, we incorporate both homocercal mode dorso-ventral symmetry and heterocercal asymmetry. Using mode, results...
Abstract To quantitatively understand the correlation between molecular structure of an erythrocyte (red blood cell, RBC) and its mechanical response, to predict mechanically induced structural remodelling in physiological conditions, we developed a computational model by coupling multiscale approach RBC membranes with boundary element method (BEM) for surrounding Stokes flows. The membrane is depicted at three levels: whole cell level, finite (FEM) employed lipid bilayer cytoskeleton as two...
The deformability of insect wings is associated with the embedded skeleton (venation). In this paper, aerodynamic performance nonuniform flexibility computationally investigated. By using a two-dimensional rendition, underlying veins are modeled as springs, and membrane flexible plate. focus on effects detailed distribution vein upon such wing in generation lift force. Specifically, we interested finding importance leading edge strengthening. Towards end, performances three wings, rigid...
Abstract A numerical model of a ray-reinforced fin is developed to investigate the relation between its structural characteristics and force generation capacity during flapping motion. In this two-dimensional rendition, underlying rays are modelled as springs, membrane flexible but inextensible plate. The kinematics characterized by oscillation frequency phase difference different (which generates pitching motion). An immersed boundary method (IBM) applied solve fluid–structure interaction...
It is well known that structural flexibility enhances the performance of flapping foil propellers. There is, however, much less knowledge about effect deformability on flow energy extraction capacity foils. Following recent work an oscillating harvesting device with prescribed deformations (Liu et al., "A Bio-Inspired Study Tidal Energy Extraction Flexible Flapping Wings," Bioinspiration and Biomimetics, Vol. 8, No. 3, 2013, Paper 036011), fully coupled dynamics a harvester passively...
Vortex-induced vibrations (VIVs) of two flexible cylinders arranged in tandem are studied using a two-way fluid-structure interaction (FSI) method with different spacing ratios (Sx/D) at Reynolds number Re = 500 method. The main objective this study is to investigate the effect on hydrodynamic interactions and VIV responses these cylinders. found be similar classical small Sx/D. Once Sx/D large enough for vortices become detached from upstream cylinder, response cylinder typical whereas...
Abstract The compliance and conformability of soft robots provide inherent advantages when working around delicate objects or in unstructured environments. However, rapid locomotion robotics is challenging due to the slow propagation motion compliant structures, particularly underwater. Cephalopods overcome this challenge using jet propulsion added mass effect achieve rapid, efficient underwater without a skeleton. Taking inspiration from cephalopods, here we present an robot with body that...