A5081690985- Biomimetic flight and propulsion mechanisms
- Plant Water Relations and Carbon Dynamics
- Aerospace Engineering and Energy Systems
- Fluid Dynamics and Turbulent Flows
- Tree Root and Stability Studies
- Aeolian processes and effects
- Particle Dynamics in Fluid Flows
- Underwater Vehicles and Communication Systems
- Computational Fluid Dynamics and Aerodynamics
- Manufacturing Process and Optimization
- Fluid Dynamics and Vibration Analysis
- Micro and Nano Robotics
National University of Singapore
2017-2020
The clap-and-fling effect, first observed in a number of insects, serves as lift-enhancing mechanism for bio-inspired flapping wing micro aerial vehicles (MAV). In our comprehensive literature survey, we observe that the effect manifests differently insects and contemporary MAVs; have active control over angle attack stroke plane wing, whereas kinematic parameters an MAV's flexible wings are determined passively. Although there is consensus flinging motion significantly enhances aerodynamic...
In this work, we adopt the integration of L-system fractal tree generation, 3D printed wind tunnel modeling, and computational fluid dynamics (CFD) simulation approach to model effect on a single tree. We compare agreement between CFD simulations measurements rigid branched structures resembling trees. First, mesh models based species growth branching patterns are developed represent for wind–tree modeling. Subsequently, scaled-down is generated with 3D-printing subjected testing load cell...
Green urbanism has stimulated more research on the aerodynamics of tree in recent years. The insight gained studying wind load trees would mitigate risk falling and enable sustainable landscape planning. However, deciphering effect is a daunting task because come various species, shapes sizes. In this study, we aim at conducting tunnel tests species trees, including measuring respective drag coefficient turbulent flow field using force balance particle image velocimetry system. experiment...
This work presents an experimental study of the aerodynamics different types wings during clap-and-peel mechanism on a hovering flapping wing Micro Aerial Vehicle (MAV) platform. A comprehensive analysis phenomenon through force measurement, motion capture and flow measurement using Particle Image Velocimetry in fixed position was performed. The field around two with identical dimensions but deformation characteristics is compared to understand role their flexibility enhancing benefits...
Unmanned Aerial Vehicles (UAVs) are highly effective platforms for surveillance, remote sensing, search and rescue operations other missions requiring demanding long endurance. Small scale UAVs normally operate at the low Reynolds numbers, where laminar separation bubbles observed. These severely limit performance by inhibiting lift increasing drag, thus decreasing endurance factor. Two-element airfoils address these difficulties re-energizing boundary layer to mitigate ill-effects of or...