A5016611632- Wind and Air Flow Studies
- Aerodynamics and Fluid Dynamics Research
- Fluid Dynamics and Vibration Analysis
- Fluid Dynamics and Turbulent Flows
- Aerospace Engineering and Energy Systems
- Probabilistic and Robust Engineering Design
- Aeolian processes and effects
- Structural Engineering and Vibration Analysis
- Structural Health Monitoring Techniques
- Wind Energy Research and Development
- Lattice Boltzmann Simulation Studies
- Meteorological Phenomena and Simulations
- Seismic and Structural Analysis of Tall Buildings
- Biomimetic flight and propulsion mechanisms
- Particle Dynamics in Fluid Flows
- Tropical and Extratropical Cyclones Research
- Hydrology and Sediment Transport Processes
- Energy Load and Power Forecasting
- Vibration and Dynamic Analysis
- Seismic Performance and Analysis
- Masonry and Concrete Structural Analysis
- Avian ecology and behavior
- Remote Sensing and Land Use
- Composite Structure Analysis and Optimization
- Fluid Dynamics Simulations and Interactions
National Taipei University of Technology
2020-2023
Tamkang University
2013-2020
Aerodynamic and pressure coefficients of a sectional model sharp-edged square cylinder, at zero incidence angle, are experimentally evaluated in accelerating flow conditions through the use multiple-fan wind tunnel. Different unsteady flows reproduced, characterized by parameters which dictate initial target velocities, as well acceleration deceleration, temporal spacing between ramp-up ramp-down. The turbulent reproduced during campaign consistent with those typical full-scale downbursts....
An extensive experimental campaign has been carried out in a multiple-fan wind tunnel to study the effects of flow acceleration on sectional model sharp-edged square cylinder. Different levels positive and negative are reproduced, which compatible with those induced by full-scale thunderstorm outflows. Various initial final conditions also explored and, all conditions, multiple test repeats order obtain satisfactory ensemble averages. Particular attention is devoted acquisition signals...
The purpose of the current study is to emphasize characteristics and phenomena leading-edge twisting in flapping wing vehicles. A fused deposition modeling (FDM) 3D printing method applied develop mechanisms with bevel gears achieve twisting. Three were developed, including simple only (type-A1: normal servo mechanism), continuous (type-B: servo-bevel gear restricted via mechanical stoppers (type-B1: mechanism adjustable stoppers). Utilizing a low-speed wind tunnel, aerodynamic performances...
ABSTRACT Roof curvature and Reynolds number effect significantly define the characteristics of wind pressures on domed roof structures. Once flow separates from surface, apparent changes in aerodynamic coefficients or non-Gaussian wind-induced pressure spectra are expected. This paper investigated peak factors roofs under a simulated suburban boundary layer flow. By estimating higher statistic moments, skewness kurtosis coefficients, adopting moment-based Hermite polynomial translation...
The aerodynamics of airfoils can be seen in a wide range applications. To obtain the aerodynamic loads, geometrically-scaled airfoil sections are tested wind tunnels. However, due to limited space tunnel, mismatch Reynolds numbers may lead different loads. Previous works showed that decreased lifts and increased drag coefficients associated with lower numbers, which accompanied by changes ambient flow, such as sizes separation bubbles wake vortices. Although insightful, few direct...
Estimating the wind-induced responses of high-rise buildings requires a detailed investigation wind force characteristics and structural dynamics, especially when an existing neighboring building has equivalent volume at adjacent locations. The interference effects caused by such may seriously alternate loading on target further affect its to safety or habitability evaluation. This research investigates under turbulent boundary layer flows based series tunnel tests. study mainly concerns...
ABSTRACT This paper investigates the wind forces acting on two principal buildings interfered by a very closely located dummy building. For study, high-frequency force balancer is used to measure over-turning moments in along-wind and cross-wind directions well-simulated turbulent boundary layer flow. The are made into square tapered cylinder respectively; building that produces various interference effects when its relative location adjusted. Results show response estimations for safety...
Yi-Chao Li, Chii-Ming Cheng, Fuh-Min Fang, Chen-Hsin Chang, Yuan-Lung Lo Research Fellow, Wind Engineering Center, Tamkang University, New Taipei City, 251, Taiwan, liyichao223@gmail.com Professor, Department of Civil Engineering, cmcheng@mail.tku.edu.tw National Chung Hsing Taichung, 250, fmfang@nchu.edu.tw cc527330@mail.tku.edu.tw Assistant yllo@mail.tku.edu.tw