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An Investigation of a Morphing Flapped Wing (2020)
Presentation / Conference
Madi, F., Kanaa, Z., Narayan, P., & Yao, Y. (2020, February). An Investigation of a Morphing Flapped Wing. Paper presented at Aerospace Europe Conference (AEC2020), Bordeaux, France

This study investigated the design, development, and validation of an alternative method to achieve morphing in wings through the implementation of a sliding mechanism concept. Performance was tested at a specific Reynolds number (Re = 0.62 × 106). M... Read More about An Investigation of a Morphing Flapped Wing.

A GIS-MOPSO integrated method for optimal design of grid-connected HRES for educational buildings (2019)
Presentation / Conference
Mokhtara, C., Negrou, B., Settou, N., Bouferrouk, A., Yao, Y., & Messaoudi, D. (2019, November). A GIS-MOPSO integrated method for optimal design of grid-connected HRES for educational buildings. Paper presented at 3rd International Symposium on Sustainable Hydrogen, Algiers

 Abstract. In this paper, an optimal design of a grid-connected PV-battery-hydrogen hybrid renewable energy system (HRES) at a University campus in Ouargla, Algeria is carried out. To achieve this goal, geographical information system (GIS), CAD sof... Read More about A GIS-MOPSO integrated method for optimal design of grid-connected HRES for educational buildings.

Influence of non-iterative time-advancement schemes on the aerodynamic prediction of pitching airfoils using dynamic mesh (2019)
Presentation / Conference
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. (2019, June). Influence of non-iterative time-advancement schemes on the aerodynamic prediction of pitching airfoils using dynamic mesh. Paper presented at 8th International Symposium on Physics of Fluids (ISPF8)

A pitching airfoil problem is addressed in this paper to assess the use of a non-iterative time-advancement (NITA) scheme with dynamic mesh method, and also to estimate possible CPU time savings. Simulations have shown that using a combination of dyn... Read More about Influence of non-iterative time-advancement schemes on the aerodynamic prediction of pitching airfoils using dynamic mesh.

Flow response to rapid morphing flap deflection (2019)
Presentation / Conference
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. (2019, March). Flow response to rapid morphing flap deflection. Paper presented at 54th 3AF International Conference on Applied Aerodynamics

Flow response to rapid morphing flap deflection is investigated at a Reynolds number based on chord of 0.62×10^6 for a 2D NACA 0012 airfoil fitted with a morphing Trailing-edge flap (TEF) at a range of angles of attack and morphing frequencies. T... Read More about Flow response to rapid morphing flap deflection.

Assessment of stress-blended eddy simulation model for accurate prediction of three-straight-bladed vertical axis wind turbine performance (2019)
Presentation / Conference
Syawitri, T. P., Yao, Y., Yao, J., & Chandra, B. (2019, March). Assessment of stress-blended eddy simulation model for accurate prediction of three-straight-bladed vertical axis wind turbine performance. Paper presented at 54th 3AF International Conference on Applied Aerodynamics

The performance of a three-straight-bladed vertical axis wind turbine at low tip speed ratio has been evaluated by detached eddy simulation (DES) with stress-blended eddy simulation (SBES) turbulence model. Two grid topologies around the blades, i.e.... Read More about Assessment of stress-blended eddy simulation model for accurate prediction of three-straight-bladed vertical axis wind turbine performance.

A review of current technical development in vertical axis wind turbine technologies and their braking system for low speed, urban and offshore areas application (2018)
Presentation / Conference
Syawitri, T., Yao, Y., & Chandra, B. (2018, October). A review of current technical development in vertical axis wind turbine technologies and their braking system for low speed, urban and offshore areas application. Paper presented at International Conference of Global Warming and Climate Change 2018

Recently, there are growing interests of using Vertical Axis Wind Turbine (VAWT) to harvest wind energy from low wind speed in urban areas to relatively high wind speed in offshore wind farms. Horizontal Axis Wind Turbine (HAWT) has been known to hav... Read More about A review of current technical development in vertical axis wind turbine technologies and their braking system for low speed, urban and offshore areas application.

CFD simulation of three-straight-bladed vertical axis wind turbine at low tip speed ratios (2018)
Presentation / Conference
Syawitri, T., Yao, Y., Chandra, B., & Yao, J. (2018, October). CFD simulation of three-straight-bladed vertical axis wind turbine at low tip speed ratios. Paper presented at International Conference of Global Warming and Climate Change 2018

This paper presents computational fluid dynamics (CFD) simulations of a three-straight-bladed Vertical Axis Wind Turbine (VAWT) operating at a wind speed of 9 m/s and low Tip Speed Ratio (TSR) ranging from 1.44 to 3.3. The turbine blade has NACA 0021... Read More about CFD simulation of three-straight-bladed vertical axis wind turbine at low tip speed ratios.

Further development of a variable camber morphing mechanism using the direct control airfoil geometry concept (2018)
Presentation / Conference
Loudon, K., Bouferrouk, A., Coleman, B., Hughes, F., Lewis, B., Parsons, B., …Yao, Y. (2018, July). Further development of a variable camber morphing mechanism using the direct control airfoil geometry concept. Paper presented at International Symposium of Sustainable Aviation

This paper reports on the design, manufacture and testing of an improved variable camber morphing wing mechanism following the study by Evans et al. (2016), who employed the so-called Direct Control Airfoil Geometry (DCAG) concept to actuate the trai... Read More about Further development of a variable camber morphing mechanism using the direct control airfoil geometry concept.

Aeroacoustics investigation of a harmonically morphing trailing edge flap (2018)
Presentation / Conference
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. P. (2018, March). Aeroacoustics investigation of a harmonically morphing trailing edge flap. Paper presented at 53rd 3AF International Conference on Applied Aerodynamics

In this paper, an aeroacoustic study of a NACA 0012 airfoil fitted with a morphing Trailing Edge Flap (TEF) was performed at conditions of an Angle of Attack (AoA) = 4º, Reynolds number = 0.62×10^6 and Mach number = 0.11. A modified parametrization m... Read More about Aeroacoustics investigation of a harmonically morphing trailing edge flap.

Slat broadband noise prediction of multi-element 30P30N airfoil by a hybrid RANS-LES method (2018)
Presentation / Conference
Peng, T., Yao, Y., & Zhu, Q. (2018, March). Slat broadband noise prediction of multi-element 30P30N airfoil by a hybrid RANS-LES method. Paper presented at 53rd 3AF International Conference on Applied Aerodynamics

This paper presents a combined CFD and CAA study to assess the slat noise emissions from a multi-element 30P30N airfoil at the 5-degree and 8-degree angle of attack, using a hybrid RANS-LES method. In this simulation, the structured mesh is used and... Read More about Slat broadband noise prediction of multi-element 30P30N airfoil by a hybrid RANS-LES method.

Equations of state for thrust modeling of ram accelerator at different bores (2017)
Presentation / Conference
Bauer, P., Bengherbia, T., Yao, Y., Knowlen, C., Bruckner, A., & Giraud, M. (2017, September). Equations of state for thrust modeling of ram accelerator at different bores. Presented at Italian Association of Aeronautics and Astronautics XXIV International Conference

The ram accelerator is a propulsion concept based on using shock-induced combustion to accelerate projectiles traveling at supersonic speeds in a launch tube pre-filled with a gaseous combustible mixture. Extensive experimental studies have been carr... Read More about Equations of state for thrust modeling of ram accelerator at different bores.

Direct numerical simulation of a tip-leakage vortex model in a planar duct with a longitudinal slit (2017)
Presentation / Conference
Fang, J., Gao, Y., Yao, Y., Liu, Y., & Lu, L. (2017, September). Direct numerical simulation of a tip-leakage vortex model in a planar duct with a longitudinal slit. Poster presented at UKTC Annual Review

A computational model of a planar duct with a cross flow injected from a longitudinal slit on the top of the duct is developed to study the tip-leakage vortex (TLV) which is one of the most important flow phenomena within the rotor of turbomachinery.... Read More about Direct numerical simulation of a tip-leakage vortex model in a planar duct with a longitudinal slit.

Zeolite supported Pd electrocatalyst nano-particle characterization (2017)
Presentation / Conference
Yao, J., & Yao, Y. (2017, July). Zeolite supported Pd electrocatalyst nano-particle characterization. Paper presented at ANM2017 Int conf. on advanced nano materials

Palladium (Pd) as one of platinum (Pt) group metals has attracted significant attentions since it has shown good activities for hydrogen reaction (HOR) and oxygen reduction reaction (ORR) in fuel cell application and high solubility and mobility... Read More about Zeolite supported Pd electrocatalyst nano-particle characterization.

Ex-situ exafs investigation of zeolite supported pt electrocatalyst structure (2017)
Presentation / Conference
Yao, J., & Yao, Y. (2017, June). Ex-situ exafs investigation of zeolite supported pt electrocatalyst structure. Paper presented at The Seventh International Symposium on Physics of Fluids (ISPF7)

The electrochemical performance of zeolite supported 1.5 wt% Pt electrocatalyst in fuel cell has been discussed in previous studies [1, 2]. This work will focus on investigating the influence of Pt loading and Pt deposition methods on Pt electrochemi... Read More about Ex-situ exafs investigation of zeolite supported pt electrocatalyst structure.

Large-scale secondary vortices in the turbulent channel flow induced by active wall actuations (2017)
Presentation / Conference
Ni, W., Lu, L., Fang, J., Yao, Y., & Moulinec, C. (2017, June). Large-scale secondary vortices in the turbulent channel flow induced by active wall actuations. Paper presented at The Seventh International Symposium on Physics of Fluids (ISPF7)

Direct numerical simulations (DNS) of the turbulent channel flow with spanwise alternatively distributed out-of-phase (OP) and in-phase (IP) wall actuations strips (SADS) are conducted to investigate the characteristics of the large-scale streamwise... Read More about Large-scale secondary vortices in the turbulent channel flow induced by active wall actuations.

Large-scale Secondary Vortices Generated by Wall Actuations: Application to the Turbulent Channel Flow (2017)
Presentation / Conference
Actuations: Application to the Turbulent Channel Flow. Paper presented at Parallel CFD Conference 2017

The large-scale streamwise vortex (LSSV) generation mechanism in the turbulent boundary layer is closely linked to the turbulent mixing process and its potential to suppress flow separation. Direct numerical simulations (DNSs) of weakly compressible... Read More about Large-scale Secondary Vortices Generated by Wall Actuations: Application to the Turbulent Channel Flow.

Unsteady parametrization of a morphing wing design for improved aerodynamic performance (2017)
Presentation / Conference
Abdessemed, C., Yao, Y., Narayan, P., & Bouferrouk, A. (2017, March). Unsteady parametrization of a morphing wing design for improved aerodynamic performance. Paper presented at 52nd 3AF International Conference on Applied Aerodynamics

A morphing wing is a bio-inspired concept where all moving parts e.g. slats/flaps are replaced with a deformable body. This paper describes a methodology that uses modified parametrization methods to define a morphing geometry, and applies user-defin... Read More about Unsteady parametrization of a morphing wing design for improved aerodynamic performance.

DES prediction of a 3-element high-lift airfoil with a blown flap (2017)
Presentation / Conference
Ouyang, B., Yao, Y., & Bouferrouk, A. (2017, March). DES prediction of a 3-element high-lift airfoil with a blown flap. Presented at 52nd 3AF International Conference on Applied Aerodynamics

Over the last 20 years, research on aerodynamic flow control methods has received considerable attention due to its ability to improve aircraft aerodynamic performance beyond current capabilities (Ternoy et al., 2013). It is evident that a successful... Read More about DES prediction of a 3-element high-lift airfoil with a blown flap.

U-model enhanced control of nonminimum-phase dynamic systems (2016)
Presentation / Conference
Qiu, J., Zhu, Q., Nibouche, M., & Yao, Y. (2016, November). U-model enhanced control of nonminimum-phase dynamic systems. Paper presented at 8th International Conference on Modelling, Identification and Control (ICMIC-2016)

In this study, U-model based control system design methodology is expanded into control of nonminimum-phase (NMP) dynamic systems. With U-model framework, a desired minimum-phase (MP) plant is established, which forms as a generic prototype. To achie... Read More about U-model enhanced control of nonminimum-phase dynamic systems.

Numerical investigation of wavy-annular airwater two-pase flow in a small horizontal pipe (2016)
Presentation / Conference
Arini, A., Yao, J., Gordon, T., & Yao, Y. (2016, September). Numerical investigation of wavy-annular airwater two-pase flow in a small horizontal pipe. Paper presented at EFCM11 11th European Fluid Mechanics Conference

This study has been carried out using Computational Fluid Dynamics (CFD) to investigate the annular two phase flow behavior that flow pattern has some desirable features for renewable energy system application. The circumferential distribution of t... Read More about Numerical investigation of wavy-annular airwater two-pase flow in a small horizontal pipe.