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Browsing University of Hertfordshire by Author "Chen, Yong"
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An aerodynamic analysis of a novel small wind turbine based on impulse turbine principles
Ying, Pei; Chen, Yong; Xu, Yigeng (2015-03-31)The paper presents both a numerical and an experimental approach to study the air flow characteristics of a novel small wind turbine and to predict its performance. The turbine model was generated based on impulse turbine ... -
Aerodynamic characteristics study and possible improvements of MAAT feeder airships
Voloshin, Vitaly; Chen, Yong; Neydorf, Rudolf; Boldyreva, Anna (2013-12-19)This paper is dedicated to the study and improvement of the aerodynamic properties of the feeder airship in the context of MAAT project. FP7 MAAT project is based on the concept of two different types of airships (the ... -
Aeroelastic vibration control of hybrid airships using Regenerative Actuators
Patel, Vatsalkumar; Khoshnoud, Farbod; Pissanidis, Georgios; Montalvão, Diogo; Chen, Yong (2013-07)In this paper, an experiment is performed to investigate aeroelastic vibration control of a wing using regenerative piezoelectric actuators. Instead of the wing a plate with one pair of the piezoelectric actuator is used ... -
An analytical model for the identification of the threshold of stress intensity factor range for crack growth
Grasso, Marzio; De Iorio, Antonio; Xu, Yigeng; Haritos, George; Mohin, Muhodin; Chen, Yong (2017-01-18)The value of the stress intensity factor (SIF) range threshold (∆K_th ) for fatigue crack growth (FCG) depends highly on its experimental identification. The identification and application of ∆K_(th )are not well established ... -
Computational and Experimental Investigations of an Omni-Flow Wind Turbine
Ying, Pei; Chen, Yong; Xu, Yigeng; Tian, Yuan (2015-05-15)Both numerical and experimental studies were conducted to evaluate the performance of an omni-flow wind turbine designed to provide renewable electricity on the top of urban buildings like skyscrapers. The numerical approach ... -
Computational Modelling of Blades for a Novel Wind Turbine
Ying, Pei; Chen, Yong; Xu, Yigeng (Institute of Electrical and Electronics Engineers (IEEE), 2012-06)Blades of a novel wind turbine system based on the principles of impulse turbines were designed in 3D and tested by computational fluid dynamics (CFD) simulation. This new turbine system is suitable to construct on the ... -
Computational Study of a Small Scale Vertical Axis Wind Turbine (VAWT) : Comparative Performance of Various Turbulence Models
Aresti, Lazaros; Tutar, Mustafa; Chen, Yong; Calay, Rajnish (2013-09)The paper presents a numerical approach to study of fluid flow characteristics and to predict performance of wind turbines. The numerical model is based on Finite-volume method (FVM) discretization of unsteady Reynolds-averaged ... -
Delamination threshold load of composite laminate under low-velocity impact
Xu, Yigeng; Shen, Zeng; Tiu, William; Xu, Yizhong; Chen, Yong; Haritos, George (2013)A key factor affecting the use of carbon fibre reinforced composite laminates is the low velocity impact damage which may be introduced accidentally during manufacture, operation or maintenance of the component. Among the ... -
Economic Analysis of Domestic Combined Heat and Power System in the UK
Sutharssan, Thamo; Montalvao, Diogo; Chen, Yong; Wang, Wen-Chung; Pisac, Claudia (2016-01-21)A combined heat and power (CHP) system is an efficient and clean way to generate power (electricity). Heat produced by the CHP system can be used for water and space heating. The CHP system which uses hydrogen as fuel ... -
The effects of surface modifications of multiwalled carbon nanotubes on their dispersibility in different solvents and poly(ether ether ketone)
Cao, Zongshuang; Qiu, Li; Yang, Yongzhen; Chen, Yong; Liu, Xuguang (2014-11)The effects of surface modifications of multi-walled carbon nanotubes (MWCNTs) on their dispersibility in different solvents and poly (ether ether ketone) (PEEK) have been studied. MWCNTs were treated by mixed acids to ... -
Energy harvesting from suspension system using regenerative force actuators
Khoshnoud, Farbod; Sundar, D. B.; Badi, Mohamed; Chen, Yong; Calay, Rajnish; De Silva, C.W. (2013)In this paper harvesting vibration energy from suspension is investigated. Theoretical values for the harvested energy are calculated. Experimental evaluation of the energy is performed using vehicle road simulation ... -
Energy regeneration from suspension dynamic modes and self-powered actuation
Khoshnoud, Farbod; Yuchi Zhang, Yuchi; Ray Shimura, Ray; Amir Shahba, Amir; Guangming Jin, Guangming; Pissanidis, Georgios; Chen, Yong; De Silva, Clarence W. (2015-10-31)This paper concerns energy harvesting from vehicle suspension systems. The generated power associated with bounce, pitch and roll modes of vehicle dynamics is determined through analysis. The potential values of power ... -
Experimental evaluation into novel, low cost, modular PEMFC stack
Scott, Paul; Calay, Rajnish; Chen, Yong (Elsevier, 2012)The Polymer Electrolyte Membrane Fuel Cell (PEMFC), despite being regarded as an ideal replacement to the internal combustion engine, is still not an economically attractive pri-mover due to a number of key challenges that ... -
Experimental investigation into a novel Modular PEMFC fuel cell stack
Scott, Paul; Chen, Yong; Calay, Rajnish; Bhinder, F. (2015-04-23)The polymer electrolyte membrane fuel cell (PEMFC), despite being regarded as an ideal replacement to the internal combustion engine, is still not an economically attractive prime-mover due to a number of key challenges ... -
Fluorescent carbon quantum dots synthesized by chemical vapor deposition: : An alternative candidate for electron acceptor in polymer solar cells
Cui, Bo; Yan, Lingpeng; Gu, Huimin; Yang, Yongzhen; Liu, Xuguang; Ma, Chang-Qi; Chen, Yong; Jia, Husheng (2018-01-01)Excitation-wavelength-dependent blue-greenish fluorescent carbon quantum dots (CQDs) with graphite structure were synthesized by chemical vapor deposition (CVD) method. In comparison with those synthesized by hydrothermal ... -
Frictional properties of cerium oxide nanoparticles in water
Zhao, Chuanli; Ren, Guogang; Chen, Yong (2011) -
An integrated Solar-Fuel Cell Powered System for Airships
Khoshnoud, Farbod; Chen, Yong; Calay, Rajnish (2012-06)Development of a general model of power, propulsion and control of a novel airship is discussed in this paper. The airship design is based on the concept of the Multibody Advanced Airship for Transport (MAAT). The energy ... -
Investigation on surface drying and energy savings of the hybrid dryer
Wang, Wen Chung; Calay, Rajnish; Chen, Yong (Research Publishing Services, 2010)The feasibility study of a novel heat pump integrated with rotary dehumidifier (desiccant wheel) system for drying process is conducted to obtain the design parameters of the hybrid dryer. The system employed a refrigerant ... -
Load sequence effect on fatigue damage
Xu, Y.G.; Wang, L.; Chen, Yong; Tiu, W. (2012)Reliable damage tolerant design of airframe structures relies on the accurate life prediction of fatigue cracks propagating from a detectable size to the critical size, which is challenging due to the complex load sequence ... -
Modelling and analysis of a novel wind turbine structure
Zhang, Xu; Chen, Yong; Calay, Rajnish (2013)In the present study, a novel unidirectional wind turbine structure is introduced, which is specially designed for an urban environment. A computational modeling has been conducted to investigate the effect of the new ...