期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Simulation of Cavitating Flow around a 2-D Hydrofoil 被引量:7
1
作者 黄胜 何苗 +1 位作者 王超 常欣 《Journal of Marine Science and Application》 2010年第1期63-68,共6页
In order to predict the effects of cavitation on a hydrofoil, the state equations of the cavitation model were combined with a linear viscous turbulent method for mixed fluids in the computational fluid dynamics (CFD)... In order to predict the effects of cavitation on a hydrofoil, the state equations of the cavitation model were combined with a linear viscous turbulent method for mixed fluids in the computational fluid dynamics (CFD) software FLUENT to simulate steady cavitating flow. At a fixed attack angle, pressure distributions and volume fractions of vapor at different cavitation numbers were simulated, and the results on foil sections agreed well with experimental data. In addition, at the various cavitation numbers, the vapor fractions at different attack angles were also predicted. The vapor region moved towards the front of the airfoil and the length of the cavity grew with increased attack angle. The results show that this method of applying FLUENT to simulate cavitation is reliable. 展开更多
关键词 2-d hydrofoil cavitation model cavitation flow
在线阅读 下载PDF
Model-guided design of a high performance and durability Ni nanofiber/ceria matrix solid oxide fuel cell electrode
2
作者 Mengzheng Ouyang Antonio Bertei +11 位作者 Samuel J.Cooper Yufei Wu Paul Boldrin Xinhua Liu Masashi Kishimoto Huizhi Wang Max Naylor Marlow Jingyi Chen Xiaolong Chen Yuhua Xia Billy Wu Nigel P.Brandon 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第5期98-112,共15页
Mixed ionic electronic conductors(MIECs)have attracted increasing attention as anode materials for solid oxide fuel cells(SOFCs)and they hold great promise for lowering the operation temperature of SOFCs.However,there... Mixed ionic electronic conductors(MIECs)have attracted increasing attention as anode materials for solid oxide fuel cells(SOFCs)and they hold great promise for lowering the operation temperature of SOFCs.However,there has been a lack of understanding of the performance-limiting factors and guidelines for rational design of composite metal-MIEC electrodes.Using a newly-developed approach based on 3 D-tomography and electrochemical impedance spectroscopy,here for the first time we quantify the contribution of the dual-phase boundary(DPB)relative to the three-phase boundary(TPB)reaction pathway on real MIEC electrodes.A new design strategy is developed for Ni/gadolinium doped ceria(CGO)electrodes(a typical MIEC electrode)based on the quantitative analyses and a novel Ni/CGO fiber-matrix structure is proposed and fabricated by combining electrospinning and tape-casting methods using commercial powders.With only 11.5 vol%nickel,the designer Ni/CGO fiber-matrix electrode shows 32%and 67%lower polarization resistance than a nano-Ni impregnated CGO scaffold electrode and conventional cermet electrode respectively.The results in this paper demonstrate quantitatively using real electrode structures that enhancing DPB and hydrogen kinetics are more efficient strategies to enhance electrode performance than simply increasing TPB. 展开更多
关键词 Solid oxide fuel cells ELECTROSPINNING Electrochemical impedance spectroscopy TOMOGRAPHY 2-d model CERIA
在线阅读 下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部