|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Three-Dimensional Heat Transfer Analysis for A Thermal Energy Storage Canister显示文摘High temperature latent thermal storage is one of the critical techniques for a solar dynamic power system. This paper presents results from heat transfer analysis of a phase change salt containment canister A three-dimensional analysis program is developed to model heat transfer in a PCM canister. Analysis include effects of asymmetric circumference heat flux, conduction in canister walls, liquid PCM and solid PCM, void volume change and void location, and conduction and radiation across PCM vapor void. The PCM phase change process is modeled using the enthalpy method and the simulation results are compared with those of other two- dimensional investigations. It’s shown that there are large difference with two-dimensional analysis, therefore the three-dimensional model is necessary for system design of high temperature latent thermal storage. | Hou Xinbin, Xin Yuming, Yang Chunxin, Yuan Xiugan (Dept.of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics, Beijing, 100083.) Dong Keyong (Stirling Engine Research and Develop Center, Shanghai Marine Diesel | 2001 | Journal of Thermal Science2001，10，1： | 9 |
| 2 | The investigation of internal solitary waves over a continental shelf-slope显示文摘Internal solitary waves(ISWs)always happen in marginal seas,where stable stratification exists.ISWs may carry large energy when they propagate and affect marine engineering constructions such as marine drilling platforms.Previous studies,including a large number of mooring observations and laboratory experiments,show the speed of ISWs will change when they pass by shelf slopes.Korteweg-de Vries(KdV)theory explain this phenomenon.In the paper,we use a laboratory experiment and a numerical model experiment to verify this theory.In the laboratory experiment,we injected two layers of water of different densities in a tank to simulate marine stratification and make ISWs.We use a CCD camera to record the whole process.The camera can take 16 photos per second.In the numerical experiment,we input the same original conditions as the laboratory one.The results of 18 different original conditions show the dimensionless factorδplays a key role in deciding the amplitudes and shapes of ISWs.The main conclusion also contains that small-amplitude waves match well with KdV theory while mKdV is better for largeamplitude waves.Whether the laboratory experiment or numerical experiment shows results with a high agreement.In future studies,we may use a numerical model with higher resolution to get analysis about phase speed and energy of ISWs. | MA Qian YUAN Chunxin LIN Xiaopei CHEN Xue’en | 2020 | Journal of Oceanology and Limnology2020，38，3： | 3 |
| 3 | A numerical study of generation and propagation of type-a and type-b internal solitary waves in the northern South China Sea显示文摘Numerical simulations based on a high-resolution three-dimensional MIT general circulation model(MITgcm)using realistic topography and tidal forcing are conducted to investigate the generation and propagation of the so-called type-a waves(large-amplitude rank-ordered wave packets)and type-b waves(isolated wave packets)in the northern South China Sea.At first,we summarized and analyzed the generation and propagation characteristics of these waves.Then,energy budget at the Luzon Strait is calculated.Energy generation has three local maxima every day,of which the largest one corresponds to the emergence of the type-a wave.Energy flux at the west boundary of the Luzon Strait shows two local maxima each day.The larger one is consistent with the generation of the type-a wave and the smaller one is in correspondence with the generation of the type-b wave.Sensitivity experiments are designed to explore the role of the east and west ridge of the Luzon Strait on the generation and propagation of the type-a and type-b waves.It is found that the east ridge is indispensable on the generation of the type-a wave while the west ridge has little contribution.The west ridge diminishes the type-a waves'amplitude but hardly changes their propagation speed.The type-b waves also come from perturbation signals which originate from the east ridge and are enhanced in amplitude and reduced in propagation speed by the west ridge. | Zhi Zeng Xueen Chen Chunxin Yuan Shengquan Tang Lequan Chi | 2019 | Acta Oceanologica Sinica2019，38，11： | 2 |
| 4 | Drop dis- tributions and numerical simulation of dropwise condensa- tion heat transfer 显示文摘 | WU Yuting YANG Chunxin YUAN Xiugan | 2001 | International Journal of Heat and Mass Transfer2001，44，23： | 1 |
| 5 | New 3D graphical representation of DNA seqence and their numerical characterization显示文摘 | Chunxin Yuan Bo Liao Tianming Wang | 2003 | Chem Phy Letters2003，397，56： | 1 |
| 6 | New 3D graphical representation of DNA sequences and their numerical characterization显示文摘 | Yuan Chunxin Liao Bo Wang Tianming | 2003 | Chemical Physics Letters2003，379，56： | 1 |
| 7 | New 3D Graphical representation of DNA sequence and their numerical characterization显示文摘 | YUAN Chunxin LIAO BO WANG Tianming | 2003 | Chemical Physics Letters2003，397，： | 1 |
| 8 | New 3D graphical representation of DNA sequences and their numerical characterization 显示文摘 | Yuan Chunxin Liao Bo Wang Tianming | 2003 | Chem Phys Lett2003，379，5： | 1 |
| 9 | New 3-D graphical representation of DNA sequences and their numerical characterization 显示文摘 | Yuan Chunxin Liao Bo Wang Tianming | 2003 | Chem Phycics Lett2003，379，： | 1 |
| 10 | Drop distributions and numerical simulation of dropwise condensation heat transfer显示文摘 | WU Yuting YANG Chunxin YUAN Xiugan | 2001 | Int J Heat Mass Transfer2001，44，23： | 1 |
| 11 | A preliminary study on an upper ocean heat and salt content of the western Pacific warm pool region显示文摘On the basis of Argo profile data of the temperature and salinity from January 2001 to July 2014, the spatial distributions of an upper ocean heat content(OHC) and ocean salt content(OSC) of the western Pacific warm pool(WPWP) region and their seasonal and interannual variations are studied by a cyclostationary empirical orthogonal function(CSEOF) decomposition, a maximum entropy spectral analysis, and a correlation analysis.Probable reasons for variations are discussed. The results show the following.(1) The OHC variations in the subsurface layer of the WPWP are much greater than those in the surface layer. On the contrary, the OSC variations are mainly in the surface layer, while the subsurface layer varies little.(2) Compared with the OSC, the OHC of the WPWP region is more affected by El Ni?o-Southern Oscillation(ENSO) events. The CSEOF analysis shows that the OHC pattern in mode 1 has strong interannual oscillation, with eastern and western parts opposite in phase. The distribution of the OSC has a positive-negative-positive tripole pattern. Time series analysis shows that the OHC has three phase adjustments with the occurrence of ENSO events after 2007, while the OSC only had one such adjustment during the same period. Further analysis indicates that the OHC variations are mainly caused by ENSO events, local winds, and zonal currents, whereas the OSC variations are caused by much more complex reasons. Two of these, the zonal current and a freshwater flux, have a positive feedback on the OSC change in the WPWP region. | Xiaoxin Yang Xiaofen Wu Zenghong Liu Chunxin Yuan | 2019 | Acta Oceanologica Sinica2019，38，3： | 0 |
| 12 | Bioinspired Scalable Total Synthesis of Opioids显示文摘As one of the largest and most representative families of natural medicines harvested from plants,the mass production of opioids legitimately occupies large,worldwide farmland cultivation of opium poppies,causing severe regulation limitations and supply uncertainty.Due to their complex structures,the chemical synthesis of opioids has been criticized as infeasible for large-scale production in view of lengthy synthetic steps and overall low efficiency. | Xiaohan Zhou Wenfei Li Ruijie Zhou Xiaoqing Wu Yuan Huang Wenlong Hou Chunxin Li Yifan Zhang Wei Nie Yu Wang Hao Song Xiao-Yu Liu Zhibing Zheng Fei Xie Song Li Wu Zhong Yong Qin | 2021 | CCS Chemistry2021，3，9： | 0 |
| 13 | Flexible radio-frequency micro electro-mechanical switch towards the applications of satellite communications显示文摘This paper presents a flexible radio-frequency microelectromechanical system(RF MEMS)switch integrated on cyclo-olefin polymer(COP)substrate using a modified surface MEMS processing technology,which could be used in the 17-19 GHz frequency band of satellite communication.Through systematic simulation analysis,it is found that flexible RF MEMS switch can achieve certain bending radius by miniaturizing the electronic dimension,without degrading the RF performance.It is demonstrated that the RF characteristics of flexible RF MEMS switch with special anchor structural design,fabricated by modified surface MEMS processing,are not sensitive to bending deformation under the curvature of 0 mm^(-1),0.05 mm^(-1),0.10 mm^(-1).Furthermore,the range of bending curvature which will affect the RF characteristics is given through systematic simulation.The flexible RF MEMS switch with high process compatibility and stable RF performance is believed to be promising candidates for future microwave communications and other consumer electronics. | Yingli Shi Chao Zhou Zibo Cao Yurong He Jingwen Guo Chunxin Li Qianhong Wu Kui Liang Yanzhao Li Yuan Lin | 2022 | npj Flexible Electronics2022，6，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员