|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | An experimental study on thermal characteristics of nanofluid with graphene and multi-wall carbon nanotubes显示文摘High-thermal conductivity enhancement of nanofluid is one of the promising topics of the nanoscience research field. This work reports the experimental study on the preparation of graphene(GN) and multi-walled carbon nanotubes(MWCNTs) based nanofluids with the assistance of sodium dodecyl benzene sulfonate(SDBS) and sodium dodecyl sulfate(SDS) surfactants, and their thermal behaviors. The present work suggests not a solution, but a solution approach and deduces a new conclusion by trying to resolve the agglomeration problem and improve the dispersibility of nanoparticles in the base fluid. The analysis results of FESEM, thermal conductivity, diffusivity, effusivity and heat transfer coefficient enhancement ratio of nanofluid with surfactants SDS and SDBS expose strong evidence of the dispersing effect of surfactant on the making of nanofluid. | A.K.M Mahmudul Haque Sunghyun Kwon Junhyo Kim Jungpil Noh Sunchul Huh Hanshik Chung Hyomin Jeong | 2015 | Journal of Central South University2015，22，8： | 5 |
| 2 | CFD analysis of sound pressure in tank gun muzzle silencer显示文摘The high pressure waves generated due to muzzle blast flow of tank gun during firing is a critical issue to examine. The impulsive noise from the gun has various negative effects such as damage of human bodies, damage of structures, creating an environmental, social problem and also military problems such as exposure of location of troops. This high pressure impulsive sound, generated during the blast flow, was studied and attenuated. An axisymmetric computational domain was constructed by employing Spalart Allmaras turbulence model. Approximately 90% of pressure and 20 dB of sound level are reduced due to the use of the three baffle silencer at the muzzle end of the gun barrel, in comparison with the tank gun without silencer. Also, the sound pressure level at different points in the ambient region shows the same attenuation in results. This study will be helpful to understand the blast wave characteristics and also to get a good idea to design silencer for large caliber weapon system. | Hafizur Rehman Hanshik Chung Taewhee Joung A.Suwono Hyomin Jeong | 2011 | Journal of Central South University2011，18，6： | 4 |
| 3 | CFD Anal- ysis of Flow Phenomena Inside Thermo Vapor Compressor Influenced By Operating Conditions and Converging Duct Angles显示文摘 | Jeong Hyomin Utomo Tony Ji Myoungkuk | 2009 | Journal of Mechanical Science and Technology2009，23，： | 1 |
| 4 | Thermal performance of multi-walled carbon nanotubes (MWCNTs) in aqueous suspensions with surfactants SDBS and SDS显示文摘 | Kuerbanjiang Wusiman Hyomin Jeong Kelimu Tulugan Hanshik Chung | 2012 | International Communications in Heat and Mass Transfer2012，，： | 1 |
| 5 | Effect of functionalized MWCNTs/water nanofluids on thermal resistance and pressure fluctuation characteristics in oscillating heat pipe 显示文摘 | TANSHEN Md R MUNKHBAYAR B NINE Md J CHUNG Hanshik JEONG Hyomin | 2013 | Int Comm Heat Mass Trans2013，48，： | 1 |
| 6 | Synthesis of a graphene tungsten composite with improved dispersibility of graphene in an ethanol solution and its use as a counter electrode for dye-sensitised solar ceils 显示文摘 | MUNKHBAYAR B NINE Md J JEOUN Jinseong JEONG M Ji Hyomin CHUNG Hanshik | 2013 | J Power Sources2013，230，： | 1 |
| 7 | Effect of grinding speed changes on dispersibility of the treated multi-walled carbon nanotubes in aqueous solution and its thermal characteristics 显示文摘 | MUNKItBAYAR B NINE Md J HWANG Seunghwa K1MB Junhyo BAE Kangyoul CHUNG Hanshik JEONG Hyomin | 2012 | Chemical Engineering and Processing2012，61，： | 1 |
| 8 | Thermal performance of multi-walled carbon nanotubes (MWCNTs) in aqueous suspensions with surfactants SDBS and SDS显示文摘 | Wusiman Kuerbanjiang Jeong Hyomin Tulugan Keilmu | 2013 | International Communications in Heat and Mass Transfer2013，41，： | 1 |
| 9 | Grinding Characteristic of Multi-walled Carbon Nanotubes-alumina Composite Particle显示文摘The synthesis of new materials containing multi-walled carbon nanotubes (MWCNTs) and the microstructure of alumina particles were investigated and characterized. The MWCNTs and alumina particles were ground under both the dry and wet conditions with various rotation speeds (200 - 400 r/min) in planetary ball milling machine, and their combination characteristics were described. The experimental results were examined by scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and particle sizing analysis (PSA). SEM result revealed that the combination of MWCNTs - Alumina particles mixed quite well under both the dry and wet grinding with rotation speed of 400 r/min. XRD characterization indicated the better result could get in ground samples at a rotation speed of 400 r/min. PSA result showed the particle size decreased with increase the grinding speeds. From the overall results, we observed that the grinding method can be used to synthesize new material with high efficiency. | B MUNKHBAYAR Nasan BAYARAA Hafizur REHMAN Junhyo KIM Hanshik CHUNG Hyomin JEONG | 2012 | Journal of Wuhan University of Technology(Materials Science)2012，27，6： | 1 |
| 10 | Electrostabilized homogeneous dispersion of boron nitride nanotubes in wide-range of solvents achieved by surface polarity modulation through pyridine attachment显示文摘Boron nitride nanotubes(BNNTs)show exceptional physical properties including high mechanical strength and thermal conductivity;however,their applications have been restricted due to limited dispersibility in processing solvents.Here,a novel BNNT dispersion method with exceptional dispersibility in a wide range of solvents has been demonstrated by surtace polarity modulation through short-molecule pyridine attachment.Nitrogen atoms in pyridine are selectively bonded to electron-deficient boron atoms of the BNNT surface through Lewis acid-base reaction,which changes the surface polarity of BNNTs from neutral to negative.Re-dispersing pyridine-attached BNNTs(Py-BNNTs)create a thick and stable electronic double layer(EDL),resulting in uniform dispersion of BNNTs in solvents with an exceptional solubility parameter range of 18.5-48 MPa^1/2.The uniform dispersion of BNNTs is maintained even after the mixing with diverse polymers.Finally,composites incorporating uniformly-distributed BNNTs have been realized,and extraordinary property enhancements have been observed.The thermal conductivity of 20 wt.%Py-BNNT/epoxy composite has been significantly improved by 69.6%and the tensile strength of 2 wt.%Py-BNNT/PVA has been dramatically improved by 75.3%.Our work demonstrates a simple and facile route to dispersing BNNTs in diverse solvents,consequently leading to selective utlization of BNNT dispersed solvents in various application fields. | Mi Se Chang Min-Sun Jang Sangsun Yang Jihun Yu Taehoon Kim Sedong Kim Hyomin Jeong Chong Rae Park Jae Won Jeong | 2020 | Nano Research2020，13，2： | 0 |
| 11 | Pressure distribution inside oscillating heat pipe charged with aqueous Al_2O_3 nanoparticles,MWCNTs and their hybrid显示文摘Effective thermal performance of oscillating heat pipe(OHP)is driven by inside pressure distribution.Heat transfer phenomena were reported in terms of pressure and frequency of pressure fluctuation in multi loop OHP charged with aqueous Al2O3 and MWCNTs/Al2O3 nanoparticles.The influences on thermal resistance of aqueous Al2O3,MWCNTs as well as the hybrid of them in OHP having 3 mm in inner diameter were investigated at 60% filling ratio.Experimental results show that thermal characteristics are significantly inter-related with pressure distribution and strongly depend upon the number of pressure fluctuations with time.Frequency of pressure depends upon the power input in evaporative section.A little inclusion of MWCNTs into aqueous Al2O3 at 60% filling ratio achieves the highest fluctuation frequency and the lowest thermal resistance at any evaporator power input though different nanofluids cause different thermal performances of OHPs. | Md.Riyad Tanshen Sinil Lee Junhyo Kim Donghoon Kang Jungpil Noh HanShik Chung HyoMin Jeong Sunchul Huh | 2014 | Journal of Central South University2014，21，6： | 0 |
| 12 | Newly established autonomous adaptive low-power instrument platform(AAL-PIP) chain on East Antarctic Plateau and operation显示文摘An autonomous adaptive low-power instrument platform(AAL-PIP)chain of six stations has been newly established on East Antarctic Plateau along the 40°geomagnetic meridian,to investigate interhemispheric geomagnetically conjugate current systems,waves,and other space weather phenomena in Polar Regions.These six stations,PG0 to PG5,which host low-power magnetometers(Fluxgate and Searchcoil),dual frequency GPS receivers,HF radio experiment,and run autonomously with solar power and two-way satellite communication,are designated at the geomagnetically conjugate(based on the International Geomagnetic Reference Field)locations of the West Greenland geomagnetic chain covering magnetic latitudes from 70°to 80°.We present the development,deployment,and operation of this chain,as well as the data collected by the chain and some preliminary scientific results showing evidence of interhemispheric asymmetries,which are important to better understand Solar Wind–Magnetosphere–Ionosphere(SWMI)coupling in Polar Regions.Recent investigations focus on magnetic impulse(MI)events,traveling convection vortices(TCVs),and ultra-low frequency(ULF)waves in the coupled southern and northern hemispheres. | Zhonghua XU Michael DHARTINGER Robert CLAUER Daniel WEIMER Kshitija DESHPANDE Hyomin KIM Stephen MUSKO Anna WILLER Thomas EDWARDS Shane COYLE Yuxiang PENG Dong LIN John BOWMAN | 2019 | Advances in Polar Science2019，30，4： | 0 |
| 13 | 基于小波分析的地磁甚低频脉动指数及其在高磁纬度地区甚低频脉动共轭对比研究中的应用显示文摘地磁甚低频脉动是甚低频磁流体波在磁层中传播的地面表现,开发近实时空间天气产品来监测这些地磁脉动至关重要。本文基于小波分析提出一种地磁甚低频脉动指数,并将其应用于研究在南极洲及西格陵兰岛的磁共轭位置观测到的地磁甚低频脉动。研究结果表明,(1)该指数可有效识别Pc4—Pc5频率范围内的脉动事件(包括瞬态事件),并获得甚低频脉动在时域和频域的重要特征。(2)基于共轭位置地磁脉动的小波分析比较揭示了冬至日、夏至日条件下南北半球甚低频脉动的相似性和差异。本研究也表明,南北半球磁共轭位置观测到地磁脉动存在的差异受到行星际磁场条件、磁场拓扑、观测磁纬度和日照等条件影响,需要进一步研究案例中实际磁层和电离层配置以及驱动条件。 | 徐中华 CRobert Clauer Michael DHartinger Hyomin Kim Daniel R Weimer | 2024 | 极地研究2024，36，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员