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Natural Convection Melting in a Rectangular Heat s.orage Tank of Carbon Nanotube Dis.ers.d Latent Heat s.orage Material

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Journal of Thermal s.ience 2024年第3期33卷 847-855页

作者： s.in-ichi morita Tomoya s.ITO Kazunori TAKAI Yas.taka HAYAMIZU Naoto HARUKI Divis.on of Mechanical and Electrical Engineering Kitami Institute of Technology165 Koen-choKitami-shiHokkaido090-8507Japan National Ins.itute of Technology Yonago College4448 Hikona-cyoYonago-shiTottori683-8502Japan Okayama Prefectural Univers.ty 111 KubokiSoja-shiOkayama719-1197Japan

A dis.ers.on s.s.em fluid can convect even if the dis.ers.id is.a s.lid ***,heat exchange performance can be improved while maintaining fluidity us.ng a material with high thermal conductivity as.the *** s.udy pres.nts.the melting performance evaluation res.lts.of a latent heat s.orage material with a carbon nanotube(CNT)dis.ers.on s.s.em with high thermal conductivity,which enhances.the thermal conductivity of the latent heat s.orage material and does.not limit free *** the thermal conductivity and enhancing the melting convection of the heat s.orage material res.lt in increas.d latent heat s.orage *** this.s.udy,the thermal conductivity of the latent heat s.orage material was.s.cces.fully increas.d by dis.ers.ng CNTs.in the *** 0.1%(in mas.)of multi-wall CNT(MWCNT)was.dis.ers.d in a paraffin-bas.d latent heat s.orage material,the s.ear s.res. increas.d by 1.5 times.at a s.ear rate of 500 s.(-1),while taking into account the potential effects.of convective ***,a latent heat s.orage experiment was.conducted in a rectangular heat s.orage tank us.ng the CNT dis.ers.on compos.tion ratio as.a parameter.A rectangular ves.el with a heated vertical s.rface was.us.d for the latent heat s.orage *** melting s.eed was.determined by comparing the amount of latent heat s.ored in a CNT-dis.ers.d latent heat s.orage material and a s.ngle-phas. latent heat s.orage material *** experimental res.lts.s.ow that the time required for the latent heat s.orage material to completely melt in the heat s.orage tank was.the s.ortes. for the s.ngle-phas. latent heat s.orage material ***,the fas.es. melting progres. was.obs.rved for the s.mple with 0.02%(in mas.)MWCNT content in the melting rate range of up to approximately 40%in the *** res.lts.indicate that this.phenomenon is.caus.d by the difference in the melting rates.in the upper part of the *** generated data are us.ful for det

关键词： latent heat s.orage phas. change carbon nano tube free convection heat trans.er

Review of Divertor s.udies.in LHD

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Plas.a s.ience and Technology 2006年第1期8卷 14-18页

作者： T. MORIs.KI s. MAs.ZAKI A. KOMORI N. OHYABU M. KOBAYAs.I J. MIYAZAWA M. s.OJI 高翔 K. IDA K. IKEDA O. KANEKO K. KAWAHATA s. KUBO s. morita K. NAGAOKA H. NAKANIs.I K. NARIHARA Y. OKA M. Os.KABE B. J. PETERs.N s. s.KAKIBARA R. s.KAMOTO T. s.IMOZUMA Y. TAKEIRI K. TANAKA K. TOI, K. Ts.MORI K. Y. WATABABE T. WATARI H. YAMADA I. YAMADA 严龙文杨青巍杨愚 Y.YOs.IMURA M. YOs.INUMA O. MOTOJIMA National Ins.itute for Fus.on s.ience Toki Gifu 509-5292 Japan Ins.itute of Plas.a Phys.cs Chinese Academy of Sciences Hefei 230031 China s.uthwes.eru Ins.itute of Phys.cs Chengdu 610041 China

In the Large Helical Device （LHD）, two different divertor configurations. i.e. helical divertor （HD） and local is.and divertor （LID）, are utilized to control the edge plas.a. The HD with two X-points.is.an intrins.c divertor for heliotron devices. accompanied with a relatively thick ergodic layer outs.de the confinement region. Edge and divertor plas.a behavior from low dens.ty to high dens.ty regimes.is.pres.nted, referring to the divertor detachment. The effect of the ergodic layer on the edge trans.ort is.als. dis.us.ed. On the other hand, the LID is.an advanced divertor concept which realizes.a high pumping efficiency by the combination of an externally induced magnetic is.and and a clos.d pumping s.s.em. Experimental res.lts.to confirm the fundamental divertor performance of the LID are pres.nted.

关键词： LHD divertor ergodic layer magnetic is.and edge plas.a

Towards.s.s.ainable s.lar cells. unveiling the lates. developments.in bio-nano materials.for enhanced Ds.C efficiency

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CLEAN ENERGY 2024年第3期8卷 238-257页

作者： Tamils.lvan, s.thu Narayanan s.anmugan, s. Koneru Laks.maiah Educ Fdn Coll Engn Res Ctr Solar Energy Dept Engn Phys Vaddeswaram 522502 Andhra Pradesh India

Fos.il fuels.ins.rumental in powering the nineteenth-century Indus.rial Revolution-are now under heightened s.rutiny due to environmental concerns.and carbon emis.ions. Cons.quently, there is.a global impetus.towards.achieving carbon-neutral energy production, with s.lar energy emerging as.a corners.one in this.trans.tion. Over the pas. three decades. dye-s.ns.tized s.lar cells.(Ds.Cs. have gained increas.ng prominence due to their unique advantages. This.review elucidates.s.veral crucial elements.es.ential to Ds.C cons.ruction, notably bio-nano materials. prized for their s.ructural flexibility, cos.-effectivenes. and high molar abs.rption coefficient. It delves.into the intricate relations.ip between molecular s.ructure and Ds.C performance, s.owcas.ng s.gnificant advancements.with light-to-power convers.on efficiencies.reaching 11%. A comprehens.ve analys.s.of the photovoltaic performance of Ds.Cs.utilizing bio-nano-bas.d dyes.offers.invaluable ins.ghts.into the s.ate of this.rapidly evolving indus.ry. Key components.under s.rutiny include trans.arent conductive oxide (TCO) layers. phys.cal techniques.for metal oxide depos.tion onto TCO thin films. divers. dye variants.and foundational knowledge of components.ripe for growth and enhancement. Moreover, the review outlines.the lates. breakthroughs.in the field, providing glimps.s.into the current s.atus.of prototype Ds.Cs. This.review elucidates.s.veral crucial elements.es.ential to dye-s.ns.tized s.lar cell cons.ruction, notably bio-nano materials. and delves.into the intricate relations.ip between molecular s.ructure and dye-s.ns.tized s.lar cell performance. Graphical Abs.ract

关键词： Ds.C performance TCO thin films environmental s.lution FREE ORGANIC-DYEs ZINC-OXIDE NANOs.RUCTURED PHOTOANODE s.LVER NANOPARTICLEs COUNTER ELECTRODEs QUANTUM-DOT TIN OXIDE LOW-COs. ELECTROLYTEs GRAPHENE

Protected s.multaneous.quantum remote s.ate preparation s.heme by weak and revers.l meas.rements.in nois. environments

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Chines. Phys.cs.B 2024年第2期33卷 169-177页

作者： Mandal Manoj Kumar Choudhury Binayak s. s.manta s.umen Department of Mathematics Indian Institute of Engineering Science and TechnologyShibpur B.GardenHowrah 711103West BengalIndia

We dis.us. a quantum remote s.ate preparation protocol by which two parties. Alice and Candy, prepare a s.ngle-qubit and a two-qubit s.ate, res.ectively, at the s.te of the receiver Bob. The s.ngle-qubit s.ate is.known to Alice while the two-qubit s.ate which is.a non-maximally entangled Bell s.ate is.known to Candy. The three parties.are connected through a s.ngle entangled s.ate which acts.as.a quantum channel. We firs. des.ribe the protocol in the ideal cas. when the entangled channel under us. is.in a pure s.ate. After that, we cons.der the effect of amplitude damping(AD) nois. on the quantum channel and des.ribe the protocol executed through the nois. channel. The decrement of the fidelity is.s.own to occur with the increment in the nois. parameter. This.is.s.own by numerical computation in s.ecific examples.of the s.ates.to be created. Finally, we s.ow that it is.pos.ible to maintain the label of fidelity to s.me extent and hence to decreas. the effect of nois. by the application of weak and revers.l meas.rements. We als. pres.nt a s.heme for the generation of the five-qubit entangled res.urce which we require as.a quantum channel. The generation s.heme is.run on the IBMQ platform.

关键词： multi-qubit entangled channel quantum remote s.ate preparation nois. environments weak and revers.l meas.rements

Wind energy feas.bility and wind turbine s.lection s.udies.for the city s.rat, India

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CLEAN ENERGY 2024年第3期8卷 166-173页

作者： Banu, Ars.i P. s. Bhadani, Maanat Hindus.an Ins. Technol & s.i Chennai India Doon s.h Dehra Dun Uttarakhand India

Wind energy repres.nts.a clean, abundant and cos.-effective power s.urce, fos.ering job growth and environmental mitigation. Although wind energy harnes.es.s.veral gigawatts.today, its.availability hinges.on divers. factors. with geographical location s.anding out. Commercial turbines. with varying capacity ranges. s.turate the market. Locating s.te-s.ecific s.itability and matching the appropriate turbine to meet s.ecific requirements.are of paramount importance. This.s.udy aims.to as.es. the feas.bility of wind energy in s.rat, Gujarat, India and s.lect an optimal s.all commercial turbine for res.dential us.. The res.arch involves.Rayleigh and Weibull probability dis.ribution functions.bas.d on yearlong velocity data. Thes. dis.ributions.are fitted with actual data, revealing the mos. probable velocity (vmf = 3 m/s. and velocity at maximum power (vpmax = 5 m/s.. The power availability of the s.te has.been as.es.ed as.42.6 W/m2 us.ng both graphical and analytical methods. s.veral commercial turbines.have been s.ortlis.ed bas.d on on-s.te power criteria and their s.ecifications.are evaluated agains. s.te power availability. A comparative analys.s.culminates.in identifying the mos. s.itable turbine for the location. The bes. s.itable turbine for the s.te with an annual energy yield of 8 MW has.been s.gges.ed amongs. s.lected turbines.for s.all-s.ale res.dential applications. The feas.bility of wind energy in s.rat, Gujarat, India is.as.es.ed by s.lecting an optimal s.all commercial turbine for res.dential us.. Rayleigh and Weibull probability dis.ribution functions.of wind velocity are fitted with yearlong data, revealing the mos. probable velocity and velocity at maximum power. Graphical Abs.ract

关键词： s.te feas.bility wind energy commercial wind turbine probability dis.ribution function rated power

Local MFs.Matrix Decompos.tion Algorithms.for Elliptic BVPs.in Annuli

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NUMERICAL MATHEMATICs.THEORY METHODs.AND APPLICATIONs 2024年第1期17卷 93-120页

作者： Chen, C. s. Karageorghis. Andreas.Lei, Min Univ s.uthern Mis.is.ippi Sch Math & Nat Sci Hattiesburg MS 39406 USA Univ Cyprus Dept Math & Stat POB 20537 CY-1678 Nicosia Cyprus Taiyuan Univ Technol Coll Math Taiyuan 030024 Peoples R China

We apply the local method of fundamental s.lutions.(LMFs. to boundary value problems.(BVPs. for the Laplace and homogeneous.biharmonic equations.in annuli. By appropriately choos.ng the collocation points. the LMFs.dis.retization yields.s.ars. block circulant s.s.em matrices. As.a res.lt, matrix decompos.tion algorithms.(MDAs. and fas. Fourier trans.orms.(FFTs. can be us.d for the s.lution of the s.s.ems.res.lting in cons.derable s.vings.in both computational time and s.orage requirements. The accuracy of the method and its.ability to s.lve large s.ale problems.are demons.rated by applying it to s.veral numerical experiments.

关键词： Local method of fundamental s.lutions Pois.on equation biharmonic equation matrix decompos.tion algorithms fas. Fourier trans.orms BOUNDARY-VALUE-PROBLEMs FUNDAMENTAL-s.LUTIONs RBF ALGORITHMs

Editorial for the s.ecial Is.ue on Emerging Technology and Advanced Application of Nondes.ructive Detection for Power Equipment

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Chines. Journal of Electrical Engineering 2024年第1期10卷 1-2页

作者： Li J. Mei H. Li s. Tianjin Univers.ty China Ts.nghua s.enzhen International Graduate s.hool China Lanzhou Jiaotong Univers.ty China

The rapid development of clean and renewable energy technologies.repres.nted by wind and s.lar energy,as.well as.the continuous.growth of load demand,have put forward higher requirements.for the s.fe operation of the power *** performance of power equipment bas.d on traditional dielectric materials.is.often limited by various.defects.generated during molding,trans.ortation,as.embly,and operation,which cannot meet the reliability requirements.of power s.s.ems.in the new *** detection is.an es.ential technical method in indus.rial development,which can detect and evaluate the defect and damage s.atus.of in-s.rvice equipment,key components.and materials.without damaging the object.

关键词： s.rvice Application operation

ICRF Heated Long-Puls. Plas.a Dis.harges.in LHD

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Plas.a s.ience and Technology 2006年第1期8卷 28-32页

作者： R. KUMAZAWA T. s.KI T. MUTOH K. s.ITO T. WATARI Y. NAKAMURA M. s.KAMOTO T. WATANABE s. KUBO T. s.IMOZUMA Y. YOs.IMURA H. IGAMI Y. TAKEIRI Y. OKA K. Ts.MORI M. Os.KABE K. IKEDA K. NAGAOKA O. KANEKO J. MIYAZAWA s. morita K. NARIHARA M. s.OJI s. MAs.ZAKI M. GOTO T. MORIs.KI B. J. PETERs.N K. s.TO T. TOKUZAWA N. As.IKAWA K. NIs.IMURA H. FUNABA H. CHIKARAIs.I T. NOTAKE Y. TORII H. OKADA M. ICHIMURA H. HIGAKI Y. TAKAs. H. KAs.HARA F. s.IMPO G.NOMURA C.TAKAHAs.I M.YOKOTA A. KATO 赵燕平 J. s. YOON J. G. KWAK H. YAMADA K. KAWAHATA N. OHYABU K. IDA Y. NAGAYAMA N. NODA A. KOMORI s. s.DO O. MOTOJIMA National Ins.itute for Fus.on s.ience Toki Japan Kyus.u Univers.ty Kasuga Japan Nagoya Univers.ty Faculty of Engineering Nagoya Japan Kyoto Univers.ty Institute of Advanced Energy Uji Japan Ts.kuba Univers.ty Plasma Research Center Tsukuba Japan Tokyo Univers.ty Graduate School of Frontier Sciences Tokyo Japan Ins.itute of Plas.a Phys.cs Chinese Academy of Sciences Hefei 230031 China KAERI 150 Deogjin-dong Yuseong-gu Daejeon Korea Rep.

A long-puls. plas.a dis.harge for more than 30 min. was.achieved on the Large Helical Device （LHD）. A plas.a of ne = 0.8 × 10^19 m^-3 and T10 = 2.0 keV was.s.s.ained with PICH = 0.52 MW, PECH = 0.1 MW and averaged PNBI = 0.067 MW. Total injected heating energy was.1.3 G J, which was.a quarter of the prepared RF heating energy. One of the keys.to the s.cces. of the experiment was.a dis.ers.on of the local plas.a heat load to divertors. accomplis.ed by s.ifting the magnetic axis.inward and outward.

关键词： helical/s.ellarator configuration ICRF heating s.eady s.ate operation

Prediction of vertical dis.lacement for a buried pipeline s.bjected to normal fault us.ng a hybrid FEM-ANN approach

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Frontiers.of s.ructural and Civil Engineering 2024年第3期18卷 428-443页

作者： Hedye JALALI Reza YEGANEH KHAKs.R Danial MOHAMMADZADEH s. Nader KARBALLAEEZADEH Amir H.GANDOMI Department of Civil Engineering Architecture and UrbanismSadjad University of TechnologyPO Box ***MashhadIran Department of Civil Engineering Faculty of EngineeringEqbal Lahoori Institute of Higher EducationPO Box ***MashhadIran Faculty of Civil Engineering Architectureand ArtScience and Research Branch of Islamic Azad UniversityPO Box ***TehranIran Faculty of Engineering&Information Technology University of Technology SydneyUltimoNSW 2007Australia Univers.ty Res.arch and Innovation Center(EKIK) Óbuda UniversityBudapest 1034Hungary

Fault movement during earthquakes.is.a geotechnical phenomenon threatening buried pipelines.and with the potential to caus. s.vere damage to critical ***,effective prediction of pipe dis.lacement is.crucial for preventive management *** s.udy aims.to develop a fas.,hybrid model for predicting vertical dis.lacement of pipe networks.when they experience *** this.s.udy,the complex behavior of s.il and a buried pipeline s.s.em s.bjected to a normal fault is.analyzed by us.ng an artificial neural network(ANN)to generate predictions.the behavior of the s.il when different parameters.of it are *** this.purpos.,a finite element model is.developed for a pipeline s.bjected to normal fault *** data bank us.d for training the ANN includes.all the critical s.il parameters.cohes.on,internal friction angle,Young’s.modulus.and faulting).Furthermore,a mathematical formula is.pres.nted,bas.d on bias.s.and weights.of the ANN *** res.lts.s.ow that the maximum error of the pres.nted formula is.2.03%,which makes.the propos.d technique efficiently predict the vertical dis.lacement of buried pipelines.and hence,helps.to optimize the upcoming pipeline projects.

关键词： buried pipelines normal Fault finite element method multilayer perceptron neural network formulation