Search Results:　 1-20 of 821

1

Study of NH_4HS Concentrating Mechanism in Air Cooled Heat Exchanger Tubes [in Japanese]

TOBA Kazuhiro , KAWANO Koji , TANAKA Kotaro , IWAWAKI Hirohito , SAKAI Jun'ichi

Zairyo-to-kankyo 60(6), 304-311, 2011-06-15

References (8)
2

Molecular Design of High-Performance Fullerene Materials: A Theoretical Study on Hole-Transport Property of Fullerene Hydride C70H2

Tokunaga Ken , Ohmori Shigekazu , Kawabata Hiroshi

… Firstly, for the analysis of the carrier-transfer mechanism between C70H2 molecules, the geometrical difference between C70H2 and C70H2+, the natural population analysis (NPA) charge, and the electron spin resonance (ESR) parameters (spin density) of C70H2+ are calculated by density functional theory [B3LYP/6-311G(d,p)]. …

Jpn J Appl Phys 50(1), 01BA03-01BA03-5, 2011-01-25

The Japan Society of Applied Physics
3

Nanoscale Heat Transfer Mechanism in Near-Field Optical Heating Measurements [in Japanese]

SAIKI Toshiharu

Journal of the Heat Transfar Society of Japan 50(210), 1-5, 2011-01-01

References (6)
4

Heat Transfer Enhancement Using a Pin Fin Heat Sink Filled with Metal Foams

ANDO Kenji , IMAI Yusuke , HIRAI Hidekazu , NAKAYAMA Akira

… The recent development of information technologies due to advent of a new generation of semiconductor devices has brought us serious problems associated with high heat generation density. … Conventional cooling methods such as fin heat sinks with blowing fans may not be sufficient to solve such serious heat related problems. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 77(782), 1958-1967, 2011

J-STAGE CrossRef
5

The Effect of Metallic Iron Particle on Coke-Matrix after Coke CO2 Gasification Reaction

YAMAZAKI Yoshiaki , HIRAKI Kenichi , KANAI Tetsuya , ZHANG Xiaoqing , MATSUSHITA Yohsuke , SHOJI Masakazu , AOKI Hideyuki , MIURA Takatoshi

… It is also suggested that this reaction mechanism maintains elastic modulus of coke-matrix because of the local rapid gasification reaction around the iron particle. …

Journal of Thermal Science and Technology 6(2), 278-288, 2011

J-STAGE CrossRef
6

Effects of the Nanostructural Geometry at a Liquid-Solid Interface on the Interfacial Thermal Resistance and the Liquid Molecular Non-Equilibrium Behaviors

SHIBAHARA Masahiko , OHARA Taku

… The effects of the structural geometry at the nanometer scale on the thermal resistance at a liquid molecule-solid interface, as well as the interfacial energy transport mechanism of liquid molecules, were investigated directly by the nonequilibrium classical molecular dynamics simulations. … The liquid-solid interfacial thermal resistance reduction in the case of nanostructure surface relates to the energy transport mechanism change at the liquid-solid interface and the surface area magnification. …

Journal of Thermal Science and Technology 6(2), 247-255, 2011

J-STAGE CrossRef
7

Ion-Molecule Reactions of CH5+, C2H5+, and C3H5+ with Halogenated Benzenes in an Ion-Trap Type of a Mass Spectrometer

ARIKAWA Takeshi , TSUJI Masaharu

… The major product channel involves dissociative and non-dissociative proton transfer leading to [M+H-HX+CH4]+=[PhCH3+H]+ for PhF, [M+H]+ for PhCl and PhBr, and [M+H-X]+=PhH+ for PhI. … The reaction mechanism is discussed based on the reaction-time dependence of product-ion distributions and semi-empirical calculations of the heat of reaction for each process. …

Journal of the Mass Spectrometry Society of Japan 59(4), 69-78, 2011

J-STAGE CrossRef
8

A Numerical Study on Effects of Electrode Gap and Heat Loss on Flame Kernel Formation in Spark Ignition Process for Methane/Air Mixtures

NAKAYA Shinji , TSUE Mitsuhiro , KONO Michikata , SEGAWA Daisuke , KADOTA Toshikazu

… A detail reaction mechanism of methane and a detail transport mechanism including thermal diffusion were taken into account in the numerical model. … The effect of the heat loss to the electrode was investigated for the several condition of the electrode surface. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 77(773), 177-185, 2011

J-STAGE
9

Numerical Analysis for Heat Transfer Enhancement in a Laminar Natural-Convection Boundary Layer by Inserting Short Flat Plates Set in Array

KAJITA Yasushi , TSUJI Toshihiro , MATSUNO Tadasuke

… Heat transfer enhancement for a laminar natural-convection boundary layer along a vertical flat plate by inserting short flat plates set in array at fixed intervals (split heat transfer promoter) has been numerically analyzed to comprehend the mechanism originating the increase in heat transfer rates. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 77(773), 120-128, 2011

J-STAGE
10

High-Temperature Sodium Hydroxide Impinging Experiment for Investigating Tube Wastage Phenomena Caused by Sodium-Water Reaction in FBR Steam Generator

KURIHARA Akikazu , OHSHIMA Hiroyuki , SHIMOYAMA Kazuhito , UMEDA Ryota

… Sodium reacts chemically with water in case of unexpected heat transfer tube failure in a steam generator (SG) of sodium-cooled fast breeder reactors (FBRs) and exothermic reaction produces reaction field with high temperature and high corrosive action (sodium-water reaction). …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 77(776), 964-968, 2011

J-STAGE
11

Influence Assessment of Supply Gas Condition and Separator Structure on In-Plane Temperature Distribution and Power Generation Performance of Single Cell of PEFC

NISHIMURA Akira , TANAKA Shigeki , MORIMOTO Atsushi , OSHIMA Atushi , HIROTA Masafumi , NARITA Masahiko

… To clarify the mechanism of coupling phenomena such as heat, mass and electric charge transfer in a single-cell polymer electrolyte fuel cell (PEFC), we have measured in-plane temperature distribution in a single-cell PEFC by thermograph under power generation. … This is caused by the convention heat transfer by excess oxygen flow in gas channel at the cathode. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 77(776), 934-938, 2011

J-STAGE
12

Noise Reduction and Rapid Heat Storage for Vacuumed Electric Water Heater Using Main and Sub Heaters (Optimum Tune-Up Condition and Efficiency Assessment of Heat Storage Operation)

MURAKAMI Yoshihiro , UCHIYAMA Hironobu , KURATA Junichi

… Vacuumed electric water heater is useful for heat storage. … However, it is still required to reduce its noise at boiling and to add the function of rapid heat storage. … We investigated the process of bubble generation and its collapse in relation to the noise reduction mechanism with main and sub heaters used. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 77(776), 1260-1271, 2011

J-STAGE CrossRef
13

Air Jet Assisted Machining of Titanium Alloy

OBIKAWA Toshiyuki , FUNAI Kazuhiro , KAMATA Yasuhiro

… Finally, cooling mechanism in AJA machining was discussed from a viewpoint of enhancement of the heat transfer coefficient from the cutting tool to the cutting fluid. …

Journal of Advanced Mechanical Design, Systems, and Manufacturing 5(2), 139-149, 2011

J-STAGE CrossRef
14

Heat Induced Separation in Upward Impinging Jet Flows : Experimental Verification and Underlying Mechanism

SHEKHAR Chandra , NISHINO Koichi

… The region after the separation point turns into a dead zone where the heat transfer deteriorates. … It severely undermines the overall heat-transfer efficiency of the jet. … Its mechanism is also discussed in detail. …

Journal of Thermal Science and Technology 6(1), 93-110, 2011

J-STAGE CrossRef
15

Numerical Analysis for Film Boiling Heat Transfer of a Moving Hot Steel Plate

Park Il Seouk

… The basic phenomenon governing this cooling process is the boiling heat transfer. … The boiling phenomenon is one of the most well-understood heat transfer mechanism by the past a few decades research. … This paper focuses on the boiling heat transfer on the moving hot plate with a fully numerical approach. …

ISIJ International 51(5), 743-747, 2011

J-STAGE CrossRef
16

In-Situ Measurement of In-Plane Temperature Distribution in a Single-Cell Polymer Electrolyte Fuel Cell Using Thermograph : (1st Report: Impacts of Gas Flow Rate at Inlet and Gas Channel Pitch of Separator on In-Plane Temperature Distribution and Power Generation Performance)

NISHIMURA Akira , SHIBUYA Kenichi , MORIMOTO Atsushi , TANAKA Shigeki , HIROTA Masafumi , NAKAMURA Yoshihiro , KOJIMA Masashi , NARITA Masahiko

… To clarify the mechanism of combined phenomena of heat, mass and electric charge transfers in a single-cell polymer electrolyte fuel cell (PEFC), it is necessary to measure in-plane temperature distribution of a single-cell PEFC when it is run, i.e., generating power. … As a result, the higher temperature region is observed near the outlet of cell when the excess ratio of gas flow is set due to the convective heat transfer by excess oxygen flow in gas channel at the cathode. …

Journal of Environment and Engineering 6(1), 1-16, 2011

J-STAGE CrossRef
17

On Heat Transfer Mechanism of Nucleate Boiling with MEMS Sensors : 3rd Report, Evaluation of the Approach Method and Heat Transfer Characteristics of Isolated Boiling Bubble(Thermal Engineering) [in Japanese]

YABUKI Tomohide , NAKABEPPU Osamu

… This paper describes a novel approach method to the heat transfer mechanism beneath isolated bubble during nucleate boiling with MEMS (Micro-Electro-Mechanical Systems) sensors. … The heat transfer due to the bubble growth process was numerically evaluated by two-dimensional transient heat conduction simulation with the measured data as a boundary condition. …

Transactions of the Japan Society of Mechanical Engineers. B 76(771), 1932-1941, 2010-11-25

CiNii Fulltext PDF - Open Access References (12)
18

G223 Numerical analysis for heat transfer enhancement of a laminar natural-convection boundary layer with plates set in array [in Japanese]

Kajita Yasushi , Tsuji Toshihiro

… Heat transfer enhancement for a laminar natural-convection boundary layer along a vertical flat plate with short flat plates standing in line at fixed intervals (split heat transfer promoter) has been numerically analyzed to comprehend the mechanism originating the increase in heat transfer rates. …

Procee[d]ings of Thermal Engineering Conference 2010, 369-370, 2010-10-29

CiNii Fulltext PDF - Subscription
19

A232 A bioheat equation accounting for countercurrent blood flows in arterial and venous vessels [in Japanese]

Sano Yoshihiko , Yoshikawa Kentaro , Nakayama Akira

… A general bioheat equation for local tissue heat transfer has been derived exploiting a volume averaging theory. … The resulting energy equation turns out to be remarkably simple as we define the effective thermal conductivity tensor, which accounts for the countercurrent heat exchange mechanism. …

Procee[d]ings of Thermal Engineering Conference 2010, 249-250, 2010-10-29

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20

H131 Study on Heat Transfer Mechanism of Isolated Bubble Nucleate Boiling of Water [in Japanese]

Yabuki Tomohide , Nakabeppu Osamu

… The mechanism of isolated bubble pool nucleate boiling of water is studied by a novel approach method using the developed MEMS thermal sensor. … Heat transfer from the heating surface and the superheated liquid layer was evaluated by the heat transfer simulation with the experimental results. …

Procee[d]ings of Thermal Engineering Conference 2010, 223-224, 2010-10-29

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