Search Results:　 1-20 of 979

1

Flow Behavior and Heat Transfer Characteristics of Ice Slurry along a Heated Cylinder [in Japanese]

富樫憲一 , 川南剛 , 麓耕二他

Thermal Science and Engineering 21(1), 21-29, 2013-01-00
2

Validation of Accuracy of CFD for Natural Convection Flow in Floor Heating Room : Part 1-Temperature Measurement of an Actual-Size Model [in Japanese]

ONO Hiroki , SAKAI Koji , KAJIYA Ryoichi , AOKI Ryoichi

CFDは低コストかつ柔軟性の高い温熱環境解析手法として注目を集めている。近年,実測結果とCFDによる計算結果を比較し,様々な流れ場においてCFDの妥当性を検証する研究は数多く行われているが,多くは強制対流場を対象としたものであり,自然対流場に関する妥当性の検証は,実際の建築空間に比べて非常に小さな簡易模型によるものがほとんどである。そこで本研究では,小型の実大床暖房室模型を製作し,床暖房時の室内温 …

空気調和・衛生工学会論文集 (178), 21-27, 2012-01-05

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3

Numerical Simulation of Non-Equilibrium Conjugate Heat Transfer in Tubes Partially Filled with Metallic Foams

QU Zhiguo , XU Huijin , TAO Wenquan

… Numerical simulation with the Forchheimer flow model and local thermal non-equilibrium model for porous region is performed on forced convective heat transfer in a tube partially filled with metallic foams. … The numerical work is not only developed for forced convection in metal-foam partially filled tube, but can also be extended to similar problem with porous-fluid interface for other porous media with significant thermal non-equilibrium effect. …

Journal of Thermal Science and Technology 7(1), 151-165, 2012

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4

Internal and External Flow Structure and Mass Transport Phenomena of an Acoustically Levitated Droplet [in Japanese]

石井光 , 長谷川浩司 , 金子暁子 , ABE Yutaka

… The experimental value of the evaporation process was quantitatively good agreement with the theoretical prediction that considers the forced convection. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 78(794), 1696-1709, 2012

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5

Effects of Microbubble Injection on Natural Convection Heat Transfer from a Vertical Heated Plate [in Japanese]

KITAGAWA Atsuhide , 山本和明 , 村井祐一

… This paper describes effects of microbubble injection on natural convection heat transfer from a vertical heated plate in water. … The heat transfer enhancement in the laminar region results from both the forced-convection and mixing effects due to microbubble injection. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 78(793), 1539-1549, 2012

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6

Time-Dependent Solidification in Laminar Water Flows in a Square Duct (The Second Report : Ice Growth Response to Velocity Modulation) [in Japanese]

YAMAMOTO Hirotami , 木村繁男 , 木綿隆弘 , 小松信義

… Numerical and experimental studies on forced convection heat transfer and freezing in a vertical duct with asymmetric side-wall cooling at a subzero temperature have been conducted. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 78(792), 1397-1408, 2012

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7

Simulation of Thermal Convection Based on Preconditioning Method and BCM [in Japanese]

FURUSAWA Takashi , 牧野幸太郎 , YAMAMOTO Satoru , 中橋和博

… First, forced and natural convections around a cylinder are calculated and the results are compared with the experiments and the previous numerical results to validate the calculated results. … Second, natural convection around a fin-shaped body is calculated and the availability of this method to practical problems involving a thermal convective flow is discussed. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 78(788), 745-752, 2012

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8

Fluid Flow and Heat Transfer of Combined Convection over Upward-Facing, Horizontal Circular Disks Placed in Vertical Downward Flow

MITSUISHI Akihiko , MISUMI Toshiyuki , KITAMURA Kenzo

… Experimental investigations have been carried out on combined convective flows over upward-facing, circular heated disks placed in a vertical downward flow of forced convection. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 78(785), 95-106, 2012

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9

Fluid Flow and Heat Transfer of Opposing Mixed Convection around Rectangular Cylinder Placed in Uniform Downward Flow of Forced Convection

KITAMURA Kenzo , KIOI Akira , MITSUISHI Akihiko , KIMURA Fumiyoshi

… This yields higher overall Nusselt numbers than those of the forced convections. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 78(785), 83-94, 2012

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10

Boiling Feature of Forced Convection of Ammonia on Plate Evaporator [in Japanese]

Mishima Fumiya , Arima Hirofumi , Koyama Kohei , Okamoto Akio , Ikegami Yasuyuki

OTEC 16, 19-31, 2011-09-00

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11

41054 Effects of outdoor thermal environment on the human body within his wheel chair : Part 6 Measurement of radiative and convective heat transfer of the human body with his wheel chair under the forced convection [in Japanese]

NAGATA Taiyo , TSUCHIKAWA Tadahiro , HORI Shinsuke , KURAZUMI Yoshihito , YAMATO Yoshiaki , MATSUBARA Naoki , HORIKOSHI Tetsumi

Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D-2, Environmental engineering II, Heat, moisture, thermal comfort, natural energy, air flow, ventilation, smoke exhaustion, computational fluid dynamics, indoor air quality heating, cooling and air-conditioning heat and cold sources, piping systems application of building services 2011, 107-108, 2011-07-20

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12

Flow and thermal resistance network analysis of airflow and heat transfer in a thin electronic equipment enclosure with a localized finned heat sink

福江高志 , 石塚勝 , 山崎健太他

Thermal Science and Engineering 19(3), 81-93, 2011-07-00
13

Corrosion Characteristics of Hydrogen Permeation Materials in Molten Salt Flinak

NAGASAKA Takuya , KONDO Masatoshi , SAGARA Akio , MUROGA Takeo

… Corrosion characteristics of hydrogen-permeation materials (e.g., Pd-Ag, pure V, Nb, and Ta) are examined in molten salt Flinak, in order to develop a hydrogen-recovery section for a Flinak forced convection loop "Operational Recovery of Separated Hydrogen and Heat Inquiry -1 (Orosh2 i-1)." It is determined that their corrosion rate is not significant at 873 K under static conditions, compared with that of JLF-1 ferritic steel. …

Plasma and Fusion Research 6, 1405146-1405146, 2011

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14

Fluid Flow and Heat Transfer of Combined Forced and Natural Convection Adjacent to Upward-Facing, Heated Inclined Plate

KITAMURA Kenzo , MISUMI Toshiyuki , MITSUISHI Akihiko

… The aiding flows showed higher coefficients than those of the forced convection, while the lower coefficients were obtained near the separation points of the opposing flows. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 77(779), 1578-1591, 2011

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15

Modeling and Simulation of Double-Pass Parallel-Plate Mass Exchangers under Asymmetric Wall Concentrations

Ho Chii-Dong , Kuo Chi-Chin , Chang Cheng-Liang , Chen Yih-Hang , Tu Jr-Wei

… A mathematical model was formulated theoretically for such double-pass forced-convection mass exchangers, as referred to conjugated Graetz problems. …

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 44(12), 919-930, 2011

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16

Calculation Method and Application of Contribution Ratio of Indoor Climate (CRI) by Means of Setting a Uniform Heat Sink in Natural Convection Air Flow Field [in Japanese]

ZHANG Weirong , KATO Shinsuke , HIYAMA Kyosuke , ISHIDA Yoshihiro

本研究では，室内温熱環境形成寄与率CRIを用いて自然対流が支配する室内の温熱環境を評価することを目的として，自然対流場における個々の発熱源に対し，その発熱量に対応した一様分布吸熱源を設定したCRIの計算法を提案する．そして，自然対流や放射が卓越するアトリウムを対象としたCFD解析を行い，新たな計算法で各熱源のCRIを計算する．また，熱的要因の対流成分に対する室内温熱環境形成寄与率CRI，および熱的 …

SEISAN KENKYU 63(1), 13-21, 2011

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17

Heat Transfer Coefficient in Flow Convection of Pipe-Cooling System in Massive Concrete

Yang Joo-Kyoung , Lee Yun , Kim Jin-Keun

… In this paper, a device measuring the heat transfer coefficient is developed based on the concept of internal forced convection. … The main influencing factors on the heat transfer coefficient in the flow convection are the flow velocity, pipe diameter and thickness, and the pipe material. …

Journal of Advanced Concrete Technology 9(1), 103-114, 2011

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18

120 Multi-Purpose Shape Optimization in Forced Heat-convection Fields [in Japanese]

KATAMINE Eiji , KANI Tomokuni

… This paper presents a numerical solution to multipurpose shape optimization problems of steady heat-convection fields. … In previous study, it has been dealt with a shape optimization problem for total dissipation energy minimization in the domain of a viscous flow field and a shape determination problem of temperature distribution prescribed problem in sub-domains of heat-convection fields. …

最適化シンポジウム講演論文集 2010(9), "120-1"-"120-6", 2010-12-09

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19

Effects of Hypergravity on Formation of Microporous Films by Dissipative Processes

Yabu Hiroshi , Hirai Yuji , Shimomura Masatsugu , Natsuisaka Makoto , Tsujii Kaoru

… From the hypergravity experiment, the thermal convection during solvent evaporation was forced to be enhanced under hypergravity. …

Jpn J Appl Phys 49(11), 110210-110210-3, 2010-11-25

The Japan Society of Applied Physics
20

Study on Air Forced Convection Cooling Performance on a High Heat Density Board Model in a Thin Enclosure(Thermal Engineering) [in Japanese]

FUKUE Takashi , ISHIZUKA Masaru , NAKAGAWA Shinji , HATAKEYAMA Tomoyuki , SHIMOUCHI Tomoya , NAKAYAMA Wataru

… On the other hand, natural convection and radiation from the enclosure also have an important effect to heat release in the high-density packaging device. … However, by the effect of forced convection cooling, temperature rise of components is decreased of 20℃ as compared to the result without air flow. … Therefore, local forced convection by the narrow duct is effective for the heat release from the high-packaging density device. …

Transactions of the Japan Society of Mechanical Engineers. B 76(771), 1884-1892, 2010-11-25

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