Search Results:　 1-20 of 34

1

High Cycle Thermal Fatigue Crack Initiation and Growth Behavior in a Simulated BWR Environment

HAYASHI Makoto , HIRANO Akihiko

… At a tee junction point in a piping system, hot and cold water are mixed with each other in a whirl. … The vibrating mixing boundary between the hot and cold water causes a temperature fluctuation on an inside surface of the pipe just after the connection point. …

Journal of Solid Mechanics and Materials Engineering 6(10), 989-1001, 2012

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2

1010 Development of Sophisticated Method for Thermal Fatigue Prevention : (2) Benchmark simulation of temperature fluctuation using CFD for the evaluation of the thermal load [in Japanese]

NAKAMURA Akira , QIAN Shaoxiang , TANAKA Masa-aki , KASAHARA Naoto

… Thermal fatigue crack may initiate at mixing tee where high and low temperature fluids flow in and mix. … This paper shows some results of numerical simulations that were conducted to evaluate temperature fluctuation in mixing tee using some turbulence models. …

M&M材料力学カンファレンス 2010, 1205-1207, 2010-10-09

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3

Development of Novel Micro Swirl Mixer for Producing Fine Metal Oxide Nanoparticles by Continuous Supercritical Hydrothermal Method

Kawasaki Shin-ichiro , Sue Kiwamu , Ookawara Ryuto , Wakashima Yuichiro , Suzuki Akira

… Novel micro swirl mixers were developed to synthesize nanoparticles, and the effect of their mixing performance on the characteristics of the synthesized nanoparticles was determined. … The synthesis of NiO, whose characteristics depend on the mixing performance of the mixer, was chosen as a model reaction. …

Journal of Oleo Science 59(10), 557-562, 2010

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4

Thermal and Hydraulic Characteristics in a Mixing Tee Pipe with Fluid Temperature Fluctuation

重田明広 , 中森圭那絵 , 千田衞 , 稲岡恭二 , シゲタアキヒロ , ナカモリカナエ , センダマモル , イナオカキョウジ , Shigeta Akihiro , Nakamori Kanae , Senda Mamoru , Inaoka Kyoji

… In a region of mixing tee pipe where hot and cold fluids are mixed together, temperature fluctuation occurs due to the unstable mixing process of the fluids and the structural materials might be damaged by high-cycle thermal fatigue. … The present study carried out the experiments in the mixing tee with fluid temperature fluctuation on flow visualization, measurement of fluid temperature and heat transfer using a micro heat flux sensor. …

同志社大学理工学研究報告 49(2), [127]-133, 2008-07-31

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5

Thermal and hydraulic characteristics in a mixing tee pipe with fluid temperature fluctuation [in Japanese]

重田明広 , 中森圭那絵 , 千田衞他

The Science and engineering review of Doshisha University 49(2), 127-133, 2008-07-00
6

819 Thermal and Hydraulic Characteristics in a Mixing Tee Pipe with Fluid Temperature Fluctuation [in Japanese]

SHIGETA Akihiro , NAKAMORI Kanae , SENDA Mamoru , INAOKA Kyoji

関西支部講演会講演論文集 2008(83), "8-24", 2008-03-14

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7

Flow and Mixing Characteristics in Counter-Type T-junction : Influence of Flow Ratio on Mixing Characteristics(Fluid Engineering) [in Japanese]

NAKAYAMA Hiroshi , HIROTA Masafumi , SHINODA Kazuhiro , KOIDE Sayaka

… The effects of flow rate ratio on flow and mixing characteristics for turbulent flow in a counter-type T-junction channel have been investigated experimentally. … The T-junction was modeled by a mixing tee with square cross sections, in which the mixing channel was connected with the main and counter channels at right angles. …

Transactions of the Japan Society of Mechanical Engineers. B 73(733), 1813-1820, 2007-09-25

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8

Development of a New Swirling Micro Mixer for Continuous Hydrothermal Synthesis of Nano-Size Particles

WAKASHIMA Yuichiro , SUZUKI Akira , KAWASAKI Shin-ichiro , MATSUI Keitaro , HAKUTA Yukiya

… In hydrothermal synthesis of nano-size particles, in which an aqueous metal salt solution at a normal temperature and supercritical water are directly mixed, the mixing process of the two fluids is extremely crucial for obtaining a highly supersaturated crystallization field and growth process control of fine metal oxides. … This paper reports on a newly developed swirling micro mixer as a replacement of a conventional mixing tee-union for improved mixing of the two fluids. …

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 40(8), 622-629, 2007-08-01

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9

Vortex Method and Particle Trajectory Tracking Method for Liquid-Solid Two-Phase Simulation in a Mixing Tee with Experimental Validation [in Japanese]

ISO Yoshiyuki , KAMEMOTO Kyoji

… In this study, internal liquid-solid two-phase flows in a mixing tee had been analyzed by the new method, in which use of the vortex introduction model enables the simulation of the dynamic behavior of separation or reattachment. …

Transactions of the Japan Society of Mechanical Engineers. B 72(720), 1880-1887, 2006-08-25

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10

A New On-line Sample Preparation System for the Liquid Chromatography/Time-of-Flight Mass Spectrometry Simultaneous Analysis of Pesticides in River Water

SASAKI Hideki , YONEKUBO Jun , HAYAKAWA Kazuichi

… The system consists of an eluting pump, a mixing TEE connector, a 10-port 2-position valve and a solid-phase extraction precolumn. … The eluate from the precolumn is diluted with a weak solvent from the HPLC at the TEE connection to load low hydrophobic compounds onto the analytical column. …

Analytical Sciences 22(6), 835-840, 2006-06-10

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11

Flow and Mixing Characteristics in Counter-Type T-Junction : Influence of Flow Ratio on Fluid Characteristics [in Japanese]

NAKAYAMA Hiroshi , HIROTA Masafumi , SHINODA Kazuhiro , KOIDE Sayaka

… The T-junction was modeled by a mixing tee with square cross sections, in which the mixing channel was connected with the main and counter channels at right angles. … To identify the coherent flow structures, the proper orthogonal decomposition (POD) analysis was applied to the fluctuating velocity field in the mixing channel. …

Transactions of the Japan Society of Mechanical Engineers. B 72(714), 337-344, 2006-02-25

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12

407 Numerical Simulation and Experimental Validation of Liquid-Solid Two-Phase Flow in a Mixing Tee by Vortex Method and Particle Trajectory Tracking Method [in Japanese]

ISO Yoshiyuki , KAMEMOTO Kyoji

… In this study, internal liquid-solid two-phase flows in a mixing tee had been analyzed by the new method, in which use of vortex introduction model enables us to simulate dynamic behaviors of separation or reattachment vortices. … We simulated and measured particle motions, such as deposition or particle-wall collision, which change according to confluent flow rate ratio in a mixing tee. …

年次大会講演論文集 : JSME annual meeting 2005(7), 21-22, 2005-09-18

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13

AM05-14-006 Turbulent mixing mechanism in the counter type T-junction [in Japanese]

Nakayama Hiroshi , Hirota Masafumi , Koide Sayaka

… We investigated experimentally the turbulent mixing characteristics in a counter-type T-junction. … The T-junction was modeled by a mixing tee with square cross sections, in which the mixing channel was connected with the main and counter channels at right angles. … Due to the large longitudinal vortices formed in the mixing channel, the recirculation bubble has three-dimensional structures. …

Proceedings, ... meeting of Japan Society of Fluid Mechanics 2005, 184, 2005-09-05

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14

高サイクル熱疲労の熱流動現象に関する研究--T管及び平行三噴流体系の温度変動 [in Japanese]

上出英樹 , 五十嵐実 , 木村暢之他

サイクル機構技報 (27), 41-53, 2005-06-00
15

Study on Temperature Fluctuation Characteristics for High Cycle Thermal Fatigue in a Mixing Tee [in Japanese]

IGARASHI Minoru , KAMIDE Hideki , TANAKA Masaaki , KIMURA Nobuyuki

… A water experiment for thermal hydraulics in a mixing tee was performed to investigate thermal striping phenomena. …

Transactions of the Japan Society of Mechanical Engineers. B 70(700), 3150-3157, 2004-12-25

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16

Fluid mixing characteristics in a counter-type T-junction flow [in Japanese]

NAKAYAMA Hiroshi , HIROTA Masafumi , SHINODA Kazuhiro , KOIDE Sayaka

… Flow and mixing characteristics for turbulent flow in a counter-type T-junction channel have been examined experimentally. … The T-junction was modeled by a mixing tee with square cross sections, in which the mixing channel was connected with the main and counter channels at right angles. … Detail distributions of velocity and concentration after the mixing have been measured using PFV and LIF, respectively. …

Procee[d]ings of Thermal Engineering Conference 2004, 405-406, 2004-11-10

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17

Thermal Striping Tests in Mixing Tees with Same Pipe Diameters : 2nd Report, Characteristics of Heat Transfer of Temperature Fluctuations [in Japanese]

KAWAMURA Tsutomu , SHIINA Kouji , OHTSUKA Masaya , MIZUNO Tadashi , KUROSAKI Michiaki , OGURA Kenji , TANIMOTO Kouichi , FUKUDA Toshihiko , MINAMI Yasuhiko , MORIYA Shoichi , MADARAME Haruki

… Thermal striping tests in mixing tees with same pipe diameters were conducted in order to construct databases for entablishment of an evaluation method for high-cycle thermal fatigue of piping systems. … Hot and cold water with a terperature difference of 40 degrees Kelvin were supplied to the mixing tee. …

Transactions of the Japan Society of Mechanical Engineers. B 70(696), 2083-2088, 2004-08-25

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18

238 Large Eddy Simulation of a Mixing Tee Junction, Wall Jet type configuration

EMONOT Philippe , YAMAGUCHI Akira , KAMIDE Hideki , IGARASHI Minoru

… In the context of a collaboration between JNC and CEA, we focus on turbulent thermal hydraulic flows in mixing tee geometries which are widely used in nuclear technology. … As a first stage, a mixing tee configuration with small buoyancy force and a main pipe velocity 1.46 times higher than the branch pipe one has been selected. …

The Computational Mechanics Conference 2003(16), 165-166, 2003-11-22

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19

High Cycle Thermal Fatigue Crack Initiation and Growth Behavior in Simulated BWR Environment [in Japanese]

HAYASHI Makoto , HIRANO Akihiko

… At a tee junction point of piping system, hot water and cold water is mixed with each other in a whirl. … The vibrating mixing boundary between the hot and cold water causes a temperature fluctuation on an inside surface of the pipe just after the connection point. …

Transactions of the Japan Society of Mechanical Engineers. A 69(685), 1353-1359, 2003-09-25

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20

Study on High Cycle Thermal Fatigue of FBR plants(2) Water experiment for mixing phenomena in T-pipe junction [in Japanese]

IGARASHI Minoru , TANAKA Masaaki , KIMURA Nobuyuki , KAMIDE Hideki

… A water experiment for thermal hydraulics in a mixing tee was performed to investigate thermal striping phenomena. … From the temperature measurement test, the spatial distribution of temperature fluctuation near the wall depended on this flow pattern in the tee. …

年次大会講演論文集 : JSME annual meeting 2003(3), 207-208, 2003-08-05

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Search Results:　 1-20 of 34