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Numerical Simulation of Sand Erosion Phenomena in Rotor/Stator Interaction of Compressor

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Journal of Thermal Science 2008年第2期17卷 125-133页

作者： Masaya Suzuki Kazuaki inaba Makoto Yamamoto Department of Mechanical Engineering Tokyo University of Science

沙侵蚀是侵犯到一面墙的稳固的粒子引起严重机械损坏到墙表面的现象。这现象是典型煤气粒子的二阶段的狂暴的流动和流动地，粒子轨道和墙变丑与对方一起交往的一个多物理问题。在另一方面，在微粒环境操作的飞机引擎由于沙侵蚀受到表演... 详细信息

沙侵蚀是侵犯到一面墙的稳固的粒子引起严重机械损坏到墙表面的现象。这现象是典型煤气粒子的二阶段的狂暴的流动和流动地，粒子轨道和墙变丑与对方一起交往的一个多物理问题。在另一方面，在微粒环境操作的飞机引擎由于沙侵蚀受到表演和一生恶化。特别，飞机引擎的压缩机严重地被损坏。压缩机的流动地强烈有三个维、不稳定的性质。以便由于沙侵蚀估计恶化，为一台压缩机的沙侵蚀模拟在转子定子相互作用的考虑下面被要求。在现在的学习，我们把我们的三维的沙侵蚀预言代码用于一台单个阶段轴流压缩机。我们数字地在压缩机调查流动领域，粒子轨道，和侵蚀的墙形状的变化，到在压缩机澄清沙侵蚀的效果。

关键词：砂侵蚀轴承压缩机动力学

3D Computation of hydrogen-Fueled Combustion around Turbine Blade-Effect of Arrangement of Injector holes

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Journal of Thermal Science 2006年第3期15卷 233-239页

作者： Makoto YAMAMOTO Junichi IKEDA Kazuaki inaba Department of Mechanical Engineering Tokyo University of Science 1-3 KagurazakaShinjuku-kuTokyo162-8601Japan Graduate School of Mechanical Engineering Tokyo University of Science 1-3 KagurazakaShinjuku-kuTokyo162-8601Japan

最近，从石块燃料燃烧引起的很多个环境问题上被集中了。与石块精力资源的最终的弄空，另外，氢气体被期望在不久的将来是一个其他的精力资源。它被高精力每统一重量描绘，高反应率，宽范围易燃并且低排放性质。在另一方面，许多研究在... 详细信息

最近，从石块燃料燃烧引起的很多个环境问题上被集中了。与石块精力资源的最终的弄空，另外，氢气体被期望在不久的将来是一个其他的精力资源。它被高精力每统一重量描绘，高反应率，宽范围易燃并且低排放性质。在另一方面，许多研究在几个国家是在进行之中的为一架先进飞机改进一个推进系统。系统被要求比存在的有更高的力量，更轻的重量和更低的排出物。在如此的一个未来推进系统，氢气体将是为认识到要求的有希望的燃料之一。就这些背景而言，我们的组为造成氢的飞机推进系统建议了一个新周期概念。在现在的学习，我们在汽轮机片附近与造成氢的燃烧执行狂暴的流动领域的 3 维的计算。主要目的是澄清氢注射者洞的安排的影响。改变洞，流动的 3 维的性质和热领域的 chordwise 和 spanwise 间距数字地被学习。

关键词：计算流体动力学涡轮叶片氢燃烧注射空穴排列

Numerical Simulation of Tip Leakage Vortex Effect on hydrogen-Combustion Flow around 3D Turbine Blade

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Journal of Thermal Science 2008年第2期17卷 186-192页

作者： Naoto Miyama Kazuaki inaba Makoto Yamamoto Department of Mechanical Engineering Tokyo University of Science Graduate Aeronautical Laboratories California Institute of Technology

在这些年里，象空气污染和石块燃料的疲劳那样的很多环境问题强烈地被讨论了。在我们的实验室，一个造成氢的推进系统作为常规系统的一种选择被研究了。一个造成氢的推进系统被期望有更高的力量，更轻的重量和更低的排出物。为实际使用... 详细信息

在这些年里，象空气污染和石块燃料的疲劳那样的很多环境问题强烈地被讨论了。在我们的实验室，一个造成氢的推进系统作为常规系统的一种选择被研究了。一个造成氢的推进系统被期望有更高的力量，更轻的重量和更低的排出物。为实际使用，在那里然而存在必须被克服的许多问题。就这些背景而言，有在一个汽轮机片段落以内的造成氢的燃烧的喷气引擎被学习了。尽管一些研究在从一个定子注射和燃烧的氢燃料上被做了，出现，很少在一个转子尖端和造成氢的燃烧的吸方面附近对在一个尖端漏旋涡之间的相互作用被知道。这研究的目的是在一个汽轮机片段落以内与造成氢的燃烧在 3-dimensional 流动领域的特征上澄清尖端漏旋涡的影响。平均 Reynolds 的可压缩的海军司烧方程与合并骚乱和减少的化学机制建模的 k-ε 被解决。用计算结果， 3-dimensional 有化学反应的狂暴的流动地数字地被设想，并且三维的狂暴的流动与氢回答燃烧和尖端漏旋涡的结构被调查。

关键词：数字模拟气体涡轮机氢气燃烧性能

The Study of Latent heat Transport Characteristics by Solid Particles and Saccharide Solution Mixtures

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Journal of Thermal Science 2011年第2期20卷 155-160页

作者： Shin-ichi MORITA Yasutaka hAYAMIZU hideo inaba Department of Mechanical Engineering Yonago National College of Technology Tsuyama National College of Technology

The purpose of this study is the development of latent heat transport system by using the mixture of the minute latent heat storage materials and the saccharine solution as medium. The experimental studies are carried out by the evaluation of viscosity and pressure loss in a pipe. Polyethylene (P.E.) is selected as the dispersed minute material that has closeness density (920kg/m3) of ice (917kg/m3). D-sorbitol and D-xylose solutions are picked as continuum phase of the test mixture. The concentration of D-sorbitol solution is set 48mass% from measured results of saturation solubility and the melting point. 40mass% solution of D-xylose is selected as the other test continuum phase. The non-ion surfactant, EA157 Dai-ichiseiyaku CO. Ltd, is used in order to prevent of dispersed P.E. powder cohere. The pressure loss of test mixture is measured by the straight circular pipe that has smooth inner surface. The measuring length for pressure loss is 1000 mm, and the inner diameter of pipe is 15mm. The accuracy of experiment apparatus for measuring pressure loss is within ±5%. The pressure loss data is estimated by the relationship between the heat transport ratio and the required pump power. It is clarified that the optimum range of mixing ratio exists over 10mass% of latent heat storage material.

关键词：溶液混合固体颗粒糖精热输送非离子表面活性剂压力损失存储材料测试阶段

Preparation of Lanthanum Nickel Oxide-Coated Ni Sheet Anodes and Their Application to Electrolytic Production of (CF_3)_3N in (Ch_3)_4NF·4.0hF Melt

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Journal of Rare Earths 2006年第1期24卷 1-8页

作者： Yoshio Shodai Minoru inaba Kazuki Onoda Akimasa Tasaka Department of Molecular Science and Technology Faculty of Engineering Doshisha University Kyotanabe Kyoto 610-0321 Japan

A new process for electrolytic production of a perfluorinated compound, （CF3）3N, using lanthanum nickel oxide-coated Ni sheet anode in the （Ch3）4NF· 4.0hF melt at room temperature, was developed. Thin films of the lanthanum nickel oxides were prepared on Ni sheets by sol-gel coating method using polyvinlylpyrrolidone（PVP）. The main components of the thin films were La2O3, LaNiO3, and La2NiO4 at 500, 750 and 1000℃, respectively. The anode performance in the （Ch3）4NF·4.0hF melt depends greatly on the main component of the thin film, and the LaNiO3-coated Ni sheet anode gives the best anode performance. The potential of LaNiO3-coated Ni sheet anode remains constant at 5.9 V during electrolysis at 20 mA·cm^-2 in the （Ch3）4NF·4.0hF melt for 100 h. This is because LaNiO3 and NiF3 and/or Ni2F5, the latter of which was formed during electrolysis, in the film give a high electronic conductivity to the surface film during electrolysis. The maximum mole fraction of （CF3）3N （21.4%） was obtained at 20 mA·cm^-2 in （Ch3）4NF·4.0hF melt using the LaNiO3-coated Ni sheet.

关键词： electrolytic perfluorination lanthanum nickel oxide perfluorotrimethylamine rare earths

heat Transfer Efficiency Evaluation for Outward and Inward Multi-Flame-hole Gas Burner

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Journal of Thermal Science 2012年第2期21卷 189-195页

作者： Shin-ichi MORITA Yasutaka hAYAMIZU Takashi KATAYAMA hideo inaba Department of Mechanical Engineering Yonago National College of Technology 4448 Hikona-cho Yonago city Tottori 683-8502 Japan Department of System Production Engineering Yonago National College of Technology Advanced Course 4448 Hikona-cho Yonago city Tottori 683-8502 Japan Tsuyama National College of Technology 624-1 Numa Tsuyama city Okayama 708-8509 Japan

The purpose of this study is to understand the factor that influence the heating efficiency of the outward and inward multi-hole gas burner. The flame-hole angle and the distance from flame hole to heating object are chosen as the experimental parameters. The measurement of the flame temperature distribution is carried out on each experimental condition. The observation of combustion flame, by the Schlieren method, is done from the purpose to understand the combustion phenomenon on the heating efficiency. LPG (Liquefied petroleum gas) is used for the test fuel gas. The compositions of LPG are propane 97.5vol%, butane 0.2vol% and methane + ethylene 2.3vol%. The optimum ranges of the flame-hole angle and the distance from flame hole to heating object are clarified. The experimental correlation equations for the outward and inward multi-flame-hole gas burner are proposed.

关键词：燃气燃烧器火焰温度传热效率液化石油气评价实验参数分布测量实验条件

Shearing Mechanism of Straight Thin Copper Wires at Connecting Terminal due to Lightning Current

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Plasma Science and Technology 2007年第6期9卷 752-755页

作者：胡小博 Takahiro OTSUKA Toru IWAO Tsuginori inaba Chuo University Tokyo 112-8551Japan Toko Electric Corporation Saitama 349-0192Japan Musashi Institute of Technology Tokyo 158-8557Japan

When a lightning current is impressed through a copper wire, the copper wire would be melted. A straight thin copper wire with a diameter of 0.1 mm,~ is melted due to the specific melting Joule heating （j^2t）m in an adiabatic condition. however, it has been recognized in the experiment that the thicker copper wires of φ1 mm are not completely melted, but sheared mainly at the connecting terminal by a relatively low impulse current. Electro-magnetic mechanical shearing stress, etc. are discussed in addition to the conventional Joule heating. New broken mechanisms were presumed and proved in the additional experiments.

关键词： lightning copper wire broken

Experimental Study on Latent heat Storage Characteristics of W/O Emulsion-Supercooling Rate of Dispersed Water Drops by Direct Contact heat Exchange

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Journal of Thermal Science 2013年第2期22卷 145-151页

作者： Shin-ichi Morita Yasutaka hayamizu Akihiko horibe Naoto haruki hideo inaba Department of Mechanical Engineering Yonago National College of Technology Graduate School of Natural Science and Technology Okayama University Tsuyama National College of Technology

Recently, much attention has been paid to investigate the latent heat storage system. Using of ice heat storage system brings an equalization of electric power demand, because it will solved the electric -power-demand-concentration on day-time of summer by the air conditioning. The flowable latent heat storage material, Oil/Water type emulsion, microencapsulated latent heat material-water mixture or ice slurry, etc., is enable to transport the latent heat in a pipe. The flowable latent heat storage material can realize the pipe size reduction and system efficiency improvement. Supercooling phenomenon of the dispersed latent heat storage material in continuous phase brings the obstruction of latent heat storage. The latent heat storage rates of dispersed water drops in W/O (Water/Oil) emulsion are investigated experimentally in this study. The water drops in emulsion has the diameter within 3 ~ 25μm, the averaged water drop diameter is 7.3μm and the standard deviation is 2.9μm. The direct contact heat exchange method is chosen as the phase change rate evaluation of water drops in W/O emulsion. The supercooled temperature and the cooling rate are set as parameters of this study. The evaluation is performed by comparison between the results of this study and the past research. The obtained experimental result is shown that the 35K or more degree from melting point brings 100% latent heat storage rate of W/O emulsion. It was clarified that the supercooling rate of dispersed water particles in emulsion shows the larger value than that of the bulk water.

关键词：潜热储能过冷现象冷却速率直接接触散水实验储能特性滴眼液

Laparoscopic repair of hiatal hernia with mesenterioaxial volvulus of the stomach

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World Journal of Gastroenterology 2011年第15期17卷 2054-2057页

作者： Kazuki inaba Yoichi Sakurai Jun Isogaki Yoshiyuki Komori Ichiro Uyama Department of Surgery Fujita Health University School of Medicine 1-98 Dengakugakubo Kutsukake-cho Toyoake Aichi 470-1192 Japan

Although mesenterioaxial gastric volvulus is an uncommon entity characterized by rotation at the transverse axis of the stomach, laparoscopic repair procedures have still been controversial. We reported a case of mesenterioaxial intrathoracic gastric volvulus, which was successfully treated with laparoscopic repair of the diaphragmatic hiatal defect using a polytetrafluoroethylene mesh associated with Toupet fundoplication. A 70-year-old Japanese woman was admitted to our hospital because of sudden onset of upper abdominal pain. An upper gastrointestinal series revealed an incarcerated intrathoracic mesenterioaxial volvulus of the distal portion of the stomach and the duodenum. The complete laparoscopic approach was used to repair the volvulus. The laparoscopic procedures involved the repair of the hiatal hernia using polytetrafluoroethylene mesh and Toupet fundoplication. This case highlights the feasibility and effectiveness of the laparoscopic procedure, and laparoscopic repair of the hiatal defect using a polytetrafluoroethylene mesh associated with Toupet fundoplication may be useful for preventing postoperative recurrence of hiatal her-nia, volvulus, and gastroesophageal reflux.

关键词：修补程序胃扭转腹腔镜肠扭转聚四氟乙烯十二指肠消化道 hER