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原稿種別: 目次
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ii-ix
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佐野 正利
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1-2
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木村 元昭, 宮城 徳誠, 岩垂 裕司, Steve TUNG, Chih Ming Ho
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3-4
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Measurements of wall shear stress streaks of a turbulent boundary layer in the channel flow were carried out using MEMS-based micro shear stress imaging chip. The chip is designed and fabricated by surface micromachining technology. One array of 25 micro shear stress sensors in the chip that covers a length of 7.5 mm is used to measure the instantaneous spanwise distribution of the surface shear stress. The statistics of high shear stress streaks were established. Based on the measurement, the physical quantities associated with the high shear-stress streaks, such as their length, width and peak shear-stress level, were obtained.
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水沼 博
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5-6
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佐藤 勲
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7-8
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渡辺 裕
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9-10
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山本 博巳
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11-12
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土方 常夫
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13-14
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藤並 晶作
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15-17
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橋本 茂
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18-
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田島 正喜
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19-20
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古谷 泰, 伊藤 智也
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23-24
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木村 彰男
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25-26
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This paper describes an outline of micro gasturbine (MGT) cogeneration system that was developed by BOWMAN POWER Limited in England. The system is a fully integrated, compact micro gasturbine cogeneration package with 80kW electrical output and 150kW thermal output power, including stainless steel waste heat boiler. A high-speed, permanent magnet alternator, compressor and turbine are mounted on one shaft with no reduction gearbox. The shaft is supported with reliable oil-lubricated bearings. The power conditioner regulates and inverts a high frequency alternating current from the alternator output to 3phase, 400 to 480V, 50 or 60Hz alternating current. A Bowman unit can operate independently or in parallel to a commercial utility grid. The generator electrical efficiency of 28% and the overall thermal efficiency of the total cogeneration package over 80% are achieved.
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柴田 聡
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27-28
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前田 哲彦, 長谷川 裕夫, 岩崎 裕典
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29-30
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林 照剛, 三好 隆志
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31-32
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松井 真二
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33-34
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今野 武志, 江頭 満, 齋藤 恭子, 小林 幹彦, 新谷 紀雄
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35-36
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山口 勝美
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37-38
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山田 高幸
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39-40
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服部 正
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41-42
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安井 学, 平林 康男, 藤田 博之
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43-44
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柴田 隆行
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45-46
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The excellent mechanical, electrical, thermal, and chemical properties of diamond make it a candidate material for microsensors and microstructures to be used in microelectromechanical systems (MEMS). This paper describes micromachining techniques for the fabrication of diamond MEMS devices. The techniques include the patterning of chemical-vapor-deposited (CVD) diamond thin film by selective deposition, surface micromachining technique for the fabrication of movable microstructures, a silicon mold technique for the fabrication of three-dimensional microstructures, and a bonding technique for assembly. In addition, the application of micromachining techniques to the construction of some chosen diamond MEMS devices is also illustrated; these include a diamond microgripper driven by an electrostatic comb actuator, a semiconductive diamond tip for a scanning tunneling microscope (STM) as well as a machining tool, and a diamond probe for an atomic force microscope (AFM).
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生田 幸士
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47-48
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土屋 定之
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49-50
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高城 重厚
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51-52
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背戸 一登
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53-54
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本阿弥 眞治
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55-56
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有信 睦弘
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57-58
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長島 昭
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59-60
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背戸 一登
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61-62
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宮田 悟志, 工藤 啓治, 浅子 知昭, 宮川 浩
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63-64
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There are some kinds of design optimization problem that have little feasible region. In these problems, it is more important to find and establish feasible region, before trying to find improved optimum solution. Most of non-linear programming algorithms need its initial design point being set within feasible domain or just allowed a little violation of constrains. Also, regrading popular meta-heuristic algorithms, such like Genetic Algorithm (GA) and Simulated Annealing (SA), basic situatins are almost the same. So it is necessary to establish feasible region first to success optimization in such infeasible problem. We propose non linear discriminant analysis as such methodology.
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山縣 延樹, 鈴木 健太郎
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65-66
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浅貝 正樹, 小林 淳一
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67-68
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下田 郁夫, 池永 雅良, 田中 剛
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69-70
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窪田 優, 吉田 幸司, 庄司 秀夫, 田中 秀憲
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71-72
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The purpose of this study is to improve the engine performance and the exhaust gas emission characteristics of the diesel engine. The heated fuels are provided for the diesel engine in order to activate the fuel. The test engine is a four-stroke, direct fuel injection, diesel engine. The experiment is made under constant engine speed and const fuel injection volume. For an arbitrary mass flow rate of fuel injection, the fuel temperature is increased from 373 [K] to 673 [K] at 50 [K] intervals. The crank angles at ignition and maximum combustion pressure are delayed and the maximum combustion pressure is decreased as the fuel temperature rises. In cases of middle and large mass flow rate of fuel injection, the burning period is reduced and the brake thermal efficiency is decreased when the fuel temperature is higher than 573 [K]. However, NO_x concentration is gradually decreased as fuel temperature increases.
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吉崎 丈郁, 小川 雅也, 吉田 幸司, 庄司 秀夫, 田中 秀憲
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73-74
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The new fuel injection method, which is using the high voltage electrical discharge, is proposed. The long penetration depth and the rapid diffusion will be available due to short duration electrical discharge. The purpose of this study is to clarify the influence of injector configuration on the fuel spray condition. The liquid fuel filled up the cavity of injector and was spread into the combustion chamber filled with the air. The fuel spray process was visualized by a schlieren system. In cases of small orifice diameter, the injector which has cavity 5^*5 can inject fuel jet very fast as compared with other cavities. In cases of large orifice diameter, for all cavities, the fuel is widely spread from the injector. Therefore, the fuel jet velocity and the spray angle are influenced by cavity volume and orifice diameter. The injector with large orifice diameter is suitable for the fuel injection system of diesel engine.
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門野 照貴, 小林 哲也, 吉田 幸司, 庄司 秀夫
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75-76
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In this study, the effect of corona discharge on the combustion phenomenon has been made clear. A homogeneous propane-air mixture was used and three equivalence ratios were tested. For generating the positive and negative corona discharge, a non-uniform electric field was applied to the combustion chamber by the needle to plane gap. One or five needle-shaped electrodes were used to change the corona discharge state. When the positive corona discharge was applied, the luminescence from corona with five-electrode was weak as compared with that of one-electrode. When the negative corona discharge was applied, the luminesence from corona and combustion were not affected by number of electrode. When the positive corona discharge was applied by low voltage, the combustion was improved in the case of one-electrode, but the index of combustion with one-electrode was almost equal to that of five-electrode when the high voltage was applied.
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山田 典幸, 井上 浩一, 山田 賢司, 吉田 幸司, 庄司 秀夫
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77-78
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In this research, the influence of hot residual gas, spark plug washer temperature and the compression ratio on combustion was investigated when a two cycle engine was operated on methanol. With methanol as the test fuel, rapid transition from normal combustion to pre-ignition was observed when combustion chamber reached an overheated state. Measurements were made of the light emission intensity of the OH radical (characteristic spectrum of 306.4 nm), which plays an important role in the elemental reaction process of hydrocarbon fuels, together with measurements of the cylinder pressure and spark plug washer temperature. The measured data were analyzed from normal combustion to pre-ignition.
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