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| 1 | Computational Cavitation Flows at Inception and Light Stages on an Axial-Flow Pump Blade and in a Cage-Guided Control Valve显示文摘在轴流动的泵片附近并且在一个高压力笼子类型阀门内导致的成穴流动被二维的不稳定的海军司烧分析与水泡动力学的最简单的处理模仿。液体作为水和蒸汽原子核的同类的驱散的混合的连续统被假定。分析被瞄准特别在成穴开始的舞台在水泡的出生和倒塌期间与高振幅压力变化捕获短暂舞台。由泵片分析,地压力在是中等的,开始的成穴数字和发达成穴的地点被发现在在高发生和否定发生之间的一个宽流动范围同意试验性的结果。在阀门流动分析, 5MPa 的水压力在被归结为 2MPa,压力变化对在蒸汽压力之间的水泡倒塌作出回应比 1 KPa 和极端压力降低高,比 104, KPa 通过稳定的计算被捕获。到阀门塞子的开始水泡和压力力量的地点被发现与各自的试验性的特征同意很好。 | Sumio SAITO MasahiroSHIBATA HideoFUKAE Eisuke OUTA | 2007 | Journal of Thermal Science2007，16，4： | 12 |
| 2 | Effects of Diffuser Vane Geometry on Interaction Noise Generated from a Centrifugal Compressor显示文摘相互作用音调噪音的特征与 vaned 从一台离心的压缩机放射了更弥漫被实验讨论,包括用油电影方法的可视化技术。研究注意对是的更弥漫的翼的前缘几何学被给予深深地与相互作用音调噪音的产生机制有关。散发压缩机的噪音能被在压力上升系数与某衰落一起将一些清理放在中心和更弥漫的墙的笼罩表面被几分贝减少。自从结果被第二等的流动被流动冲击并且也在更弥漫的段落以内引起的衰落,不从表演和噪音水平毁损的更弥漫的翼几何学的几种新类型为实验被开发并且利用。介绍的更弥漫的翼几何学将为更弥漫的翼设计为一些提供基本指南。关键词离心的压缩机 - vaned 更弥漫 - 相互作用噪音 - 噪音减小 CLC 数字 TK474. | Yutaka OHTA Naho TAKEHARA Yasuhiko OKUTSU Eisuke OUTA | 2005 | Journal of Thermal Science2005，14，4： | 10 |
| 3 | Design and Prototyping of Micro Centrifugal Compressor for Ultra Micro Gas Turbine显示文摘以便建立设计一台极端微离心的压缩机的方法论,是一个极端微煤气的汽轮机单位的最重要的部件,最后的目标压缩机的 10 次尺寸(impeller 外部直径 40 公里,改正的旋转速度 220,000 r/min ) 被设计。为精简要解决的问题被检验,当第一由于它的生产率当模特儿, 2-dimensional impeller 被选择。常规 1D 预言方法和 CFD 被使用。建原型的压缩机被以 110,000 r/min 的减少的速度使用冷空气测试。对 10 次模型,后面期末考试的 5 次尺寸充分让 3-dimensional 塑造的目标模型(impeller 外部直径 20mm,改正的旋转速度 500,000 r/min ) 被以 250,000 r/min 的减少的速度使用热气体设计并且测试。关键词离心的压缩机 - 表演特征 - 3-dimensional impeller CLC 数字 TK474. | Shimpei MIZUKI Toshiyuki HIRANO Yoshiyuki KOIZUMI Gaku MINORIKAWA Hoshio TSUJITA Mitsuo IWAHARA Ronglei GU Yutaka OHTA Eisuke OUTA | 2005 | Journal of Thermal Science2005，14，4： | 5 |
| 4 | Unsteady Flow Field under Surge and Rotating Stall in a Three-stage Axial Flow Compressor显示文摘The unsteady flow structure between rotor blade-to-blade passages in a three-stage axial flow compressor is experimentally investigated by detailed measurements of unsteady performance characteristics,casing wall pressure fluctuations and their wavelet analyses.The main feature of the test compressor is a capacity tank facility connected in series to the compressor outlet in order to supply compression and/or expansion waves from downstream of the compressor.Research attention is focused on the post-stall characteristics of the surge and rotating stall which occur simultaneously.The influence of the compressor operating point on the unsteady performance curve shows that the surge cycle changes irregularly depending on the steady-state resistance characteristics,and the results of the wavelet analyses of the wall pressure fluctuations suggest that the surge cycle may selectively be determined by the rotating stall cell structure within the rotor cascade. | Takayuki HARA Daisuke MORITA Yutaka OHTA Eisuke OUTA | 2011 | Journal of Thermal Science2011，20，1： | 5 |
| 5 | Noise Reduction and Surge Margin Improvement Using Tapered Diffuser Vane in a Centrifugal Compressor显示文摘Improvement of surge margin and reduction of interaction tone noise radiated from a centrifugal compressor with a vaned diffuser is discussed from experiments and CFD analyses.Two types of one-side tapered diffuser vanes,which are shroud-and hub-side tapered vanes,were used in the experiments.The height of the leading edge of the tapered vanes varied from 100% to 10%.Both types of tapered vanes are effective for the reduction of the interaction tone noise radiated from the compressor,because of the smaller interaction area between impeller-discharge flow and diffuser vane surface.Especially,the hub-side tapered diffuser vane suppresses the evolution of the leading-edge vortex,which causes reverse-flow in the diffuser passage.Furthermore,the hub-side tapered diffuser vane,which has an optimized diffuser leading edge shape,can improve the compressor pressure-rise characteristics at low-flow operation and can enlarge the surge margin. | Takashi Goto Eri Ohmoto Yutaka Ohta Eisuke Outa | 2010 | Journal of Thermal Science2010，19，1： | 3 |
| 6 | Rotating Stall and Stall-Controlled Performance of a Single Stage Subsonic Axial Compressor显示文摘由气体动力学和在轴的压缩机的旋转货摊的控制动力学上的各种各样的作者的活动首先被跟踪。然后,在一个亚声的阶段的货摊房间进化的一个过程基于 2-D CFD 被讨论。旋涡的一些数字在积累从轻轻地阻止的片逐出的涡度的转子前成长,并且最后组织环绕地排列的巨大的旋涡的一个房间,它在旋转期间反复合并并且暂停。如此的货摊骚乱在领先的方面上在环绕的入口失真和腐烂的后面的方面上被加强。就这些特征而言,为货摊警告的一个新算法在每过去固定的片基于在压力波形之间的关联被开发。在关联水平在的一个显著变化近货摊在货摊发作以前向一个警告信号提供足够地大的时间边缘。这个计划被使用由激活在中心上安装的拍动完成旋转货摊预防。最后问题在很增加了的向前打扫的片的特征上与减少的尖端损失扼杀边缘。一个第二等的旋涡在吸产生了的 A 3-D 计算表演出现中间的跨度交往减少开始货摊的尖端漏旋涡。关键词旋转货摊 - 货摊警告察觉到 - 货摊控制 - 向前打扫的片 - 二 -- 并且三维的不稳定的 CFD - 货摊房间结构 - 尖端漏流动 CLC 数字 TK474. | Eisuke OUTA | 2006 | Journal of Thermal Science2006，15，1： | 3 |
| 7 | Design and Prototyping of Micro Centrifugal Compressor显示文摘In order to establish the design methodology of ultra micro centrifugal compressor,wich is the most important component of ultra micro gas turbine unit,a 10 times of the final target size model was designed,prototyped and tested.The problems to be solved for downsizing were examined and 2-dimensional impeller was chosen as the first model due to its productivity.The conventional 1D prediction method.CFD and the inverse design were attempted.The prototyped compressor was driven by using a turbocharger and the performance characteristics were measured. | Shimpei Mizuki Gaku Minorikawa Toshiyuki Hirano Yuichiro Asaga Naoki Yamaguchi Yutaka Ohta Eisuke Outa | 2003 | Journal of Thermal Science2003，12，1： | 1 |
| 8 | A Two-Dimensional Computer Simulation of Exhaust Gas Behavior inside a Rotary Engine System显示文摘 | Yuji Hamai Eisuke Outa | 1993 | SAE paper(930681)1993，110，： | 1 |
| 9 | Characteristics of the Blade-Passing Frequency Noise of a Centrifugal Fan and a Method for Noise Reducing显示文摘 | Yutaka Ohta Eisuke Outa and Kiyohiro Taiima | 1989 | JSME International Journal Series II1989，32，2： | 1 |
| 10 | Stall Inception Process and Prospects for Active Hub-Flap Control in Three-Stage Axial Flow Compressor显示文摘使用活跃中心拍动的可能性控制方法,它是为一台单个阶段的压缩机的一个证明旋转货摊控制方法,到 3 阶段轴的压缩机试验性地被讨论,在复杂旋转货摊开始进程被观察的地方。研究压缩机是 3 阶段并且能为转子片和定子翼改变 stagger 角度背景。十六个转子片 / 定子翼配置模式被变化测试蹒跚为定子翼的角度。由表面压力变化的测量,货摊开始进程被调查,测量压力变化数据为旋转货摊被用作一个预兆的信号。货摊察觉系统在一台单个阶段的压缩机用于活跃中心拍动控制的试验性的结果表演能有用地与一个更复杂的货摊开始过程在一台 3 阶段压缩机被用于那。 | Tomoya OKADA Atsushi KAWAJIRI Yutaka OHTA Eisuke OUTA | 2008 | Journal of Thermal Science2008，17，4： | 0 |
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