|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Numerical Investigation of Influence of Tip Leakage Flow on Secondary Flow in Transonic Centrifugal Compressor at Design Condition显示文摘In a centrifugal compressor, the leakage flow through the tip clearance generates the tip leakage vortex by the interaction with the main flow, and consequently makes the flow in the impeller passage more complex by the interaction with the passage vortex. In addition, the tip leakage vortex interacts with the shock wave on the suction surface near the blade tip in the transonic centrifugal compressor impeller. Therefore, the detailed examination for the influence of the tip leakage vortex becomes seriously important to improve the aerodynamic performance especially for the transonic centrifugal compressor. In this study, the flows in the transonic centrifugal compressor with and without the tip clearance at the design condition were analyzed numerically by using the commercial CFD code. The computed results revealed that the tip leakage vortex induced by the high loading at the blade tip around the leading edge affected the loss generation by the reduction or the suppression of the shock wave on the suction surface of the blade. | Masanao Kaneko Hoshio Tsujita | 2015 | Journal of Thermal Science2015，24，2： | 11 |
| 2 | 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 |
| 3 | Effect of Double Air Injection on Performance Characteristics of Centrifugal Compressor显示文摘In the operation of a centrifugal compressor of turbocharger, instability phenomena such as rotating stall and surge are induced at a lower flow rate close to the maximum pressure ratio. In this study, for the suppression of surge phenomenon resulting in the extension of the stable operating range of centrifugal compressor to lower flow rate, the compressed air at the compressor exit was re-circulated and injected into the impeller inlet by using the double injection nozzle system. The experiments were performed to find out the optimum circumferential position of the second nozzle relative to the fixed first one and the optimum inner diameter of the injection nozzles, which are able to most effectively reduce the flow rate of surge inception. Moreover, in order to examine the universality of these optimum values, the experiments were carried out for two types of compressors. | Toshiyuki Hirano Mizuki Takano Hoshio Tsujita | 2015 | Journal of Thermal Science2015，24，1： | 3 |
| 4 | Decrease of CD56 + T Cells and Natural Killer Cells in Cirrhotic Livers With Hepatitis C May Be Involved in Their Susceptibility to Hepatocellular Carcinoma显示文摘 | Nobuaki Kawarabayashi Shuhji Seki Kazuo Hatsuse Takashi Ohkawa Yuji Koike Tsukasa Aihara Yoshiko Habu Ryusuke Nakagawa Katsunori Ami Hoshio Hiraide Hidetaka Mochizuki | 2000 | Hepatology2000，，5： | 2 |
| 5 | Investigation of Surge Behavior in a Micro Centrifugal Compressor显示文摘这份报纸报导巨浪的试验性、理论的学习发生在原型一台极端微离心的压缩机。作为第一步, 10 次缩放有 40 公里的一台极端微离心的压缩机的模型外部直径被设计并且生产。为有 B 参数的几不同价值的巨浪的短暂行为的详细试验性的调查被执行。试验性的结果在巨浪期间与非线性的 lumped 参数理论获得以便为微离心的压缩机验证理论巨浪模型的有效性的那些相比。作为结果,巨浪的相当不同的行为在实验并且在分析为 B 的不同价值出现了。关键词微离心的压缩机 - 澎湃 - lumped 参数模型 CLC 数字 TK474. | Shimpei MIZUKI Yuichiro ASAGA Yushi ONO Hoshio TSUJITA | 2006 | Journal of Thermal Science2006，15，2： | 2 |
| 6 | Effect of Double Air Injection on Performance Characteristics of CentrifugalCompressor显示文摘In the operation of a centrifugal compressor of turbocharger, instability phenomena such as rotating stall and surge are induced at a lower flow rate close to the maximum pressure ratio. In this study, the compressed air at the exit of centrifugal compressor was re-circulated and injected to the impeller inlet by using two injection nozzles in order to suppress the surge phenomenon. The most effective circumferential position was examined to reduce the flow rate at the surge inception. Moreover, the influences of the injection on the fluctuating property of the flow field before and after the surge inception were investigated by examining the frequency of static pressure fluctuation on the wall surface and visualizing the compressor wall surface by oil-film visualization technique. | Toshiyuki Hirano Tatsuya Ogawa Ryutaro Yasui Hoshio Tsujita | 2017 | Journal of Thermal Science2017，26，1： | 2 |
| 7 | Numerical Investigation of Loss Generation Mechanisms of Flow in Turbomachinery by Using Curved Square Duct显示文摘The secondary flow within a passage of mrbomachinery exhibits a complex flow pattern by the effect of the centrifugal and the Coriolis forces. The passage vortex in this secondary flow generates a major part of the losses.However, the mechanism of the loss generation has not been fully clarified yet. In this point of view, the passage vortex is closely examined by the computational method using the two-dimensional curved square ducts as fundamental models. The inlet boundary layer thickness and the inlet velocity distortion are considered to be the major parameters affecting the generation of passage vortex in the present study. The computed results revealed that the passage vortex gave the predominant effects for the generation of loss not only in the breakdown process but also in the development process. | Hoshio Tsujita Shimpei Mizuki Gaku Minorikawa Atsumasa Yamamoto | 2003 | Journal of Thermal Science2003，12，3： | 1 |
| 8 | Selective uptake of intraluminal dexiran sulface sodium and senna by macrophages in the cecal mucosa of the guinea pig 显示文摘 | HOSHIO J WANAGN T FUJINO MA | 1996 | Gastroenterol1996，31，： | 1 |
| 9 | The cDNA cloning and transient expression of a chicken gene encoding a follicle-stimulating homone receptor显示文摘 | Wakabayashi N Suzuki A Hoshio H Nishimori K Mizuno S | 1997 | Gene1997，197，12： | 1 |
| 10 | Prototyping of Ultra Micro Centrifugal Compressor-Influence of Meridional Configuration显示文摘In order to investigate the design method for a micro centrifugal compressor,which is the most important component of an ultra micro gas turbine,two types of centrifugal impeller with 2-dimensional blade were designed,manufactured and tested.These impellers have different shapes of hub on the meridional plane with each other.Moreover,these types of impeller were made for the 5 times and the 6 times size of the final target centrifugal impeller with the outer diameter of 4mm in order to assess the similitude for the impellers.The comparison among the performance characteristics of the impellers revealed the influence of the meridional configuration on the performance and the similitude of the compressors. | Toshiyuki Hirano Tadataka Muto Hoshio Tsujita | 2011 | Journal of Thermal Science2011，20，4： | 1 |
| 11 | Surge Control of a Centrifugal Compression System by Using a Bouncing Ball显示文摘这研究的目的是由一个简单被动控制方法压制巨浪的变化。有球的不同重量的一个弹起的球系统被测试。作为结果,没有表演特征的恶化,弹起的球系统压制了温和巨浪,并且当钢 15mm 成球形时,向更低的流动率移动了巨浪的开始点外部直径被使用。当球适当地被选择时,现在的系统是有效的压制巨浪并且拓宽离心压气机的稳定的操作范围。 | Yuichiro Asaga Shimpei Mizuki Hoshio Tsujita Shinsuke Ohta | 2008 | Journal of Thermal Science2008，17，2： | 1 |
| 12 | Endomorphins inhibit highthreshold Ca2+ channel currents in rodent NG108-15 cells overexpressing mu-opioid receptors显示文摘 | Higashida H Hoshio N Knijnik R | 1998 | J Physiol1998，507，1： | 1 |
| 13 | Characterization of nitrifying granules produced in an aerobic upflow fluidized bed reactor 显示文摘 | Tsuneda S Nagano T Hoshio T | 2003 | Water Res2003，37，： | 1 |
| 14 | Isolation and characterization of a novel immunomodulatory α-glucan-protein complex from the mycelium of Tricholoma matsrtake in basidiomycetes显示文摘 | HOSHIO H YAGI Y IIJIMA H | 2005 | Agric Food Chem2005，53，： | 1 |
| 15 | Preparation of aromatic polyesters by the direct polycondensation reaction with diphenyl chlorophosphate in pyridine 显示文摘 | HIGASHI F HOSHIO A KIYOSHIGE J | 1983 | J Poly Sci Polym Chem Ed1983，21，11： | 1 |
| 16 | Numerical Analysis of Flow in Ultra Micro Centrifugal Compressor -Influence of Meridional Configuration显示文摘A single stage ultra micro centrifugal compressor constituting ultra micro gas turbine is required to operate at high rotational speed in order to achieve the pressure ratio which establishes the gas turbine cycle. As a consequence, the aerodynamic losses can be increased by the interaction of a shock wave with the boundary layer on the blade surface. Moreover, the centrifugal force which exceeds the allowable stress of the impeller material can act on the root of blades. On the other hand, the restrictions of processing technology for the downsizing of impeller not only relatively enlarge the size of tip clearance but also make it difficult to shape the impeller with the three-dimensional blade. Therefore, it is important to establish the design technology for the impeller with the two-dimensional blade which possesses the sufficient aerodynamic performance and enough strength to bear the centrifugal force caused by the high rotational speed. In this study, the flow in two types of impeller with the two-dimensional blade which have different meridional configuration was analyzed numerically. The computed results clarified the influence of the meridional configuration on the loss generations in the impeller passage. | Masanao Kaneko Hoshio Tsujita Toshiyuki Hirano | 2013 | Journal of Thermal Science2013，22，2： | 0 |
| 17 | Influences of Incidence Angle on 2D-Flow and Secondary Flow Structure in Ultra-Highly Loaded Turbine Cascade显示文摘An increase of turbine blade loading can reduce the numbers of blade and stage of gas turbines. However, an increase of blade loading makes the secondary flow much stronger because of the steep pitch-wise pressure gradient in the cascade passage, and consequently deteriorates the turbine efficiency. In this study, the computations were performed for the flow in an ultra-highly loaded turbine cascade with high turning angle in order to clarify the effects of the incidence angle on the two dimensional flow and the secondary flow in the cascade passage, which cause the profile loss and the secondary loss, respectively. The computed results showed good agreement with the experimental surface oil flow visualizations and the blade surface static pressure at mid-span of the blade. The profile loss was strongly increased by the increase of incidence angle especially in the positive range. Moreover, the positive incidences not only strengthened the horseshoe vortex and the passage vortex but also induced a new vortex on the end-wall. Moreover, the newly formed vortex influenced the formation of the pressure side leg of horseshoe vortex. | Hoshio Tsujita Atsumasa Yamamoto | 2014 | Journal of Thermal Science2014，23，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员