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JSME international journal : bulletin of the JSME最新文献

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Thermodynamic Analysis of the Two-Component, Two-Phase Stirling Cycle 两组分两相斯特林循环的热力学分析
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/KIKAIB.53.1459
Y. Matsuno, N. Kasagi, M. Hirata
{"title":"Thermodynamic Analysis of the Two-Component, Two-Phase Stirling Cycle","authors":"Y. Matsuno, N. Kasagi, M. Hirata","doi":"10.1299/KIKAIB.53.1459","DOIUrl":"https://doi.org/10.1299/KIKAIB.53.1459","url":null,"abstract":"A theoretical analysis has been carried out of the two-component, two-phase regenerative Stirling cycle using a mixture of condensable and incondensable gases as a working fluid. When the condensable component always remains in its wet region throughout the entire cycle, the thermal efficiency is smaller, while the specific work is remarkably larger, if compared with those of an ordinary one-component Stirling cycle working under the same temperature conditions. In the case where the condensable component is superheated during the isothermal expansion process, the rate of increase of the specific work with the cycle compression ratio becomes somewhat smaller than that of the cycle working in the wet region, but considerably higher thermal efficiency can be obtained. Generally, the cycle characteristics are mainly dependent on the thermophysical properties of the condensable component.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125558979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Slow Flow Through Porous Materials (Effect of Reynolds Number on Drag Coefficient) 多孔材料缓慢流动(雷诺数对阻力系数的影响)
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/JSME1987.30.1928
T. Katoh, M. Kyo, S. Kawamata, Nobunori Ohshima
{"title":"Slow Flow Through Porous Materials (Effect of Reynolds Number on Drag Coefficient)","authors":"T. Katoh, M. Kyo, S. Kawamata, Nobunori Ohshima","doi":"10.1299/JSME1987.30.1928","DOIUrl":"https://doi.org/10.1299/JSME1987.30.1928","url":null,"abstract":"2020The drag coefficient of porous materials in slow flow is examined theoretically and experimentally. A theoretical solution for a three-dimensional Oseen's equation is obtained by using a variational consideration and the cell model. From this solution, the drag coefficient is determined as a function of Reynolds number and volume fraction. Theoretical results are compared with experimental ones obtained by using spheres or a coil model as a porous material. It is found that the theoretical analysis is available for Oseen's equation and that the upper limit of effective region for Reynolds number is about 30. The value of drag coefficient for a general porous material from 2-dimensional theory.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124713960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Self-Sustained Oscillation in an Axisymmetric Impinging Shear Layer 轴对称碰撞剪切层的自持续振荡
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/KIKAIB.53.1254
H. Kurasawa, T. Obata, M. Hirata, N. Kasagi
{"title":"Self-Sustained Oscillation in an Axisymmetric Impinging Shear Layer","authors":"H. Kurasawa, T. Obata, M. Hirata, N. Kasagi","doi":"10.1299/KIKAIB.53.1254","DOIUrl":"https://doi.org/10.1299/KIKAIB.53.1254","url":null,"abstract":"Self-sustained oscillation of a shear layer has been experimentally investigated in an axisymmetric jet impinging on a sharp-edge ring. As many as five modal stages are identified with discrete changes of the dominant frequency as the distance between the jet-nozzle exit and the ring is changed. The dominant frequency observed in each stage can be correlated by a simple empirical equation when nondimensionalized with the initial momentum thickness of the shear layer. The frequency change between two successive stages is also shown to obey a general rule of modal transition. An analysis of the phase-lag of velocity signals at various streamwise locations reveals a downstream travelling wave, while the associated vortex formation is confirmed by smoke-wire flow-visualization.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133177002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Rayleigh-Step Face Seal with Reverse Steps 瑞利台阶面密封与反向步骤
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/JSME1987.30.2027
K. Ikeuchi, H. Mori, Tohru Nishida
{"title":"A Rayleigh-Step Face Seal with Reverse Steps","authors":"K. Ikeuchi, H. Mori, Tohru Nishida","doi":"10.1299/JSME1987.30.2027","DOIUrl":"https://doi.org/10.1299/JSME1987.30.2027","url":null,"abstract":"This paper presents a new hydrodynamic seal, in which the pressure drops caused by the reverse steps reduce the hydrodynamic film force, while they scarcely affect the film stiffness if the step recesses are deep enough. Thus, the clearance is controlled at high-speed operation. The numerical analysis clarifies that the leakage flow rate of the seal is less than a critical value over the entire range of rotating velocities. The critical leakage flow rate which corresponds to a zero hydrodynamic film force condition is determined by the seal face design, and it is independent of the balance ratio. If the seal operates at a relatively low balance ratio, a hydrodynamic lubricating film is formed at a low velocity. In addition, leakage is limited at a high velocity. The experimental results confirm that a seal with reverse steps shows excellent performance over a wide range of rotating velocities.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133244233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Reconsideration of the transient line heat-source technique (analytical discussion on the influence of natural convection) 再论瞬态线热源技术(对自然对流影响的解析讨论)
JSME international journal : bulletin of the JSME Pub Date : 1987-12-01 DOI: 10.1299/JSME1987.30.1935
A. Saito, Koji Matsumoto, Y. Utaka
{"title":"Reconsideration of the transient line heat-source technique (analytical discussion on the influence of natural convection)","authors":"A. Saito, Koji Matsumoto, Y. Utaka","doi":"10.1299/JSME1987.30.1935","DOIUrl":"https://doi.org/10.1299/JSME1987.30.1935","url":null,"abstract":"In this paper, weak natural convection effects in the transient hot wire method of liquid thermal conductivity measurement are analytically investigated. Precise numerical calculations are performed using the FDM, concerning the slow natural convection liquid flow around a single thin hot wire and the distribution of the modified temperature term due to the flow. Then, the time dependencies of the apparent thermal conductivity, including the natural convection effects, are shown for various measuring conditions. The error in measurement are also shown for the case where two hot wires, having different lengths, are set in the Wheatstone bridge circuit to decrease the edge effects. It is shown, as a result, that slight natural convection effects appear, even during short periods of measurement, where the effects on accuracy had been considered negligible.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122956405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
An Analysis for Large Deflection Problems of Beams on Elastic Foundation by the Boundary Integral Equation Method : Series A : Solid-Mechanics, Strength of Materials 用边界积分方程法分析弹性地基梁的大挠度问题(A辑:固体力学，材料强度)
JSME international journal : bulletin of the JSME Pub Date : 1987-11-16 DOI: 10.1299/KIKAIA.53.622
T. Horibe
{"title":"An Analysis for Large Deflection Problems of Beams on Elastic Foundation by the Boundary Integral Equation Method : Series A : Solid-Mechanics, Strength of Materials","authors":"T. Horibe","doi":"10.1299/KIKAIA.53.622","DOIUrl":"https://doi.org/10.1299/KIKAIA.53.622","url":null,"abstract":"","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125047210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Temperature Variation of Foil Strain Gage by Ambient Air Condition : Series A : Solid-Mechanics, Strength of Materials 环境空气条件下箔片应变片的温度变化:A系列:固体力学，材料强度
JSME international journal : bulletin of the JSME Pub Date : 1987-11-16 DOI: 10.1299/kikaia.53.660
Y. Kojima
{"title":"Temperature Variation of Foil Strain Gage by Ambient Air Condition : Series A : Solid-Mechanics, Strength of Materials","authors":"Y. Kojima","doi":"10.1299/kikaia.53.660","DOIUrl":"https://doi.org/10.1299/kikaia.53.660","url":null,"abstract":"The temperature variations of strain gages, caused by the power dissipated in the gage are calculated by the three-dimensional finite element method. When gages are bonded to materials with lower thermal diffusivities, such as plastic, the rise in the temperature of the gages depends not only upon the area of the grid of the gage, which is often used to characterize the heat-dissipation characteristics of a strain gage, but upon the length and the width of the filament, and the number of filaments. When gages are bonded to materials with higher thermal diffusivities such as steel or alumimum alloy, most of the temperature rise is produced in the base of the gage, so as to depend upon the heat flux per unit area of filament and the thickness of the base. Temperature variations of strain gages caused by ambient-temperature variations with time are also calculated using an axis-symmetrical model. In various conditions of a gage installation, the effective factors which govern temperature variation were clarified.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114819330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Technical Development of Radiated Noise Reduction Using Sensitivity Analysis : Series C : Vibration, Control Engineering, Engineering for Industry 基于灵敏度分析的辐射降噪技术发展:C系列:振动、控制工程、工业工程
JSME international journal : bulletin of the JSME Pub Date : 1987-11-16 DOI: 10.1299/KIKAIC.53.626
I. Hagiwara, Masamitsu Yaoi
{"title":"Technical Development of Radiated Noise Reduction Using Sensitivity Analysis : Series C : Vibration, Control Engineering, Engineering for Industry","authors":"I. Hagiwara, Masamitsu Yaoi","doi":"10.1299/KIKAIC.53.626","DOIUrl":"https://doi.org/10.1299/KIKAIC.53.626","url":null,"abstract":"As engine block vibration contributes to engine noise, reducing the noise it readiates has become a major theme. Recently, radiated noise has been calculated on the basis of structural vibration data using BEM. Although there have been reports on radiated noise calculations, no literature reporting investigations of structural changes to reduce radiated noise has appeared. In this study, we investigated the basis of BEM to calculate radiated noise. We applied FEM to a rectangular panel model to analyze its vibrations. Using BEM we calculated the radiated noise from this vibration data. Next, in order to find a method for making structural changes, we applied the eigenmode sensitivity analysis method proposed by one of the authors. As a result we were able to reduce the noise pressure level radiating from the rectangular panel.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128094062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Post-Buckling Behavior of Centrally Cracked Plates Under Tension : Solid-Mechanics, Strength of Materials 中心裂纹板在张力作用下的后屈曲行为:固体力学，材料强度
JSME international journal : bulletin of the JSME Pub Date : 1987-11-16 DOI: 10.1299/JSME1987.30.1714
T. Fujimoto, S. Sumi
{"title":"Post-Buckling Behavior of Centrally Cracked Plates Under Tension : Solid-Mechanics, Strength of Materials","authors":"T. Fujimoto, S. Sumi","doi":"10.1299/JSME1987.30.1714","DOIUrl":"https://doi.org/10.1299/JSME1987.30.1714","url":null,"abstract":"","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128164900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analysis of a Loop-flow Type of Automated Manufacturing System : Vibration, Control Engineering, Engineering for Industry 环流型自动化制造系统的分析:振动，控制工程，工业工程
JSME international journal : bulletin of the JSME Pub Date : 1987-11-16 DOI: 10.1299/JSME1987.30.1840
T. Shioyama, H. Kise
{"title":"Analysis of a Loop-flow Type of Automated Manufacturing System : Vibration, Control Engineering, Engineering for Industry","authors":"T. Shioyama, H. Kise","doi":"10.1299/JSME1987.30.1840","DOIUrl":"https://doi.org/10.1299/JSME1987.30.1840","url":null,"abstract":"","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127924329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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