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- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
- Transactions of the Japan Society of Mechanical Engineers Series C
- Transactions of the Japan Society of Mechanical Engineers Series B
- Transactions of the Japan Society of Mechanical Engineers Series A
Volume 9 (1943 - 1944･･･
- Issue 37-4 Pages 113-
- Issue 37-3 Pages 53-
- Issue 37-2 Pages 103-
- Issue 37-1 Pages 161-
- Issue 36-4 Pages 89-
- Issue 36-2 Pages 69-
- Issue 36-1 Pages 121-
- Issue 35-4 Pages 27-
- Issue 35-3 Pages 23-
- Issue 35-2 Pages 43-
- Issue 35-1 Pages 33-
- Issue 34-4 Pages 1-
- Issue 34-3 Pages 1-
- Issue 34-2 Pages 1-
- Issue 34-1 Pages 1-
Volume 8 (1942)
- Issue 33-4 Pages 215-
- Issue 33-3 Pages 33-
- Issue 33-2 Pages 63-
- Issue 33-1 Pages 185-
- Issue 32-4 Pages 185-
- Issue 32-3 Pages 21-
- Issue 32-2 Pages 53-
- Issue 32-1 Pages 117-
- Issue 31-4 Pages 101-
- Issue 31-3 Pages 1-
- Issue 31-2 Pages 25-
- Issue 31-1 Pages 43-
- Issue 30-4 Pages 1-
- Issue 30-2 Pages 1-
- Issue 30-1 Pages 1-
Volume 20, Issue 97
Displaying 1-10 of 10 articles from this issue
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[in Japanese]1954 Volume 20 Issue 97 Pages 573-576
Published: September 25, 1954
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSDownload PDF (640K) -
Eiji KASAHARA1954 Volume 20 Issue 97 Pages 577-581
Published: September 25, 1954
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn this paper the author presents a method of conformal mapping of cascade into the unit circle, using a method of successive approximation, simple in computation and high in accuracy. In this method the Fourier analysis of blade section is unneccessary and the conjugate Fourier series, which plays an important role in this theory, is calculated in the integral form. An exact solution can be obtained for the cascade of highly cambered thick blade with close spacing by successive approximation. Numerical examples are included.View full abstractDownload PDF (680K) -
Busuke HUDIMOTO, Shigeo KUBOTA1954 Volume 20 Issue 97 Pages 582-589
Published: September 25, 1954
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSExperiments on the steam-and gas-turbine blades were carried out to obtain their aerodynamic characteristics, using a wind tunnel. Seven kinds of turbine blades of impulse type were used, some of them have profiles of conventional forms and the others have aerofoil-shaped profiles. Their characteristics i. e. the force acting on the blade, the direction of the leaving stream and the loss coefficient are shown in the accompanied figures. The effect of the curvature of the blade surface on the pressure distribution, the effect of Reynolds number and the effect of the surface roughness are also explained.View full abstractDownload PDF (877K) -
Busuke HUDIMOTO, Shigeo KUBOTA1954 Volume 20 Issue 97 Pages 589-594
Published: September 25, 1954
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSExperiments on the steam and gas-turbine blades were carried out to obtain their aerodynamic charactersistics. A kind of the turbine blade reported in the 1 st report was used and, in this case, both the spans of the blades and the breadths of the impinging jets were varied so as to obtain the three-dimensional effect at the jet boundaries. The spanwise distribution of the aerodynamic force or the distribution of the circulation and the direction of the leaving stream were investigated and described in the paper.View full abstractDownload PDF (759K) -
Naotsugu MASUGI1954 Volume 20 Issue 97 Pages 594-599
Published: September 25, 1954
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe one dimensional theoretical calculations of compressible gas flow in nozzles accompanied by turbulent layer at the walls, are carried out in this paper using the similar methods to the case of laminer layer of Part 1. By theoretical consideration, the characteristic nozzle number for the case of turbulent layer is determined by Ω'=lν01/4/r5/4uso1/4 The experiments of pressure distrbutions of twenty simple nozzles are done, and analyzing their results, the foregoing theoretical results of the two reports are well proved in quality and quantities. The critical Reynold's number is estimated to be 104∼105, and in practice, the large nozzles more than about 10 mm dia, belong to the turbulent domain.View full abstractDownload PDF (832K) -
Naotsugu MASUGI1954 Volume 20 Issue 97 Pages 599-604
Published: September 25, 1954
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe theoretical calculations of compressible gas flow of nozzle accompanied by laminer or turbulent boundary layer at its wall, are extended to the case of convergent and divergent nozzles in this paper, using assumptions, equations and methods similar to those of the foregoing papers, which discussed the parallel walled straight simple nozzle only. And Schrielen photographic experiments of miscellaneous nozzles of conv. div. and parallel walls are done. By the results from above calculations and experiments, there exists supersonic main flow inside the nozzle end of parallel nozzle, and though, of convergent nozzle. And in divergent nozzle, there are some cases where the acoustic line is put away from throat into the divergent part.View full abstractDownload PDF (1478K) -
Tomosada JOTAKI1954 Volume 20 Issue 97 Pages 604-611
Published: September 25, 1954
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn the recentm ulti-cyclone, guide vane is used to get turbulent flow in the cyclone separator. Although this method has many preferable points compared with the tangential flow type, the character of turbulent flow by this manner, relations among dimension ratios of cyclone main parts and its characteristics are almost unknown. This report describes these on the analytical and experimental data, and decuces the empirical formula to give pressure loss. The flow of gas and particles in this cyclone separator is measured by a cylindrical Pitot tube and glass model cyclone. From these experiments, it has been found that the greater parts of gas flow go out from 8-30 m/m lower section of inside cylinder, and in this section particles rotate horizontally. And circular velocities of gas flow consist of three parts. Pressure differences between the entrance and the exit of cyclone separator are almost made of centrifugal force of rotating flow aforesaid, this is [numerical formula] We modified the above equation by experimental data, and have obtained the following empirical formula on pressure drop : [numerical formula] where C is an experimental friction factor about 1.73-2.42.View full abstractDownload PDF (1154K) -
Tomosada JOTAKI1954 Volume 20 Issue 97 Pages 611-616
Published: September 25, 1954
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSAccording to particle flow in glass model cyclone separator, greater parts of gas flow go out from 8-30 m/m lower section of inside cylinder. As the axial momentum of particles balances with upward force of exit gas, particles retate horizontaly in this section which plays an important role on pressure drop and separating efficiency. Particles in this type of cyclone separator are separated between the guide vane exit and the rotating section mentioned above. In this region, particles move radially towards outside cylinder wall. Therefore, we get the following equation for minimum diameter of particle separated.[numerical formula] Furthermore many experimental data are able to be interpreted by this equation. From these experiments, characters on this type of cyclone separator are ascertained that pressure drop has no concern with mixture ratio and always is equal to that of gas only, and separating efficiency has a tendency to drop at lower velocity and mixture ratio. Dimenstions of cyclone separator which are of the most importance to its peculiarity are the ratio between in and out side cylinder diameter and the exit angle of guide vanes. Other dimenstions effect only on friction losses which are of secondary order for the loss of cyclone separator.View full abstractDownload PDF (818K) -
Tomosada JOTAKI1954 Volume 20 Issue 97 Pages 616-620
Published: September 25, 1954
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn this report, the character and flow of particles for some varieties of guide vane type and tangential type of cyclone separator are dscribed on the experimental results. It is ascertained that axial momentum of particles are balanced with resistance of exit flow at the rotating section as stated before and this section have some effect on the character of cyclone separator. Finally, it is also known, from comparative experiment between the guide vane type and the tangential type, that the former is more profltable on the point of pressure drop, while on the separating efficiency the latter is more competent.View full abstractDownload PDF (906K) -
Sadaji YAMASHITA1954 Volume 20 Issue 97 Pages 620-625
Published: September 25, 1954
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn my former report, I studied on the fundamental mechanism of abrasion of the Pelton wheel's backet due to the fluid with sand particles, and reported on the relation between the radius of curvature of the semicircular section of the backet and the static pressure of the flow water and the wear. Sucecssively I studied on this mechanism of abrasion of the backet. In this report, the second one, I report on the relation between the radius of curvature, the velocity of the flow water and wear, and put the first and second report togetherView full abstractDownload PDF (1330K)
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