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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 24, Issue 141
Displaying 1-11 of 11 articles from this issue
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Kenzi ISHIWATARI1958 Volume 24 Issue 141 Pages 271-272
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSDownload PDF (445K) -
Joji YAMAGA1958 Volume 24 Issue 141 Pages 273-277
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSWe attempt to investigate a problem of laminar boundary layer on rotating bodies of revolution in compressible flow such as spinning projectiles in the air. These three-dimensional boundary layers which appear in this paper are consisted of the thermal boundary layer and velocity boundary layers in meridian and in rotational directions about the rotating body of revolution. Recently, velocity boundary layer calculations on a rotating body of revolution in uniform incompressible flow were treated by H. Schlichting in Ing. Archiv Vol. 21, No. 4 (1953). Present paper is an extension of the H. Schlichting's investigation to the compressible case and an approximate integration of the momentum equation of transformed compressible co-ordinates using Karman-Pohlhausen approximate method. As a result, we obtain the distributions of the boundary layer thickness and determine the effects of the rotation and compressibility on the separation point. As an example of this method of calculation, we treat a rotating sphere in compressible flow and determine the position of separation point as a function of rotating velocity and Mach number of uniform flow.View full abstractDownload PDF (618K) -
Syusuke IIDA1958 Volume 24 Issue 141 Pages 278-282
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSAs shown in Fig. 1, when a cylinder, which is rotating around its own axis O' with an angular velocity Ω, revolves around a fixed axis O with a constant angular velocity ω, the stream function Ψ'is Ψ'(γ', α) where α=θ-ωt'-π/2. In this case the equation of motion of fluid is expressed by Eq. (3) and in non-dimensional form, by Eq. (4). Now we assume Ψ as Eq. (8) and determine 16 unknown coefficients as satisfy Eq. (4) and the boundary conditions (5) and (6). That is, from Eqs. (13)∼(16), we determine A1, A3, B2, B4 neglecting A2, A4, B1, B3 which are small comparing with the others, and then determine A2, A4 B1, B3 from Eqs. (11), (12), (17) and (18). And the other coefficients can be determined from Eq. (9). Some numerical examples are shown in the Tables and the Figures, and the experimental results are also shown in the photographs.View full abstractDownload PDF (933K) -
Syusuke IIDA1958 Volume 24 Issue 141 Pages 283-288
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn the previous and another reports, we obtained the stream functions for the eccentric rotational motion of a cylinder in fluid. In this report, from these results we calculate the pressure distributions on the surface of the cylinder and the resultant force. The pressure distributions for the motion in the infinitely wide region (Case A) are expressed by Eq. (4) and for the motion in the cylindrical vessel (Case B), by Eq. (12), and some numerical examples are shown in Fig. 1 for Case A and in Fig. 5 and 6 for Case B. The resultant force PL' acting towards the direction that increases the eccentricity, is expressed by Eq. (8) for Case A and by Eq. (22) and (25) (when ri/r0 is nearly equal to 1) for Case B. Figs. 7 and 8 show the above results respectively for ω/Ω=1 (forward precession) and for ω/Ω=-1 (backward precession). Also we calculate the attached moment of inertia which is shown in Eqs. (30) and (31), and in Fig. 12.View full abstractDownload PDF (709K) -
Yukio TOMITA1958 Volume 24 Issue 141 Pages 288-294
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe author studied the law of similarity with respect to the flow of non-Newtonian fluids in pipe lines by using the equations of motion. Secondly, the Fanning's formula of pressure losses in pipe lines was extended to the non-Newtonian flow. Moreover, the turbulent coefficients of resistance were evaluated. When the coefficients of resistance and the Reynolds number in a wider sense are used, the characteristics of non-Newtonian flow in pipe lines are approximately represented equal to those of Newtonian flow.View full abstractDownload PDF (857K) -
Kiyoshi YAMAGATA, Kaneyasu NISHIKAWA, Michihiko KAWANO1958 Volume 24 Issue 141 Pages 295-301
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn the exhauster that feeds the boiler furnace with fuel in the mill, the blades of the exhauster wear out violently due to the pulverized coal-air mixture treated in it. This wearing sometimes affects the rate of boiler operation. As a countermeasure against this wear phenomenon, it is more effective to adopt lacerated blades instead of common straight blades than to change the material of blades. This report aims to provide a basis for wear-proof measure by grasping the motion of the pulverized-coal in the exhauster. The experiment was carried out using a one-tenth scale model fan, and the motion of the powder in the blade-wheel was photographed by the microflash luminescent source, using flyash and sand for the test powder. As the result of the above experiments, the following conclusions were drawn : i) In case of the straight blades, most of the powder flows along the blade surface. ii) In case of the lacerated blades, the powder flows from the tips of lacerated teeth describing a parabolic line, but hardly touching the blade surface. By the foregoing experiments, the authors could explain qualitatively the reason why the lacerated blade is a success as an anti-wear measure.View full abstractDownload PDF (1689K) -
Sadaji YAMASITA1958 Volume 24 Issue 141 Pages 302-306
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe auther had described up to his latest report on the influence of sand particles contained in the fluid inflicted upon the abrasion of metals to the fluid with sand particles. In this report, he refers to his study on the influences of the finishing condition of metallic plate surface. The working direction file on the final finishing surface of metal plate is set so as it has an angle of 90°to the flowing direction of the fluid with sand particles. And the finishing conditions are : (1) the state of casting black sheet (2) bastard file finish (3) dead-smooth file finish (4) Emery paper 5 finish (5) Emery Paper 3 finish (6) Emery Paper 1 M finish (7) Emery paper 0/2 finish (8) Emery paper 0/4 finish (9) Emery paper 0/6 finish (10) Buff finish. Surface conditions of metallic plates just before and after the experiment of abrasion were examined with a surface tester and surface roughness was measured.View full abstractDownload PDF (826K) -
Tsuneyo ANDO1958 Volume 24 Issue 141 Pages 307-311
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSStudy on Voith-Schneider-Propeller is made much complicated by several factors even in two-dimensional treatment. When the chord length is small, however, the propeller may be regarded as composed of blades, each individually moving along a trochoid relative to uniform flow (quasi-steady state, interference disregarded), with suitable correction for advance speed. The author tried to make some account on the action of the propeller as two-dimensional under above principle, taking into consideration the curvature of blade path relative to the uniform flow, as well as the azimuthal location of the control point, and here is given some numerical examples. Also an application to cyclo-gyro aircraft is referred to. It is known that for air transportation purpose, the direction of blade rotation must be chosen in conformity with what sort of airfoil is used.View full abstractDownload PDF (610K) -
Tsuneo ICHIKAWA1958 Volume 24 Issue 141 Pages 312-318
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSAbout the internal gear pumps, the author calculated the ideal delivery quantity, its pulsation factor and the variation of the trapped space. And these characteristics were verified by his experiment. As a result of this research it was found clearly that the internal gear pumps are more excellent than the conventional external gear pumps in the following points, (1) the pulsations of the delivery quantity and pressure are small, (2) the variation of the trapped space is small, and there is no extreme pressure rise nor decrease in this space with no release port.View full abstractDownload PDF (995K) -
Takaichiro NANJO, Mitsuaki MURAKAMI, Naomichi HEYA1958 Volume 24 Issue 141 Pages 319-324
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSPerformance of pump with open impeller is much affected by running clearance between the impeller vane and the stationary casing. A few researches on this problem have reported in past, but most of them are reports of experiment with special models. It is not enough to estimate the performance of other open type construction pumps by those data only. In the present paper, authors report some data for estimation of the performance of open impeller construction. The results are followings : 1. Both head and quantity of a pump reduce with increasing of the ratio, running clearance / vane breadth, and the percentage of the reduction will be expressed by a function of specific speed of pumps. 2. Pump efficiency improves comparing with it of closed impeller but drops in proportional to the ratio of running clearance to vane breadth. When the running clearance increases to some value, pump efficiency is inferior to it of closed impeller construction and its limit is in range of engineering practice.View full abstractDownload PDF (845K) -
Yoshikazu SAWARAGI, Yoo YONEZAWA1958 Volume 24 Issue 141 Pages 325-328
Published: May 25, 1958
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn this paper, the authors analysed a cycling phenomenon of a real control system. As the results, after some experiments we came to the conclusion that this phenomenon was caused by a backlash in the pneumatic controller. Carrying out the analysis of the control system including this non-linear characteristic by means of the gain-phase plane, it was found that the cycling frequency and amplitude were nearly in agreement with the experimental results. By the gain-phase plane the cycling should occur when the proportional sensitivity of a Paction controller is 19.0 db, but by our experiments it occurred when the proportional sensitivity is 18.5 db. The larger the sensitivity is, the larger the frequency and amplitude of cycling.View full abstractDownload PDF (580K)
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