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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 21, Issue 105
Displaying 1-15 of 15 articles from this issue
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Syozo MATSUSHIRO1955 Volume 21 Issue 105 Pages 319-320
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSDownload PDF (475K) -
Tokio UEMATU, Keiji HATTA, Sadao NAKAMURA1955 Volume 21 Issue 105 Pages 321-324
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe variational method is used to calculate the pressure gradient in the region near the entrance of a circular pipe in the case of laminar flow. The functional of the velocity distribution is chosen, whose stationary value gives the pressure gradient along the axis of the pipe, and the condition that the functional takes the stationary value coincides with the equation of motion. The velocity distribution is assumed to be the form of generalized parabolic arc. The result is that the correction of Hagenbach is 2.25 (ρu^-2/2), where ρ is the density of fluid and u^- is the mean velocity in the pipe. The velocity distribution also coincides fairly well with Nikuradse's experimental result.View full abstractDownload PDF (510K) -
Yasusi NIITSU, Meizi KURAHASHI1955 Volume 21 Issue 105 Pages 324-329
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe pipe line nets which have two parallel main pipes combined with many branch pipes, are widely utilized in the industrial field, and it is often required to distribute the flow uniformly through each branch pipe. In this paper, a method of flow control is investigated for this pipe line system, and we have derived a calculating formula of controled resistance value to make the flow equation satisfy in parallel or counter flow type pipe line. And we used the orifice as the controlling resistant body to be inserted in the branch pipe and observed its effect in comparison with the experiment and the theoretical calculation.View full abstractDownload PDF (728K) -
Shigeo KUBOTA1955 Volume 21 Issue 105 Pages 329-335
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSA simple method for calculating the flow around the straight wing lattice with high camber as the case of turbine blade is here developed. In this method the wing lattice with no thickness, which is quite similar to the skeleton line of given blade section, is calculated at first. And using this result, pressure distribution around the given blade section is found by the principle of thin aerofoil theory. A numerical example shows good agreement with the experimental result.View full abstractDownload PDF (906K) -
Shigeo KUBOTA1955 Volume 21 Issue 105 Pages 335-342
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThis original papers are consist of three short paragraphs. In the first paragraph, according to the assumption by F. Weinig, a method for calculating the pressure distribution around the leading edge of cascades is developed, and the forms of leading edge are discussed by some numerical examples. In the second, the additional losses and the deviation of outlet flow angle owing to the blade thickness at the trailing edge are researched experimentally, and in the last paragraph, an example of strict solution for β2-t/L curve in cascades (β2 : direction of outlet flow, t/L : pitchchord ratio), which is composed of some specially formed blade section, is derived theoretically.View full abstractDownload PDF (957K) -
Atsushi MIYADZU1955 Volume 21 Issue 105 Pages 342-349
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThis paper treats the theory of a viscosity pump with spiral groove. The rotating disc is in contact with the bed plate having the groove in shape of spiral. If the groove is narrow and shallow, and the liquid is viscous, the rotor is able to give the effective driving shear to the liquid, forcing it towards the centre of rotation. Starting from viscosity law, the equation of pump characteristics have been deduced, and further developed for the grooves in shape of logarithmic spiral and spiral of Archimedes. On the basis of characteristics drawn in the analysis, the optimum ratio of the radial distances of the inlet and outlet of the groove has been determined.View full abstractDownload PDF (914K) -
Hidetoshi KUSAMA1955 Volume 21 Issue 105 Pages 350-355
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn this paper, the author studied theoretically the stability of pumps and these pipe line systems, when two pumps are connected in series and parallel. To treat theoretically these series and parallel running, the theoretical means in preveous reports were modified. The results are considerably analogous to the case of single pump running. In the parallel running, however, the system containing air tank or water tank, has many dynamical freedoms, which we cannot solve generally. For the present case we intend to make it clear experimentally in the next report.View full abstractDownload PDF (732K) -
Hidetoshi KUSAMA, Shigeru TSUJI, Toshio KIGUCHI1955 Volume 21 Issue 105 Pages 355-358
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSTo verify the adequacy of the theoretical results described in the previous report, the authors studied experimentally on surging of pumping systems in series-and-parallel running. The results showed that the experimental results coinsided with the theory, and the following three conditions were essential to the occurence of the surging of pumping systems : (1) Rising characteristics of the relation between resultant head and discharg. (2) The existence of air tank, liquid tank or air chamber in pipe lines. (3) Valve which controls the pump discharge, is located after (downstrean) the air tank etc.View full abstractDownload PDF (584K) -
Atushi GOGA1955 Volume 21 Issue 105 Pages 358-363
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe design method of three dimensional flow has recently been used to multi-stage compressors. This paper establishes the theory of three dimensional-flow design and introduces what blading gains the best total efficiency. The fact that the best total efficiency is obtained by the best stage one and the least pressure losses of before and behined guide vanes, and the best blade element efficiency is obtained by a flow pattern of 50% reaction and one-half velocity coefficient, is well known. Only by the use of non-uniform pre-moving and guide vanes, all 50% reaction and mean axial velocity uniform type blading is obtained. This blading shows the best total efficiency of all.View full abstractDownload PDF (657K) -
Atsushi GOGA1955 Volume 21 Issue 105 Pages 364-367
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSWhen blade pitch-chord ratio becomes small, the fluid outlet angle of the moving and guide vanes may be constant throughout all the flow ranges. This paper calculates the off-design performance of an axial-flow blower assuming the outlet angle be constant. Result is that the stage characteristics can be easily assumed by the whirl coefficient of mean geometrical radius of design flow and that the change of blade tip turning angle is greater than the root. This shows a reason why surging is caused by the reverse flow of a blade tip radius.View full abstractDownload PDF (530K) -
Sachio HARADA, Susumu ICHIGE1955 Volume 21 Issue 105 Pages 367-373
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThis article is a report of our experiments regarding how much the pressure loss in cyclone dust separator may be changed by different proportions of the construction. In these experiments we have obserbed the influences on pressure loss by the different proportions of the main parts in the standard type of cyclone ; i. e. by the different cross-sectional areas of inlet slot, by the different diameters of exit pipe, by the different hights of cyclone body, and by the different lengths of exit pipe. The experimental formulae has become as follows : [numerical formula] Where Δp=total pressure loss in cyclone, ui=linear speed in inlet slot, R=Reynold's number in inlet slot=[numerical formula], b×h=cross sectional area of inlet slot, D=diameter of cylindrical portion of cyclone body, d=inside diameter of exit pipe, H=effective length of cyclone body, l=length of exit pipe, r=specific weight of fluid gas, g=accelaration due to gravity.View full abstractDownload PDF (853K) -
Sumiji FUJII1955 Volume 21 Issue 105 Pages 374-377
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe paper deals with the possibility of generating sustained water-hammer by a fluttering valve which statically increases its opening with the increase of the pressure in the up-stream and which is usually expected to make a system rather stable, contrarily to the valve in the author's previous papers which decreases its opening with the increase of pressure in the up-stream. When the frequency of pressure variation in the up-stream is slightly higher than the natural frequency of the valve, the phase of the motion of the valve treated here is almost reversed relatively to the phase of pressure variation, and the amplitude of the valve is considerably large. This means that the valve can act as a negative resistance for pressure waves having frequencies slightly higher than its natural frequency, if only the damping of the valve motion is sufficiently small.View full abstractDownload PDF (613K) -
Kazunari KOMOTORI1955 Volume 21 Issue 105 Pages 377-382
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThis paper gives the results of experimental research on leakage of air through straight through type labyrinth packing. The generall relations between leakage, number of constrictions, pitch of constrictions and pressure ratio are given in grahycal forms. These results substantially agree with the theoretical equations that have been reported, though the factor of number of constrictions is in need of correction. Moreover the carry-over factor is defined. This factor is a function of the ratio of the pitch of constrictions to clearance.View full abstractDownload PDF (848K) -
Takefumi IKUI1955 Volume 21 Issue 105 Pages 383-386
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSDownload PDF (664K) -
Eiji KASAHARA1955 Volume 21 Issue 105 Pages 386-388
Published: May 25, 1955
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSDownload PDF (716K)
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