巻号一覧
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29 巻, 207 号
選択された号の論文の15件中1～15を表示しています
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岩浪 繁蔵, 加藤 宏, 山根 隆一郎1963 年 29 巻 207 号 p. 1735-1742
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーThe authors tried to develop upon the hydraulic conveyor an analytical method for the pressure drop in the pneumatic conveyor by T.Uematsu and T.kano, and obtained a formula for the pressure drop in the "hold up flow" through a horizonta1 pipe. The experimental constant η' in the formula was determined by the results of experiments in flyash and sand slurries. The resulting formulas are in a good agreement with the authors' result and other investigators' also within the errors of measurement.抄録全体を表示PDF形式でダウンロード (1155K) -
川畑 早苗1963 年 29 巻 207 号 p. 1742-1754
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーThe author performed his quantitative experiment as a part of the series of experiment for the purpose of investigating the air current when the train ran into the tunnel. To make the matter simple, he conducted his experiment, by running, through a pipe, a column made short so as it might correspond to the real length of the train. Measuring the velocities of the air currents at both the entrance and exit as well as the inside of the pipe with a hot-wire anemometer, the results thus obtained were compared with the theories, taking the influence of the boundary layer appeared along the surface of the column in consideration. And because a turbulent flow of air occurred during the experiment, it cannot be said to have achieved the perfect agreement between both the experimental and theoretical values, but it has been found that they seem to nearly agree with each other. On the other hand, the direction of the air current was checked by way of observing the inclination of pieces of paper or of taking streamline-photographs of the water flowing, and in both cases, good agreement with the theoretical values was acquired.抄録全体を表示PDF形式でダウンロード (1894K) -
沖 巖1963 年 29 巻 207 号 p. 1755-1766
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーThe present paper treats the results of experiment precisely performed on two disc valves, h' and i', having broader valve seat face. The diameter d of the valve i' is equal to the external diameter d1 of the valve seat face, that is, d=d1. Each characteristic curve for the valve i' has one discontinuous point. On the other hand the valve h' has a diameter d<d1, and on each characteristic curve for it there are two discontinuous points. The discharge Q and the lifting force P were measured, as before, at each valve lift l under a constant head H. This time, moreover, the pressure head h at the middle point of the valve seat face was measured by means of a monometer hole made there. In this way more reasonable explanation is given for the discontinuous points which appears on the characteristic curves for a disc valve with valve seated face, broader than that described in the 8th Report.抄録全体を表示PDF形式でダウンロード (1306K) -
竹中 利夫, 山根 隆一郎, 岩水 達夫1963 年 29 巻 207 号 p. 1766-1777
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーClear knowledge on the thrust of valves is necessary to discuss the stability of valves which plays an important role concerning the stability of a pipe line. In order to have the general idea of relations between the thrust and the lift, and between the discharge coefficient and the lift of common valves, we studied the characteristics of the most simplified, a circular disc valve. The flow between the valve and the valve seat is very complex. The pressure distribution over the valve surface and lifting-force were calculated analitically for various types of the flow, and examined experimentally for three kinds of disc valve. Experimental results show the correlation between the lifting-force and the discharge coefficient.抄録全体を表示PDF形式でダウンロード (1171K) -
五百井 仁, 富樫 栄1963 年 29 巻 207 号 p. 1778-1785
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーBy the use of a characteristic function introduced in the last paper, the authors obtained two new formulae, the one is that of delivery rate and the other, of effective work ratio of positive displacement pumps. Formula of delivery rate simplifies those conventionally used. By the aid of these two expressions, an advantageous contour of rotors can be designed. Some examples are shown how to construct a tooth profile for the purpose of raising both delivery rate and effective work ratio at the same time. The formulae shown here are useful for spur type and also for helical type which has toothed rotors of different radii. It may not be applicable to general transmission gears of parallel axis, unless the expressions of torque which were introduced here for gear pump might be modified.抄録全体を表示PDF形式でダウンロード (766K) -
板谷 樹, 西川 孝雄1963 年 29 巻 207 号 p. 1786-1791
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーWhen solid particles flow through the impeller of volute pump with water, the behavior is not always clear. The writers recorded photographycally the trajectories of solid particles in the impeller using a high speed camera. In this paper they show the experimental results, especially the relative velocity and its directions at the impeller exit. Moreover they show the numerical method of calculating the trajectories.抄録全体を表示PDF形式でダウンロード (813K) -
村田 暹1963 年 29 巻 207 号 p. 1792-1800
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーIn this report, the author has treated the axisymmetric flow at design point in multistage turbo-machines of various vortex types, such as the constant reaction type and the exponential type, using a similar method to that described in 1st Report. Regarding the axisymmetric flow through an axial-flow turbo-machine, the radial equilibrium theory and the actuator disc theory have been expounded, but the effects of impeller breadth and blade shape have not been considered in these theories. The method described in the present paper eliminates the above mentioned disadvantages. Numerical examples are shown comparing with the results calculated on the basis of the above mentioned theories.抄録全体を表示PDF形式でダウンロード (832K) -
石谷 清幹, 沖 久靖1963 年 29 巻 207 号 p. 1801-1808
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーFilm boiling of water on the horizontal rods and wires was discussed in the first report. In this paper is reported the experiments on the boiling of water at the atmospheric pressure and at higher pressures from vertical electrically heated SiC rods. The coefficients of heat transfer obtained were in agreement with those predicted by Bromley's theory when the vertical rods were short (50, 75 mm in length), but were not in agreement when the vertical rods were longer (125, 165, 225 mm in length). The heat transfer coefficient measured increased with the rise of pressure. The empirical equation obtained was as follows : [numerical formula] where j=0, l=0.9, m=1/4, n=1/4 for shorter rods, j=0, l=0.5, m=1/3, n=1/4 for longer rods and j=1/4, l=0.5, m=1/3, n=1/4 for pressures higher than the atmospheric pressure.抄録全体を表示PDF形式でダウンロード (1454K) -
坪内 為雄, 佐藤 千之助1963 年 29 巻 207 号 p. 1809-1815
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーWhen a small particle or a fine wire is heated in low speed air stream, the effect of natural convection on the heat loss is important. A typical example is the use of a thermistor or a hot-wire anemometer for measuring air velocities. In this case, the effect of the direction and the magnitude of air flow together with natural convection effect must be taken into consideration. The present paper reports the results of measurements of heat transfer coefficients by forced convection at very low air velocities (0.01∼0.5m/s) in varied flow directions. As previously reported, the specimens were small bead-type thermistors, specially prepared for this experiment. The experimental procedures have been remarkably simplified by the use of thermistors. The results have been expressed by experimental formulas in the same form as in the previous paper.抄録全体を表示PDF形式でダウンロード (1048K) -
笠原 英司, 蓮井 淳, 江森 康文, 飯吉 厚夫1963 年 29 巻 207 号 p. 1816-1824
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーThis paper deals with experimental studies of plasma-jet. In the first part of this paper, two spectroscopic methods were employed to measure the temperature of plasma-jet, whose results coincide farly well for the range of our observation. In the second part, a thermo-fluid dynamical method was used to get jet temperature and several fluid dynamical properties by measuring the thrust and pressure at the exit of jet nozzle. The heat transfer from plasma-jet to rigid wall was also observed.抄録全体を表示PDF形式でダウンロード (1178K) -
斎間 厚1963 年 29 巻 207 号 p. 1825-1834
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーThe burner with a mixing roll at an end of partition wall between fuel gas and air supplying ports was used. The fuel gas was flowing along the side wall of the burner, and air was supplying parallel to the fuel gas. The fuel gas was diffused to the air quickly by the existence of the mixing-roll. A diffusion flame in this burner was stabilized on a wake of the roll. The burning mechanism in this burner was determined. The flames have different shapes which were stabilized at each fixed flow situations. The fuel gases were sucked into the air flow as soon as flowed out the fuel port, and reacted soon, in case of the turbulent flame. A turbulence intensity of the flow was increased by the existence of flame, so that eddy diffusions acted much more rapidly than the flow that is under the same conditions without flame. The diffusion velocity could be so high by the mixing roll that the burning rate of this burner were determined by burning velocity of fuel-air mixture only under a certain conditions.抄録全体を表示PDF形式でダウンロード (1766K) -
石田 穣, 高橋 恭郎1963 年 29 巻 207 号 p. 1835-1844
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーWe experienced the clogging of tilting burner for CE type boiler at Ainoura Station, when trying on Miike Bituminous Coal. So, we reproduced and investigated this phenomenon on pulverized coal fired test furnace, and found that this was owing to the hard caking property of this coal and that this was sufficiently avoidable by using a tilting burner with air cooling nozzle. This new type coal burner was adapted to No.1 boiler at Shinminato Station. This boiler has been fired with Miike Bituminous Coal for about 2 years. This new type coal burner has been working well and there has been no trouble with the burner.抄録全体を表示PDF形式でダウンロード (1817K) -
西村 肇1963 年 29 巻 207 号 p. 1844-1855
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーLow frequency oscillation encountered in combustion system involving entrance resistance, exit resistance and capacity, was studied experimentally as well as theoretically and its nature was clarified. Various factors influencing on the frequency and the amplitude of oscillation, for example, entrance and exit resistance, capacity, shape of burner and its position, were examined experimentally and from these results the author concludes that this oscillation is nothing other than velocity feedback self exciting oscillation. And then, a photografical investigation has shown that the principal mechanism of the oscillation lies in the interaction of turbulence generation and heat generation. In theoretical investigation, hypothesis was raised on the detailed mechanism of the above interaction ; the hypothesis was combined with the equation of unsteady aerothermo-chemistry, so as to yield "velocity transfer function of combustion tube". This transfer function was used to examine the possibility of generation of self exciting oscillation in the system. The theory compares qualitatively well with experimental results.抄録全体を表示PDF形式でダウンロード (2029K) -
長尾 不二夫, 池上 詢, 宮下 直也1963 年 29 巻 207 号 p. 1856-1862
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーThis paper is a sequel to the investigation on effects of connecting passage area of divided chamber type Diesel engine on knock intensity : The rates of pressure rise in the auxiliary-and the main chambers of a swirl chamber type engine were measured from indicator cards under a light load. The test results are summarized as follows : Above 1000 rpm of the engine speed, the rate of pressure rise in the swirl chamber and the amplitude of detonation-like pressure oscillation rapidly augment as the area ratio of the passage is reduced. The relationship between rates in the main chamber and in the swirl chamber can be classified into three stages according to the ratio. In the smallest ratio range the gas flowing out from the swirl chamber is delayed by the connecting passage, thus resulting in a relatively low rate of pressure rise compared with that in the main chamber. In the intermediate area range the rate in the main chamber is nearly equal to that in the swirl chamber. The larger area ratio gives higher rate than in the swirl chamber because of combustion in the main chamber due to easier outflow of unburned fuel.抄録全体を表示PDF形式でダウンロード (1061K) -
久我 修1963 年 29 巻 207 号 p. 1863-1865
発行日: 1963/11/25
公開日: 2008/03/28
ジャーナル フリーPDF形式でダウンロード (411K)
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