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1970 Volume 34 Issue 11 Pages
1125-1126
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Shigeki Toyama, Chisato Yoshioka
1970 Volume 34 Issue 11 Pages
1127-1133
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Yukio Ichikawa
1970 Volume 34 Issue 11 Pages
1133-1138
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Fuminori Yoshida
1970 Volume 34 Issue 11 Pages
1139-1146
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Kiyoshi Tomita
1970 Volume 34 Issue 11 Pages
1146-1151
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Shigeki Toyama
1970 Volume 34 Issue 11 Pages
1152-1156
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Koreatau Miyahara, Hideo Sadotomo
1970 Volume 34 Issue 11 Pages
1157-1162
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Takeshi Matsuura
1970 Volume 34 Issue 11 Pages
1162-1168
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Naoya Yoshioka, Kitaro Adachi, Shoji Yoshikawa
1970 Volume 34 Issue 11 Pages
1169-1176,a1
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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A theoretical analysis for the laminar flow past a flat plate of fluids of Ostwald-de Waele model is presented. The main problem which is considered is how to predict the drag for the flows at the middle range of the generalized Reynolds number (10≤
Re*≤1000) Extending the Kuo theory for Newtonian fluids to this problem, the following relation between drag coefficient and Reynolds number is obtained.
CD=A(
n)
Re*
-1/(n+1)+
B(
n)
Re*
-2/(n+1)where A (
n) and
B (
n) are given in Figs. 4 and 5 for 05≤
n≤1.0.
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Terukatsu Miyauchi, Morihide Yokura
1970 Volume 34 Issue 11 Pages
1176-1185,a1
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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The mechanisms of nucleate boiling heat transfer have been studied experimentally and analytically for the boiling regime of medium heat flux (q≤2.10
5 kcal/m
2hr) under atmospheric or subatmospheric pressure. Heat-transfer and mass-transfer coefficients are measured simultaneously for the boiling liquid film by using the diffusion current method for a platinum heat transfer surface. The rate determining step for heat transfer is found in the transfer process of heat through the heat-transfer film on the heating surface. Oscillative local motion of liquid induced by cyclic formation and detaching of vapor bubbles on the heating surface is considered responsible to determine the thickness of the heat-transfere film. With this concept, Eq.(25) is obtained to correlate the experimental boiling film coefficients available so far.
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Atsushi Ikari
1970 Volume 34 Issue 11 Pages
1185-1192,a1
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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The simple distillation of the aqueous solutions of ethanol containing a minute amount of 1-butanol has been carried out, and the composition curves of the distillate and residue in the still has been obtained.
On a devised model of the batch still and some assumptions, the equations have been derived for calculating the ratio of the distillate to the charge and the compositions of the distillate and residue in the still.
The calculated results for the solutions containing a minute amount of 1-butanol were presented.
The form of the composition curve of 1-butanol is principally determined by the ethanol concentration in the charge. The effects of partial condensation and steam blowing into the still are discussed.
The observations are in good agreement with the calculated results.
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Ikuho Yamada, Hideo Saito
1970 Volume 34 Issue 11 Pages
1192-1198,a1
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Petlyuk et al. proposed the new types of distillation system for multicomponent separation, and from experimental results and approximated calculation using Gilliland's correlation and Underwood's equation as well-known, they showed that the new system requires lower heat duty than the ordinary distillation system.
However, the rigorous calculational procedure for his system were not illustrated. in the present paper, authors have shown the useful convergence method and rigorous calculational procedure by matrix method for the romoles distillation system proposed by Petlyuk et al., and shown that requiredheat duty can be reduced about 20% compared to the ordinary system under the same condition, from a result of numerical example of ternary separatio
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Saburo Yashima, Yoshiteru Kanda, Hiroshi Sakamoto, Osamu Awano, Shoich ...
1970 Volume 34 Issue 11 Pages
1199-1205,a1
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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By dimensional analysis method we obtained the following relation between Bond's work index and mechanical nroperties of brittle materials
where
Wi [Kg·cm/kg] is the work index, ρ[kg/cm
3] the density,
Br the brittleness index,
St [Kg/cm
2] the tensile strength,
Y1 [Kg/cm
2] the Young's modulus, ν
1 the Poisson's ratio,
Rc the ratio of specific surface area of fractured product to the cylindrical specimen and
Rt the same ratio of spherical specimen under slow rate of compression.
Dividing
Wi calculated from the above equation by 4.05×10
4 [Kg·cm/kg] we can obtain
Wi having the unit of kWh/ton. The above relation can be applied to the region of materials having the Mohs' hardness of 2 to 6.5.
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Tokuro Mizushina, Ryuzo Ito, Setsuro Hiraoka, Junkichi Watanabe
1970 Volume 34 Issue 11 Pages
1205-1212,a1
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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The temperature variations in an agitated vessel with paddle, anchor, gate and helical ribbon agitator respectively for styrene polymerization were measured, and was found that the helical ribbon was superior to the other types in the temperature uniformity effect A dimensionless number is derived from the dimensional analysis, and named “the mixing number” This is a constant which is independent of the impeller type in unifying temperature or concentration by mixing and also controls the temperature unequality in agitated vessels for heat liberatingreaction.
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Tokuro Mizushina, Ryuzo Ito, Setsuro Hiraoka, Taiichi Murata, Takeshi ...
1970 Volume 34 Issue 11 Pages
1213-1219,a1
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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“Elliptic Board” and “Elliptic Ribbon” agitators which are useful for high viscous liquid are designed and the mixing time, power, heat transfer coefficient in the agitated vessel with those agitators are measured. The performances of them are as same as those of the ordinary helical ribbon agitator. Especially, the elliptic ribbon agitator is superior to the helical ribbon agitator in mixing time, though it consumes larger power Furthermore it was found that the mixing performances of elliptic ribbon agitator could be improved by equipping lattices and also that the elliptic board agitator equipped with scraper easilly made heat transfer coefficient very large.
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Shimio Sato, Tsutao Otake, Toshiyuki Osawa
1970 Volume 34 Issue 11 Pages
1220-1226,a1
Published: November 05, 1970
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The present work intended to synthesize theoretically the effective feedforward control systems for a multistage gas-liquid reactor with recycles.
Based on a linear mathematical model it was found that the control system of which detected variables were selected so as to compensate any predicted disturbance, for example any change in gas feed concentration, eliminated unpredicted disturbances such as changes in concentrations on any stage below the detected stage. Furthermore, it was shown that without a full identification of the dynamics, the controller for the effective control system could be designed from the elemental transfer functions describing the dynamic behaviour of a controlled stage. Finally, it was drawn that as a manipulative variable a recyclic flow rate was preferable to feed flow rate conventionally employed.
Also these theoretical findings were ascertained by analogue computer simulations.
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Akihiro Iguchi, Kensi Fuse
1970 Volume 34 Issue 11 Pages
1226-1229,a1
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Solubility curve and tie lines were determined for the systems acetic acid+water+cyclohexane and acetic acid+water+n hexane at 25°C.
The concentration of acetic acid at plait point was obtained from extrapolation of the following correlation line, log xw vs.(yw-xw)/xw where x
w is acid concentration (wt. traction) in hydrocarbon layer and y
w, is acid concentration (wt. fraction) in water layer.
The data for lower concentration region were well correlated to about maximum value of y
w by Hirata's plots. log yw/(1-yw) vs. log xw/(1-xw).
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Choji Horikoshi
1970 Volume 34 Issue 11 Pages
1229-1234,a1
Published: November 05, 1970
Released on J-STAGE: October 07, 2010
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Concerning the turbulent Jets emanating from the horizontal nozzle with one or two horizontally bounded plates at the exit, we obtained experimentally the velocity decline on the Jet axis, the horizontal velocity distributions, and the horizontal breadth of the Jet, and these results were examined by those of the free turbulent jet.
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