Thermal conductivity values were computed for solid media in which spherical voids were distributed, taking into account combined conduction and radiation heat transfer in voids. Thus, Eucken's formulae, which stands for conductive thermal conductivities, was modified for including radiant contribution.
For silicious marl and alumina having voids of average diameter 0.3 mm the thermal conductivities were measured in the range of 100 to 1, 000°C, although radiant contribution was insignificant. The experimental data were compared with theoretically compated results.

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Experiments were made on rate of heat transfer from a sphere and a cylinder in sinusoidally vibrating air. Spheres used were of diameters sized d=0.110, 0.243, 1.92 and 3.16cm. Cylinders used were of diameters sized d=1.0, 1.5, 2.5cm and the ratios of the length L to the diameter d of cylinder were 1.0 and 2.0.
The ratio of amplitude of vibrating flow a to the diameter a/d ranged from 10^-2 to 9, and the experimental frequency ƒ(=ω/2π) ranged from 10 to 90 cycles per second. The difference of the temperature between surface of body and air ranged from 7.8 to 57.5°C.
The experimental correlation between Nusselt No.based on amplitude a, and streaming Reynolds No., a²ω/υ was
Nua=k·Rea^0.7 K=d^-0.75

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The numerical solution of heat transfer to Newtonian fluids in Laminar flow in concentric annuli was obtained under the conditions of a constant temperature inner wall and an insulated outer wall, taking into account the temperature-dependency of viscosity and density. The solution was compared with the ana'ytical solution based on the extended Leveque method which had been previously obtained by the authors. As a result it was found that, in the case of a great temperature-dependency of physical properties, the accuracy of the extended Leveque method's solution concerning annuli was less satisfactory than that concerning tubes. Therefore the numerical solution was presented as plots of mean Nusselt number vs. Graetz number with diameter ratio r, viscosity ratio μ_ω/μ₀ and Gr_ω/Re_ω as parameters. The numerical solution was in good agreement with the experimental data for two different diameter ratios κ.

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The drop formation from single nozzles at high nozzle velocities was studied in liquid-liquid systems experimentally. Distilled water was used as continuous phase and four organic liquids such as carbontetrachloride, nitrobenzene, tetraline and furfural were used as dispersed phases. The five nozzles having the inside diameter of 0.099cm-0.262cm were used.
The nondimensional drop formation curves in which nozzle velocities were normalized byl (the nozzle velocity producing maximum interfacial aria) and drop sizes by dpm (the drop size at V_o=V_oM) were proposed in V_o>V_oM using Bond number (=d_o²gΔρ/σ) as a parameter. The size distributions of liquidliquid systems in V_o/V_oM>2 were found to be expressed by the upper limit equation proposed Mugele and the method of evaluation of the three parameters was proposed.
Using the nondimensional drop formation curves (V_o>V_oM) and the chart of the preceding report (V_o=V_oM), the drop sizes were found to be evaluated precisely in wide velocity ranges.

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Propane-propylene mixtures were pyrolyzed in a flow reactor at temperature near 900°C and atmospheric pressure with large amount of hydrogen dilution. Under these experimental conditions, the temperature distributions in the direction of reactor axis were highly nonuniform.
To obtain Arrhenius kinetic parameters of propane and propylene decompositions in this system, the experimental results with low conversions were analyzed with “Effective temperature method”. From the relation between propane-propylene ratio in feed and these decomposition rate constants at. 900°C, it was shown that the propane decomposition was inhibited by the addition of propylene and reversely the propylene decomposition was accelerated by the addition of propane.

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The experiments of propylene pyrolysis were carried out in a flow reactor at high temperature (800-1, 000°C) and atmospheric pressure, in the presence of large amount of hydrogen. Under these experimental conditions, the axial temperature distributions of the reactor were highly nonuniform and the reaction products were almost methane and ethylene.
To obtain the first order rate constants of main reactions and propylene decomposition, the experimental results with low conversions were analyzed with “Effective temperature method”.
Using such kinetic parameters obtained and a simple reaction model for propylene pyrolysis and considering temperature profiles, the exit gas compositions were calculated. The calculated values showed good agreements with experimental results in the wide range of conversion.

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The model for particle motion in turbulent pipe flow is proposed and particle eddy diffusivity and deposition velocity to the wall are calculated.
It is assumed in this model that aerosol particles move at random to radial direction under the influence of fluctuation of fluid, and in addition that transverse lift force induced by shear flow has also an effect on particle motion near the wall.
It is difficult to calculate the particle deposition velocity without serious assumption in earlier methods, while this method is largely free of the assumption.
Calculation results are in approximate agreement with experiments.

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The liquid-liquid equilibria were measured for the system acetic acid-water-methyl isobutyl ketone at the temperatures of 15°C, 25°C and 35°C. It was observed that the rise of temperature narrows the area on a ternary diagram where the equilibrations of these three liquid components give two liquid phases mutually immiscible and that the rise of temperature tends to decrease the solubility of methyl isobutyl ketone in water. The liquid-liquid interfacial tensions between the water and the ketone phase of equilibrium compositions were measured at 25°C and the logarithmic values of them were found to be correlated, linearly with, for instance, the weight fraction of acetic acid in the ketone laver.

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