目的 二重円管内における非ニュートン流体の振動流について流量増加率を実験により求め, 振動の周波数と振幅および偏心率が流量増加率に与える影響を明らかにする.
成果 1) 同心二重円管において, 流量増加率は振動の周波数が大きいほど小さくなる.流量増加率と変位振幅Aの二乗との関係は, A2の小さいときは比例関係であるが, A2が大きくなると曲線の勾配がゆるやかになる.
2) 偏心二重円管において, 流量増加率を振動流流量で整理すると, ずり速度の小さいところでは偏心率により流量増加率に明らかな違いがあるが, ずり速度が大きくなると, 偏心率による違いはほとんどなくなり両対数上でほぼ一つの直線にまとめられる.

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The motion of slender body in an modelled rotor which is, in size, twice as large as the practical Toyoda BD-200 Open-End spinning rotor have been investigated experimentally. Furthermore, the equation of motion based on Shiomi's analysis was calculated numerically, and compared with the experimental results.
The results obtained were summarized as follows.
1) After the slender body leaves the exit of the transport tube, it moves toward the bottom, and then rises to the surface and at last moves rotationally toward the slide wall of the rotor.
2) The slender body collides to the slide wall of the rotor from the back of it, and then falls forward.
3) In regard to the motion of the slender body, experimental results agree well with theoretical results based on Shiomi's analysis.

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The capability of predicting the equail biaxial tensile properties of the textured yarn fabrics was discussed in the region of the tensile strength below 500 gf/cm. This value is related to the handle of the fabrics.
The textured yarn has such a good feature as the high stretchability, but this makes difficult for the calculation of the tensile properties, because the initial extension state of the yarn in the fabric is uncertain. So, we defined the initial extension state and we could calculate the equal biaxial tensile properties of the textured yarn fab rics by applying the biaxial tensile theory by Kawabata et al.
The specimens, which had nealy flexible yarns, showed a good agreement between the calculated values and the experimentals. But, we also found that the bending rigidty of the yarns in the fabric played an important role when we calculated the tensile properties of the fabrics.

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The relation between the hydrophilic properties of the textile materials and the microclimate within clothing on the simulator has been examined. The results are summarized as follows :
(1) Knitted fabrics of cotton, wool, polyester and acryl show different microclimate within clothing even if the degree of moisture vapor transmission and the degree of air permeability are almost the same. The microclimate within clothing can not be explained well by the moisture vapor transmission and the air permeability.
(2) The relative humidity within clothing can not be explained by the water absorption.
(3) The relative humidity within clothing is influenced considerably by the moisture absorbing quantity and balance of the absorption and desorption properties.
Hydrophilic properties of various kinds of textile materials are as follows :
Cotton : Fast in moisture obsorbing speed and much in moisture absorbing quantity but small in moisture breathing out quantity in relation to moisture absorbing quantity. High in water absorption.
Wool : Higher than cotton in moisture absorbing quantity and moisture breathing out quantity but no water absorption.
Polyester : Has neither hygroscopicity nor water absorption.
Acrl : Low in hygroscopicity but rather high in water absorption.
As is obvious from the above, it is difficult from the aspect of the microclimate within clothing to manufacture ideal clothing material from a single material.
Accordingly, it is advisable to have a good combination of textile material and fabric construction.

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