AM06-24-004 回転型レオメータ内の溶融樹脂の流動解析(非ニュートン流体(1),一般講演)

概要

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We can see frequently that the specimen of a polymer melt protrudes from the jig when we measure the rheological characteristics of polymer melts by use of rotational-type rheometers such as parallel plate type and cone & plate one. To clarify the effect of this protruding part of the specimen on the measurement value of rheological data, we tried to evaluate the rotational-type rheometer by the non-isothermal viscoelastic flow simulation using the finite element method. The shear viscosity in a steady-state increases with the protruding part size of the polymer melt specimen at the same shear rate. While, the average of absolute deviation in the primary normal stress difference between the estimated value from the simulation results and the data from the PTT model is almost independent of the size of the protruding part. The above tendencies are almost independent of the kind of jigs in rotational-type rheometer.
日本流体力学会の論文
2006-09-05