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Poiseuille Flow속에서의 유연한 고분자의 희석용액의 흐름

Dilute Solution of Flexible Polymers in a Rectilinear Poiseuille Flow

HWAHAK KONGHAK, December 1989, 27(6), 759-766(8), NONE
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Abstract

두 무한한 평판 사이의 rectilinear poiseuille 흐름 속에 있는 유연한 선형 고분장의 국부적인 점도를 통로중심에서부터 거리 Zc의 함수로 구했다.
이는 정상상태의 configurational distribution이 Zc에 의존하지 않기 때문에 브라운 운동항을 무시하여 얻을 수 있었다.
통로 전체의 평균점도는 통로의 폭이 증가할수록 큰 값을 가진다. 국부적인 first normal stress coefficient 역시 Zc의 함수로 구할 수 있었다. 그러나 통로의 중심에서는 그 값이 무한값을 가진다.
The local shear viscosity of the linear dumbbell polymer between two parallel plate with a rectilinear poiseuille flow was given as a function of the lateral position Zc(center of the mass coordinate of dumbbell)from the center of the channel. This was obtained by neglecting the brownian diffusion term of Zc as induced from the fact that the configurational probability distribution with respect to Zc is unchanged at steady state. The average shear viscosity is increasing by increasing channel size. But upon the critical channel size the average shear viscosity is not increasing with channel size. The local first mormal stress coefficient was given as a function of the lateral position, too. But in the center of the channel its value has a infinite value which should be corrected in the future.

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