2009年
高速振動平板間における高分子溶液の流れのマルチスケールシミュレーション(バイオ・マイクロ・スポーツの流れ 分子スケール(2),一般講演)
日本流体力学会年会講演論文集
- ,
- 巻
- 2009
- 号
- 開始ページ
- 128
- 終了ページ
- 128
- 記述言語
- 日本語
- 掲載種別
- 出版者・発行元
- 日本流体力学会
The behavior of supercooled polymer melt composed of short chains with ten beads between rapidly oscillating plates is simulated by using a hybrid simulation of molecular dynamics and computational fluid dynamics. The flow profiles of polymer melt near an oscillating plate are quite different from those of Newtonian fluid. The viscous boundary layer of the melt is much thinner than that of the Newtonian fluid due to the shear thinning of the melt. Three different rheological regimes, i.e., the viscous fluid, viscoelastic liquid, and viscoelastic solid regimes, form over the oscillating plate according to the local Deborah numbers. The melt behaves as a viscous fluid when ωΤ^R≲1, and the crossover between the liquid-like and solid-like regime takes place around ωΤ^α≃1 (where ω is the angular frequency of the plate and Τ^R and Τ^α are Rouse and α relaxation time, respectively).
- リンク情報
- ID情報
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- CiNii Articles ID : 110008459796
- CiNii Books ID : AA11567941