1412 コロイドのオリフィス流れ安定化効果 : 流路寸法への依存性(S30-2 複雑流体の流動現象(2),S30 複雑流体の流動現象)

概要

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The flow fluctuation of an aqueous colloid through a small orifice was measured; the solution included fine particles of approximately 100nm in diameter. Colloids of 1% and 2% volume fraction were investigated using two types of flow channels. In these volume fractions, the surface potential of the particles were composed of electro-static repulsions and a van der Waal's attraction which affected flow property. In this experiment, the electro-static repulsion was controlled by the addition of salt. In the case of flow channel #1, an increase in salt concentration suppressed the flow instability. However in flow channel #2, salt concentration had no effect on the orifice flow. This experiment has shown that orifice flow stabilization effects depend on the channel dimensions.
社団法人日本機械学会の論文
2007-09-07