圧力式ホモジナイザーにおける内部流れと乳化効果の研究(流体工学,流体機械)

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タイトル別名
  • Study of Internal Flow and Emulsification Effect in a Homogenizer(Fluids Engineering)
  • 圧力式ホモジナイザーにおける内部流れと乳化効果の研究
  • アツリョクシキ ホモジナイザー ニ オケル ナイブ ナガレ ト ニュウカ コウカ ノ ケンキュウ

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説明

The homogenizer is extensively used to emulsify, disperse the products in various industrial fields including: food, chemical, pharmaceutical and biotechnology. The homogenizer basically consists of a high-pressure plunger pump usually with triple plungers to minimize pressure fluctuations and a homogenizing valve with a narrow gap. However, the flow within the homogenizing valve is not clarified theoretically. If the flow pattern within the homogenizing valve could be solved, a more efficient and stabilized emulsification could be carried out. In this paper, the influence of shape modification of the homogenizing valve was investigated in the emulsification effect. The experiments using a small homogenizer are conducted. We studied the influence of the flow pattern (velocity distributions, pressure distributions, shear stress) on the drop size distribution obtained in the experiment, and investigated the relation between the average value of wall shear stress and the emulsification effect in the homogenizing valve. The flow patterns were investigated using a Computational Fluid Dynamic model of the flow in the homogenizing valve. The purpose of this paper is to clarify the effects of differences in the shapes of valves on the results of emulsification.

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