横型エジェクターのスロートにおける気液2相流と死空間 [in Japanese] Gas-Liquid Two Phase Flow and Dead Space in the Throat of a Horizontal Ejector with Liquid Jet [in Japanese]
Access this Article
Search this Article
液噴射横型エジェクターのスロートにおける気液2相流の流動様式と死空間の形成との関係を実験的に検討した.スロート内部の流動様式は気泡発生および気液の混合状態により, 概ね3種類に大別できる。エジェクターの吸引室内の圧力, <I>P<SUB>s</SUB></I>, と主要操作因子との関係を単孔および多孔ノズルに関し実験的に検討した結果, 実測値を±5%の精度で推算できる相関式を得た.また, スロートでの気泡発生位置, <I>L<SUB>c</SUB></I>, と主要因子との関係を検討した結果, 単孔および多孔ノズルに関する実測値を±25%の精度で推算できる2つの相関式も得た.さらに, 流動状態と流れ方向の静圧分布との関係を検討した.その結果, 観測した流動様式を予測できる特性曲線を得た.
The relationship between the gas-liquid two phase flow and the formation of dead space in the throat of a horizontal ejector with liquid jet was investigated experimentally.<BR>The flow modes in the throal can be classified approximately into three regimes which present a different kind of bubble formation and gas-liquid mixing. The relationship between the values of pressure in a chamber of the ejector, P<I><SUB>s</SUB></I>, and the principal operating factors was investigated in the case of single and multi nozzles. As a result, an empirical correlation by which the observed values of <I>P<SUB>s</SUB></I> can be predicted within an error of ±5% was obtained.<BR>The relationship between the start points of bubble formation in the throat, Lc, and the operating conditions was also investigated. As a result, two empirical correlations by which the observed values of <I>L<SUB>c</SUB></I> can be predicted within an error of ±25% were obtained for single and multi nozzles.<BR>Moreover, experimental data were investigated from the view point of the relationship between flow pattern and longitudinal distribution of the static pressure. As a result, a characteristic curve by which the observed flow patterns can be predicted was obtained.
- Chemical engineering
Chemical engineering 22(4), 777-785, 1996-07-10
The Society of Chemical Engineers, Japan