TY - GEN
T1 - Pressure recovery characteristics of diverging mixing tubes for ejector-jets
AU - Kitamura, Eijiro
AU - Tomioka, Sadatake
AU - Sakuranaka, Noboru
AU - Watanabe, Syuichi
AU - Masuya, Goro
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Pressure recovery characteristics of diverging mixing tubes were investigated. The total pressure at the exit of the diverging mixing tubes decreased when the diverging angles increased. More than 50% of the total pressure loss was observed in our experimental results. The flow fields in the diverging mixing tubes were investigated in numerical simulations. It was found that energy distributions in the diverging mixing tube agreed with those in the constant-area tube with in 1 kJ. The transformation of the energy with the increase of the cross-sectional area was controlled in the diverging tubes. Based on this numerical result, a one-dimensional model to predict the total pressure loss was proposed. The analytical results obtained by the one-dimensional model were compared with the experimental and numerical results. Good agreements within 15% with the experimental results were obtained.
AB - Pressure recovery characteristics of diverging mixing tubes were investigated. The total pressure at the exit of the diverging mixing tubes decreased when the diverging angles increased. More than 50% of the total pressure loss was observed in our experimental results. The flow fields in the diverging mixing tubes were investigated in numerical simulations. It was found that energy distributions in the diverging mixing tube agreed with those in the constant-area tube with in 1 kJ. The transformation of the energy with the increase of the cross-sectional area was controlled in the diverging tubes. Based on this numerical result, a one-dimensional model to predict the total pressure loss was proposed. The analytical results obtained by the one-dimensional model were compared with the experimental and numerical results. Good agreements within 15% with the experimental results were obtained.
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M3 - Conference contribution
AN - SCOPUS:33947257872
SN - 1563478269
SN - 9781563478260
T3 - A Collection of Technical Papers - 14th AIAA/AHI International Space Planes and Hypersonic Systems and Technologies Conference
SP - 715
EP - 725
BT - A Collection of Technical Papers - 14th AIAA/AHI International Space Planes and Hypersonics Systems Technologies Conference
T2 - 14th AIAA/AHI International Space Planes and Hypersonics Systems Technologies Conference
Y2 - 6 November 2006 through 9 November 2006
ER -