308 液体窒素注入による過熱液体の加速性能向上に関する実験的研究(流体工学II)(オーガナイズドセッション(a)材料力学・材料強度に関する新展開)

概要

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Experiments injecting liquid nitrogen into the water jet, which focused on their differences between both of boiling temperatures, were carried out to improve the thrust from nozzle water flow. Effects of jet acceleration were evaluated by means of the measurements of thrust loads added on the convergent-divergent nozzle connecting with or without the parallel pipe submerged into the water tank. The characteristics of liquid-vapor two-phase nozzle flow appeared to be somewhat compressible fluid because of the explosive vaporization of liquid nitrogen, so that considerable increment of water acceleration at the part of divergent region of nozzle resulted in apparently higher thrust by exhaust jet from the nozzle.
一般社団法人日本機械学会の論文
2000-09-25