SUCRA(さくら: Saitama University Cyber Repository of Academic Resources)は、埼玉大学に在籍する研究者の学術雑誌論文、紀要論文、科学研究費補助金成果報告書、学位論文、研究発表プレゼン資料などを登録し、広く世界に発信しています。 埼玉大学に在籍する皆様は、著作物をSUCRAを通じて発信することができます。詳しくは「成果物の登録方法」をご覧ください。
Numerical Simulation of Compressible Viscous Two-Phase Flow with Condensation : 2nd Report, Analysis with Semi-Phenomenological Droplet Model and Vibrational Nonequilibrium Condition
Graduate School of Science and Engineering, Saitama University
雑誌名
日本機械学會論文集. B編
巻
62
号
593
ページ
166 - 172
発行年
1996
年月次
1996-01
出版者名
社団法人日本機械学会
ISSN
03875024
抄録
Two-dimensional compressible viscous flow with SF_6 condensation have been calculated with a 3rd-order MUSCL-type TVD scheme in the present study. The calculations are based on either the classical condensation theory by Becker-Doring or a semi-phenomenological droplet model, i. e., Dillmann-Meier's theory. The difference between results of these two kinds of condensation theory was discussed in detail. Comparing those results, it is found that the Dillmann-Meier theory gives an accurate prediction of the condensation onset in a supersonic nozzle without determining the surface tension free parameter. Calculations taking into account the vibrational nonequllibrium effect of SF_6 were also carried out. It was shown from the result that the onset of nucleation varied by taking into account the effect of vibrational nonequilibrium. In particular, the translational temperature became lower in the case of vibrational nonequilibrium than in other cases, because the vibrational relaxation process was almost frozen. In addition, the position of onset and the growth process of SF_6 clusters were obviously affected by the vibrational nonequilibrium process.
SF_6凝縮を伴う超音速ノズル内流れの数値計算 : 第2報, 半現象論モデル及び振動エネルギー非平衡計算に基づく解析
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