Numerical study of unsteady high enthalpy flow in an expansion tube

Kazumasa Kitazono, Masayuki Takahashi, Naofumi Ohnishi, Hideyuki Tanno

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Unsteady flow dynamics driven in an expansion tube was numerically reproduced by solving the axisym-metric compressible Navier-Stokes equations. The adaptive-mesh-refinement (AMR) technique was used to suppress a carbuncle phenomenon in the expansion tube. A numerical instability was sufficiently suppressed by utilizing a grid refined around the strong shock wave based on more than seventh level AMR. The maximum thickness of a boundary layer was estimated at approximately 16.5% of a radius of the expansion tube in a viscous flow. However, a speed of the shock wave obtained in the simulation was higher than measurements. The cause of the discrepancy was suspected for the high-temperature real-gas effect in the experiments.

本文言語English
ホスト出版物のタイトルAIAA Scitech 2019 Forum
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN(印刷版)9781624105784
DOI
出版ステータスPublished - 2019 1 1
イベントAIAA Scitech Forum, 2019 - San Diego, United States
継続期間: 2019 1 72019 1 11

出版物シリーズ

名前AIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
CountryUnited States
CitySan Diego
Period19/1/719/1/11

ASJC Scopus subject areas

  • Aerospace Engineering

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