Structure of a Correctly Expanded Supersonic Laminar Jet from Sxisymmetric Nozzles. Effect of Reynolds Number on Pitot Impact Pressure.

• KASHITANI Masashi

• MIYAZATO Yoshiaki

• MASUDA Mitsuharu

• YANO Hidenobu

• MATSUO Kazuyasu

Bibliographic Information

Other Title

• 軸対称ノズルからの適正膨張超音速層流噴流の構造　　ピトー全圧に及ぼすレイノルズ数の影響
• ジク タイショウ ノズル カラ ノ テキセイ ボウチョウ チョウオンソク ソウ

Abstract

Theoretical and experimental investigations were performed on the structure of a correctly expanded supersonic laminar jet from axisymmetric nozzles. A small perturbation method was used in the theoretical calculation, and the effect of the Reynolds number Re_De at the nozzle exit on the Pitot impact pressure on the jet center line is discussed. A low-density wind tunnel was used for the experiments with the Mach number M_e at the nozzle exit of about 2.9 and Re_De from 1000 to 1800. The axial and radial Pitot impact pressure profiles were measured, and it was found that the Pitot impact pressure distributions on the jet center line correlate quite well with the parameter x/(D_eRe_De), where x is the downstream distance from the nozzle exit and D_e is the nozzle exit diameter. The present theory suggests that the length of the jet potential core increases linearly with the increase in Re_De, and this result is found to agree quantitatively well with the results of the experiment.

Journal

• TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B

  TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 63 (616), 3905-3912, 1997

  The Japan Society of Mechanical Engineers

Keywords

• Potential Core Length

Details

• CRID: 1390001205893410432
• NII Article ID: 130004222783
• NII Article ID: 110002396723
• NII Book ID: AN00187441
• DOI: 10.1299/kikaib.63.3905
• ISSN: 18848346
• ISSN: 03875016
• NDL BIB ID: 4365695
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4365695
• Web Site: http://www.jstage.jst.go.jp/article/kikaib1979/63/616/63_616_3905/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed