Experimental study on effects of shock wave impingement on supersonic combustion

Arif Nur Hakim, Shigeru Aso, Yasuhiro Tani

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An experimental study has been conducted using reflected type of shock tunnel to investigate the effect of shock wave impingement on supersonic combustion. In the experiment, air is compressed by reflected shock wave up to total temperature of 2800 K and total pressure of 0.35 MPa. Shock heated air is used as a reservoir gas of supersonic nozzle. Hydrogen gas is injected transversely through 2mm-diameter circular sonic nozzle into free stream of Mach 2. Flow duration is around 300 microseconds. The effects of shock wave impingement on the combustion has been studied by generating three different shock waves using ramp which is located on the opposite side of the supersonic nozzle wall. The wedge angles of the ramp of 5°, 10° and 15° are selected. Schlieren method is used to visualize flow pattern and shock structures and the UV-CCD camera is used to observe region of combustion because the camera could catch the self luminescence of OH radicals which is produced by combustion. The combination of Schlieren images and UV images shows the shock structure in the flow field and its effect to the supersonic combustion. The shock wave impingement enhances the combustion and shock induced separated region, which is observed at stronger shock impingement, could work as flame-holder.

Original languageEnglish
Pages (from-to)31-42
Number of pages12
JournalMemoirs of the Faculty of Engineering, Kyushu University
Volume68
Issue number1
Publication statusPublished - Mar 1 2008

Fingerprint

shock wave
Shock waves
experimental study
combustion
Nozzles
Gases
compressed air
Compressed air
CCD cameras
luminescence
flow pattern
Flow patterns
flow field
Mach number
effect
Combustion
Experimental study
Luminescence
Hydrogen
Flow fields

All Science Journal Classification (ASJC) codes

  • Energy(all)
  • Atmospheric Science
  • Earth and Planetary Sciences(all)
  • Management of Technology and Innovation

Cite this

Experimental study on effects of shock wave impingement on supersonic combustion. / Hakim, Arif Nur; Aso, Shigeru; Tani, Yasuhiro.

In: Memoirs of the Faculty of Engineering, Kyushu University, Vol. 68, No. 1, 01.03.2008, p. 31-42.

Research output: Contribution to journalArticle

Hakim, Arif Nur ; Aso, Shigeru ; Tani, Yasuhiro. / Experimental study on effects of shock wave impingement on supersonic combustion. In: Memoirs of the Faculty of Engineering, Kyushu University. 2008 ; Vol. 68, No. 1. pp. 31-42.
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