Effects of injection angle and pressure on mixing performance of fuel injection via various geometries for upstream-fuel-injected scramjets

研究成果: Contribution to journalArticle査読

29 被引用数 (Scopus)

抄録

Effective fuel injection and mixing is of crucial importance for reliable operation of scramjet engines, where fuel must be injected into high-speed crossflow and mixed with air at an extremely short timescale. This paper presents the results of a numerical study that investigates the effects of the injection angle and pressure for various orifice shapes on fuel mixing characteristics into hypersonic airflow at Mach 5, aiming at the application to scramjet operation with upstream fuel injection at Mach 10. The mixing performance has been evaluated with respect to the mixing efficiency, total pressure recovery, fuel penetration, and streamwise circulation. Significant influence of the injection angle and intensity on the mixing has been observed in conjunction with the geometric features of the injector orifice. An additional performance parameter, namely the mixing vorticity effectiveness, has been found to be an effective measure to quantify the contribution of the streamwise vorticity in mixing enhancement.

本文言語英語
ページ(範囲)485-498
ページ数14
ジャーナルActa Astronautica
128
DOI
出版ステータス出版済み - 11 1 2016
外部発表はい

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

フィンガープリント 「Effects of injection angle and pressure on mixing performance of fuel injection via various geometries for upstream-fuel-injected scramjets」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル