Study on the Flow Field Characteristics of Adaptive Aerodynamically Balance Ejector Nozzles with a Wide Working Range

Shengze Wu, Jingwei Shi, Li Zhou, Zhanxue Wang

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

In order to study the influence of different geometric parameters in a wide working range on the internal and external flow characteristics and thrust performance of the adaptive aerodynamic balance ejector nozzle, this paper focuses on the numerical simulation studies of ejector nozzles with different nozzle radius ratios, different spacing ratios and different expansion section length ratios under different working conditions. Results show that the thrust coefficient of large throat radius ratio ejector nozzle and small throat spacing ratio ejector nozzle in the subsonic state is better, while the thrust coefficient is relatively worse in the supersonic state. The thrust drag reduction performance of the nozzle is poor in the transonic state, and increasing the throat radius ratio and decreasing the throat spacing ratio can improve the thrust drag reduction performance of the nozzle in the transonic state. Increasing the length of the expansion section can improve the thrust performance of the nozzle under all working conditions to a certain extent.

Original languageEnglish
Title of host publicationSpringer Aerospace Technology
PublisherSpringer Science and Business Media Deutschland GmbH
Pages241-251
Number of pages11
DOIs
StatePublished - 2025

Publication series

NameSpringer Aerospace Technology
VolumePart F194
ISSN (Print)1869-1730
ISSN (Electronic)1869-1749

Keywords

  • Ejector Nozzle
  • Flow Characteristic
  • Self-adaptive

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