Numerical study on supersonic combustor using ethylene with pylon and aero-ramp combustion

YANG Yu; WU Da; WANG Yingyang; LI Xuchang; ZHANG Baoshan

doi:10.7638/kqdlxxb-2019.0119

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Numerical study on supersonic combustor using ethylene with pylon and aero-ramp combustion

更新时间：2026-05-28

- Numerical study on supersonic combustor using ethylene with pylon and aero-ramp combustion
- Vol. 38, Issue 5, Pages: 938-947(2020)
- 作者机构：
  
  1. 空军工程大学防空反导学院,西安,710051
  2. 空军工程大学装备管理与无人机工程学院,西安,710051
  3. 92095部队,台州,318050
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2019.0119
  CLC： V231.3
- Published：2020
- 稿件说明：
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杨宇, 吴达, 王应洋, 李旭昌, 张保山. 超燃燃烧室小肋片/气动斜坡结构组合研究[J]. 空气动力学学报, 2020, 38(5): 938-947.

YANG Yu, WU Da, WANG Yingyang, et al. Numerical study on supersonic combustor using ethylene with pylon and aero-ramp combustion[J]. 2020, 38(5): 938-947.
杨宇, 吴达, 王应洋, 李旭昌, 张保山. 超燃燃烧室小肋片/气动斜坡结构组合研究[J]. 空气动力学学报, 2020, 38(5): 938-947. DOI： 10.7638/kqdlxxb-2019.0119.

YANG Yu, WU Da, WANG Yingyang, et al. Numerical study on supersonic combustor using ethylene with pylon and aero-ramp combustion[J]. 2020, 38(5): 938-947. DOI： 10.7638/kqdlxxb-2019.0119.

摘要

为设计出一种能有效增强掺混、提高燃烧效率的燃料喷注方案，首次将锥形肋片与气动斜坡进行结构组合研究，并对小肋片/气动斜坡不同组合方式冷、热流场进行数值模拟，分析结果发现：与传统的气动斜坡喷射相比，多肋片展向组合后方喷射能取得较为理想的掺混效果，并且不会带来较大总压损失；引入燃气发生器后，肋片的掺混增强效果得到明显提升。改善后的喷射方案能提高约9%的燃烧效率。

Abstract

In order to design a fuel-injection scheme that could effectively enhance mixing and improve combustion efficiency

in this paper

the structural combination of conical pylon and aero-ramp was studies for the first time

and numerical simulation was carried out upon the cold and hot flow fields of the small pylon/aero-ramp. The experimental results show that:compared with the injection of traditional aero-ramp

the rear injection of multiple pylons in the extended composites can achieve a better mixing effect without causing a large total pressure loss. With the gas generator introduced

the mixing enhancement effect of the pylons is improved significantly. The improved injection scheme can increase the combustion efficiency by approximately 9%. The numerical results can provide certain reference for engineering practice.

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references

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