| 引用本文: | 郭正,刘君,瞿章华.塞式喷管高度特性的 CFD 研究.[J].国防科技大学学报,2000,22(4):1-4.[点击复制] |
| GUO Zheng,LIU Jun,QU Zhanghua.A Study on Altitude Characteristic of Plug Nozzle Using CFD Method[J].Journal of National University of Defense Technology,2000,22(4):1-4[点击复制] |
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| 塞式喷管高度特性的 CFD 研究 |
| 郭正, 刘君, 瞿章华 |
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(国防科技大学 航天与材料工程学院, 湖南 长沙 410073)
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| 摘要: |
| 采用 NND2M 差分格式, 从考虑 k-ε湍流模型的理想气体三维薄层近似 NS 方程出发, 对塞式喷管内外流场以及比冲随高度变化特性进行了数值研究, 得到了较为准确的结果。计算表明, 塞式喷管的低空性能明显优于传统喷管, NND2M 差分格式及相应计算软件适合于模拟复杂喷流流场, 可用于塞式喷管发动机的研究中。 |
| 关键词: 塞式喷管 数值研究 NS方程 k-ε模型 |
| DOI： |
| 投稿日期：2000-01-05 |
| 基金项目:国家863高技术项目资助(863-2-1-4-2) |
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| A Study on Altitude Characteristic of Plug Nozzle Using CFD Method |
| GUO Zheng, LIU Jun, QU Zhanghua |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Numerical study of plug nozzle flow field and thrust characteristic was completed based on 3-D TLA NS equations with NND2M scheme. Calculations were performed under ideal, perfect gas assumptions. Turbulence was taken into account with a k-εturbulence model. The results show a significant performance increases at the sea level compared with the bell nozzle. They also show that NND2M scheme is fit for numerical simulation of complex jet flow. |
| Keywords: plug nozzle numerical study NS equations k-εturbulence model |
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