| Author Name | Affiliation | Postcode | | Zhaokun Ren* | AVIC Aerodynamic Research Institute, Harbin 150001, China | 150001 | | Yue Zhang | AVIC Aerodynamic Research Institute, Harbin 150001, China | 150001 | | Yunxiang Wang | AVIC Aerodynamic Research Institute, Harbin 150001, China | 150001 | | Zhanyuan Ma | AVIC Aerodynamic Research Institute, Harbin 150001, China | 150001 | | Chen Bu | AVIC Aerodynamic Research Institute, Harbin 150001, China | 150001 |
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| Abstract: |
| Ice crystal icing is an important cause of accidents in aircraft engines. Ice formation in aircraft engines can cause internal blades to freeze, affecting the quality of the air flow field and blocking the flow path. On the other hand, the entry of ice crystal particles into the combustion chamber can cause a decrease in temperature or even flameout, leading to engine surge or even shutdown. Therefore, it is necessary to conduct multiphase flow tests on ice crystals for aircraft components such as aircraft engines. Conducting ice crystal multiphase flow tests on aircraft is a very effective research method, but it requires the construction of an ice crystal multiphase flow test platform that meets relevant technical requirements. The paper focuses on the relevant experimental requirements and combines wind tunnel test structures to conduct multiphase flow numerical simulations on various forms of jet pipelines, obtaining particle motion distribution results. After comparison, the optimal form of jet structure is obtained, providing the best selection scheme for the design of relevant wind tunnel structures. |
| Key words: Ice crystal Wind tunnel Numerical simulation Multiphase flow Jet pipelines |
| DOI：10.11916/j.issn.1005-9113.25005 |
| Clc Number:TB34 |
| Fund: |
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| Descriptions in Chinese: |
| 冰晶结冰是航空发动机发生事故的一个重要原因，航空发动机结冰会导致其内部叶片发生结冰，影响空气流场品质，堵塞流道。另一方面,冰晶颗粒进入燃烧室后会导致燃烧室内温度降低甚至熄火，导致发动机发生喘振甚至停车，因此开展针对航空发动机等飞行器部件的冰晶多相流试验是十分必要的。对飞行器开展冰晶多相流试验是一种非常有效的研究方式，但是需要搭建满足相关技术要求的冰晶多相流试验平台。本文中就是针对相关试验要求，结合风洞试验洞体结构，对多种形式的喷射管道进行了多相流数值模拟，得到粒子运动分布结果，经过对比，得到最优形式的喷射结构，为相关风洞结构设计提供最佳选择方案。 |
