| 张琨,刘佳,沈胜强.可调式喷射器流场数值分析[J].,2010,(6):942-945 |
| 可调式喷射器流场数值分析 |
| Numerical simulation of flow inside an adjustable ejector |
| |
| DOI：10.7511/dllgxb201006019 |
| 中文关键词: 喷射器 喷嘴 可调节 超音速 流场 |
| 英文关键词: ejector nozzle adjustable supersonic flow |
| 基金项目:国家自然科学基金资助项目(50576007). |
|
| 摘要点击次数: 1447 |
| 全文下载次数: 969 |
| 中文摘要: |
| 建立了可调式喷射器的数学模型，使用FLUENT软件模拟了调节锥在不同位置的喷射器内部流场．结果显示，喷射器轴线上的压力在等截面混合室中呈线性增加；在扩压室的初始段升高迅速，中后段升高缓慢．混合室内中心部位的流速与边缘流速差异较大．调节锥轴向进入喷嘴喉部使激波位置移向上游，工作流量减少． |
| 英文摘要: |
| A mathematical model of the adjustable ejector was established and the flow of the adjustable ejector was simulated by FLUENT on different spindle positions. The experimental results indicate that the axial pressure of an adjustable ejector increases linearly in the constant area mixing section, sharply in the beginning of diffuser section and then slowly in the other sections of diffuser. The velocity of flow in the mixing section differs significantly at the axis and boundary. The movement of spindle into the nozzle makes the position of shock wave upstream and motive flow rate decreases. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |