一种考虑粘性效应的定平面密切锥双后掠乘波体设计方法
By establishing a viscous reference flow field for streamline tracing, the problem of the influence of viscous boundary layer in waverider design is solved, the low-speed aerodynamic performance of waveriders is improved, and the wide speed range requirements of aerospace vehicles are met.
CN117150640BActive Publication Date: 2026-07-17NORTHWESTERN POLYTECHNICAL UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NORTHWESTERN POLYTECHNICAL UNIV
- Filing Date
- 2023-07-28
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing waverider design methods neglect the influence of the viscous boundary layer, resulting in limited improvement in low-speed aerodynamic performance and making it difficult to meet the wide-speed-range aerodynamic performance requirements of aerospace vehicles.
Method used
A viscous reference flow field is established by solving the RANS equations using CFD. A fixed-plane closely conical double-swept waverider body that considers viscous effects is generated by streamline tracing to improve the flow field design.
Benefits of technology
It significantly improves the aerodynamic performance of the double-swept waverider under design conditions and enhances lift characteristics at low speeds.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN117150640B_ABST
Abstract
本发明涉及涉及计算流体力学和高超声速飞行器气动布局设计领域，提出一种考虑粘性效应的定平面密切锥双后掠乘波体设计方法，具体包括以下步骤：步骤1：确定设计工况与PLF、FCT设计型线；步骤2：通过步骤1中确定的PLF、FCT型线求解ICC型线；步骤3：根据步骤1中确定的设计工况，建立粘性基准流场的几何模型，采用CFD方法计算该几何模型的流场，获得粘性基准流场；步骤4：基于步骤2中获得的ICC曲线和步骤3获得的粘性基准流场，采用密切锥方法进行流线追踪，生成乘波体下表面，通过前缘型线截取自由流面生成乘波体上表面，最后组装生成完整的乘波体表面。本发明考虑粘性的影响能进一步提高双后掠乘波体在设计工况下的气动性能。
Need to check novelty before this filing date? Find Prior Art