Investigations of dynamics and structure generation in jet-in-crossflow con-figurations

射流横流配置中的动力学和结构生成研究

• 批准号: 186878845
• 负责人: Professor Dr.-Ing. Ulrich Rist
• 金额: --
• 依托单位: Institut für Aerodynamik und Gasdynamik (IAG)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/186878845?language=en
• 关键词: Investigations; dynamics; structure; generation; jet

Jet-in-crossflow configurations are encountered when a concentrated strong jet injects energy into a boundary-layer flow along a wall. This leads to hitherto unexplained interactions between jet and cross flow, whose dependence on the parameters defining the con-figuration needs to be clarified. Numerical simulations and investigations using stability theory are intended to lead to a new insight into the fluid-dynamical mechanisms of jet-and-crossflow configurations which are needed for a better understanding and optimization of such configurations. The necessary numerical tools from the most recent literature have been extended to and validated for compressible flows in the first funding period of the present proposal. Using these, new configurations in supersonic flow shall now be in-vestigated, for which neither investigations nor findings are available so far.

当一股集中的强射流沿壁面沿着向边界层流动注入能量时，就会遇到横流中的射流构形。这导致了迄今无法解释的射流和横流之间的相互作用，其依赖于定义配置的参数需要澄清。使用稳定性理论的数值模拟和调查的目的是导致一个新的洞察射流和横流配置，需要更好地理解和优化这样的配置的流体动力学机制。在本提案的第一个供资期间，已将最新文献中的必要数值工具扩展到可压缩流，并对其进行了验证。利用这些，现在应研究超音速流中的新构型，这是迄今为止还没有研究和发现的。