Next-generation computational fluid dynamics (CFD) solver

下一代计算流体动力学 (CFD) 求解器

• 批准号: 2271972
• 金额: --
• 依托单位: University of Liverpool
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2271972
• 关键词: Next; generation; computational; fluid; dynamics

The next-generation computational fluid dynamics solver aims to offer significant and potentially revolutionary additions over its predecessors, including e.g. higher-order spatial discretisation and automatic differentiation. Automatic differentiation allows for a wider choice in turbulence and transition models for the solver's linearised frequency domain (LFD) and discrete adjoint solvers. Higher-order CFD methods, on the other hand, potentially enable more efficient and accurate simulations at lower computational costs, which is attractive for flows at high angles of attack and transonic speeds, where high accuracy is key. However, application of non-linear time-marching simulations in a routine aircraft loads and aeroelastics production environment is likely out-of-scope for the near future, and hence linearised methods are still desirable.The project will first aim to allow the new solver to perform direct and adjoint linearised CFD computations. With the capabilities developed, the research focus will be on predicting and understanding the physics of high-speed separated flows. By considering direct/adjoint modal structures, the dealing with such physics could be improved. Demonstration of the new capabilities and techniques for this case will have direct relevance for Airbus design teams and will allow them to design more efficient aircraft.The project will support the EPSRC themes of "Engineering", "Digital economy" and "Manufacturing the future" by strengthening the leading role of Airbus UK in the design of the wings of the future, and reliable numerical aerodynamic prediction is a key enabler thereof. In terms of EPSRC's detailed priorities, Fluid Dynamics and Aerodynamics is a large research field that is identified as 'maintain', recognising its central importance to many industries. The project thus contributes directly to a more productive, resilient and connected nation, in line with EPSRC's high-level prosperity strategy.

下一代计算流体动力学求解器旨在提供比其前辈更重要和潜在的革命性补充，包括高阶空间离散化和自动微分。自动微分允许在求解器的线性化频域（LFD）和离散伴随求解器的湍流和转捩模型中有更广泛的选择。另一方面，高阶CFD方法可能以较低的计算成本实现更有效和更准确的模拟，这对于高攻角和跨音速速度下的流动是有吸引力的，其中高精度是关键。然而，在常规飞机载荷和气动弹性生产环境中应用非线性时间推进模拟在不久的将来可能超出范围，因此线性化方法仍然是可取的。该项目的首要目标是使新的求解器能够执行直接和伴随的线性化CFD计算。随着能力的发展，研究重点将是预测和理解高速分离流的物理学。通过考虑直接/伴随模态结构，可以改进对这种物理的处理。该项目展示的新能力和新技术将对空客设计团队产生直接影响，使他们能够设计出更高效的飞机。该项目将通过加强空客英国公司在未来机翼设计中的主导作用，支持EPSRC的“工程”、“数字经济”和“制造未来”主题，而可靠的数值空气动力学预测是其中的关键推动因素。在EPSRC的详细优先事项方面，流体动力学和空气动力学是一个被确定为“X”的大型研究领域，认识到其对许多行业的核心重要性。因此，该项目直接有助于提高生产力，复原力和联系的国家，符合EPSRC的高水平繁荣战略。