An Integrated Framework for High-Order Aeroacoustics of Complex Configurations
复杂结构高阶气动声学的集成框架
基本信息
- 批准号:1114816
- 负责人:
- 金额:$ 42.54万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2011
- 资助国家:美国
- 起止时间:2011-10-01 至 2014-09-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Direct numerical simulation of noise production and propagation remains prohibitively expensive for engineering problems due to resolution requirements. Consequently, hybrid approaches are adopted, which consist of predicting near-field flow quantities via a suitable computational fluid dynamics simulation, and far-field sound radiation by aero-acoustic integral methods, or acoustic analogy formulations. It is critical that the complex flow physics associated with sound generation in the near field is accurately captured by the computational fluid dynamics simulation. Therefore, it is necessary to use a high-order numerical scheme with very low dispersion/dissipation errors. Also, the most significant airframe noise sources are landing gear and high-lift components, such as slats and flaps. The geometric complexity of these components calls for use of numerical methods that can perform well on unstructured grids. The high-order Vincent-Castonguay-Jameson-Huynh (VCJH) schemes recently developed by the principal investigator and colleagues at Stanford University with National Science Foundation funding satisfy both of the aforementioned requirements. In the present work, a state-of-the-art computational framework will be developed for performing aero-acoustics simulations by integrating advanced sub-grid scale (SGS) models for large-eddy simulations (LES) of turbulent flow, and a new Ffowcs Williams-Hawkings (FWH) acoustic analogy formulation for sound propagation, with a graphical processing unit (GPU) enabled high-order VCJH flow solver for unstructured grids. The resulting software will enable the principal investigator and colleagues to undertake high-fidelity large scale aero-acoustics simulations over complex configurations at an affordable cost. The ability to perform such simulations will greatly facilitate design of new aircraft with reduced noise signatures.The future growth of commercial air transportation (currently predicted to triple by the year 2030) may be severely limited by its adverse environmental impacts (both emissions and noise). Noise regulations have become, and will continue to become, increasingly stringent, and noise reduction is now a major consideration in the design of transport aircraft. Although computer simulations currently play a major role in airplane design, their ability to predict noise, and in particular airframe noise (which is the largest component of noise during landing) remains very limited. The principal investigator and his colleagues aim to combine new mathematical and computational techniques to advance the state-of-the-art in noise prediction, and thereby enable design of new, quieter aircraft, with the ultimate target of restricting their noise footprint to within airport perimeters. A successful outcome is significant to the United States economy because commercial aircraft continue to be the largest single export sector.
直接数值模拟噪声的产生和传播仍然是昂贵的工程问题,由于分辨率的要求。因此,采用混合方法,包括通过合适的计算流体动力学模拟预测近场流量,以及通过航空声学积分方法或声学模拟公式预测远场声辐射。计算流体动力学模拟准确地捕获与近场中的声音产生相关的复杂流动物理是至关重要的。因此,有必要使用具有非常低的色散/耗散误差的高阶数值格式。此外,最重要的机体噪声源是起落架和高升力部件,如缝翼和襟翼。这些组件的几何复杂性要求使用的数值方法,可以在非结构化网格上表现良好。最近由斯坦福大学的首席研究员和同事们在国家科学基金会的资助下开发的高阶精确-Castonguay-Jameson-Huynh(VCJH)格式满足上述两个要求。在目前的工作中,一个国家的最先进的计算框架将开发用于执行气动声学模拟集成先进的亚网格尺度(SGS)模型的大涡模拟(LES)的湍流,和一个新的Ffowcs威廉姆斯-霍金斯(FWH)声学模拟公式的声音传播,与图形处理单元(GPU)启用高阶VCJH流求解器的非结构化网格。由此产生的软件将使主要研究者和同事能够以负担得起的成本在复杂的配置上进行高保真的大规模航空声学模拟。进行这种模拟的能力将极大地促进具有降低的噪声特征的新飞机的设计。商业航空运输的未来增长(目前预测到2030年将增长三倍)可能会受到其不利的环境影响(排放和噪声)的严重限制。噪声法规已经变得并将继续变得越来越严格,并且降噪现在是运输飞机设计中的主要考虑因素。虽然计算机模拟目前在飞机设计中发挥着重要作用,但其预测噪声,特别是机体噪声(着陆时噪声的最大组成部分)的能力仍然非常有限。首席研究员和他的同事们的目标是将联合收割机新的数学和计算技术相结合,以推进噪音预测的最新技术,从而能够设计出更安静的新型飞机,最终目标是将其噪音足迹限制在机场周边范围内。成功的结果对美国经济意义重大,因为商用飞机仍然是最大的单一出口部门。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Antony Jameson其他文献
An efficient GPU-based <em>h</em>-adaptation framework via linear trees for the flux reconstruction method
- DOI:
10.1016/j.jcp.2024.112823 - 发表时间:
2024-04-01 - 期刊:
- 影响因子:
- 作者:
Lai Wang;Freddie Witherden;Antony Jameson - 通讯作者:
Antony Jameson
Preconditioned Smoothers for the Full Approximation Scheme for the RANS Equations
用于 RANS 方程完全近似格式的预处理光滑子
- DOI:
10.1007/s10915-018-0792-9 - 发表时间:
2018-08-09 - 期刊:
- 影响因子:3.300
- 作者:
Philipp Birken;Jonathan Bull;Antony Jameson - 通讯作者:
Antony Jameson
PyFR v2.0.3: Towards industrial adoption of scale-resolving simulations
PyFR v2.0.3:迈向工业采用尺度分辨模拟
- DOI:
10.1016/j.cpc.2025.109567 - 发表时间:
2025-06-01 - 期刊:
- 影响因子:3.400
- 作者:
Freddie D. Witherden;Peter E. Vincent;Will Trojak;Yoshiaki Abe;Amir Akbarzadeh;Semih Akkurt;Mohammad Alhawwary;Lidia Caros;Tarik Dzanic;Giorgio Giangaspero;Arvind S. Iyer;Antony Jameson;Marius Koch;Niki Loppi;Sambit Mishra;Rishit Modi;Gonzalo Sáez-Mischlich;Jin Seok Park;Brian C. Vermeire;Lai Wang - 通讯作者:
Lai Wang
Aerodynamic design via control theory
- DOI:
10.1007/bf01061285 - 发表时间:
1988-09-01 - 期刊:
- 影响因子:3.300
- 作者:
Antony Jameson - 通讯作者:
Antony Jameson
High-order accurate simulations of unsteady flow past plunging and pitching airfoils
- DOI:
10.1016/j.compfluid.2010.09.005 - 发表时间:
2011-01-01 - 期刊:
- 影响因子:
- 作者:
Chunlei Liang;Kui Ou;Sachin Premasuthan;Antony Jameson;Z.J. Wang - 通讯作者:
Z.J. Wang
Antony Jameson的其他文献
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{{ truncateString('Antony Jameson', 18)}}的其他基金
Time-Spectral Method for Unsteady Viscous Flow on Moving and Deformable Grids with the High-order Spectral Difference Method
高阶谱差法求解移动变形网格上非定常粘性流的时谱法
- 批准号:
0915006 - 财政年份:2009
- 资助金额:
$ 42.54万 - 项目类别:
Standard Grant
High-Order Numerical Algorithms for Steady and Unsteady Simulation of Viscous Compressible Flow
粘性可压缩流稳态和非稳态模拟的高阶数值算法
- 批准号:
0708071 - 财政年份:2007
- 资助金额:
$ 42.54万 - 项目类别:
Continuing Grant
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