Réduction du bruit et optimisation aérodynamique de systèmes d'aspiration d'air domestiques - Projet Aspire

减少噪音并优化国内空气动力系统 - Projet Aspire

• 批准号: 543679-2019
• 负责人: Panneton, Raymond
• 金额: $ 7.02万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=692587
• 关键词: duction; du; bruit; et; optimisation

This project aims to reduce the noise generated by domestic air extraction systems by exploring and combining two approaches. The first deals with noise reduction by correctly designing the ventilation wheel with a focus on its aerodynamic performance. To do this, we will develop new design technologies based on blade shape optimization by the adjoint methods in relative reference. The second approach is to reduce noise through a new generation of acoustic treatments applied to the walls of the volute and the filter grid. For this purpose, we will explore and develop new concepts of thermo-visco-acoustic metamaterials subject to airflow and adapted to the problem (restricted space, extended frequency range). Through an original optimization process, these metamaterials will be combined to form volute metawalls and filtration metagrids. The integration of the three optimized elements (wheel, metawalls, metagrids) in a prototype of air extraction system will be analyzed and tested experimentally. This system is expected to be quieter than conventional systems while maintaining or increasing its aerodynamic performance. New modeling approaches such as the coupling of numerical thermo-visco-acoustic analysis to analytical serial and parallel transfer matrices, as well as new adjoint aerodynamic design optimization solvers, will be proposed and transferable to the industrial partner. This project will have a social and environmental impact by helping to reduce the noise caused by residential ventilation systems and improve the quality of life of residents.

该项目旨在通过探索和结合两种方法来降低家用抽气系统产生的噪音。第一个解决方案是通过正确设计通风轮来降低噪音，重点关注其空气动力学性能。为此，我们将通过相关参考的伴随方法开发基于叶片形状优化的新设计技术。第二种方法是通过对蜗壳壁和过滤网格进行新一代声学处理来降低噪音。为此，我们将探索和开发受气流影响并适应问题（受限空间、扩展频率范围）的热粘声超材料的新概念。通过原始的优化过程，这些超材料将被组合形成蜗壳超墙和过滤超网格。抽气系统原型中的三个优化元件（轮、元墙、元网格）的集成将进行实验分析和测试。该系统预计比传统系统更安静，同时保持或提高其空气动力学性能。新的建模方法，例如数值热粘声分析与分析串行和并行传输矩阵的耦合，以及新的伴随空气动力学设计优化求解器，将被提出并转让给工业合作伙伴。该项目将有助于减少住宅通风系统产生的噪音并提高居民的生活质量，从而产生社会和环境影响。