Optimising wall-turbulence spectra for noise control

该项目的关键思想是反向优化墙湍流降噪技术。通常，前进式方法需要产生一个想法，然后观察它如何改变壁面压力谱，从而改变辐射噪声(当前的例子包括翅片、伞盖、结构粗糙度)。这个项目将颠覆这个想法；什么样的墙体压力谱产生的辐射噪声最低(前提是它仍然是湍流的)，我们能用创造这种谱的设计来产生吗？通过这样做，可以开发出一种最优的壁面覆盖层，将壁面湍流噪声降至最低。

The key idea for this project is to work backwards to optimisewall-turbulence noise reduction technologies. Usually the forwardapproach requires generating an idea then observing how it altersthe wall pressure spectrum and thus the radiated noise (currentexample include finlets, canopies, structured roughness). Thisproject would flip that idea on its head; what wall pressurespectrum produces the lowest radiated noise (subject to it stillbeing turbulent), and can we generate with designs that create thatspectrum? In doing so, an optimal wall covering could be developedthat minimises wall-turbulence noise.