RUI: Undergraduate Research in Musical Acoustics

这项工作的主要目标是让本科生参与原创科学研究，并向他们介绍科学专业提供的兴奋和挑战。这项研究包括一项研究，将有助于理解不同几何形状的共振管中的气流。重点是了解通过不同形状的管道的流动，这些管道耦合到由空气射流与尖锐边缘相互作用引起的振荡。用来研究这种相互作用的系统将是风琴管。然而，这些结果可以用来理解许多科学和工业情况，这些情况涉及金属或木制管道中包含的振荡或流动的空气。作为这项工作的一部分，将开发一种光学成像大面积气体和液体流动的方法，并对其进行优化，以成像室温下的气流。此外，还将进行计算机模拟，并与实验结果进行验证，以便从理论上研究改变管道物理参数的影响。将作出重大努力，招募女学生参与提高从事科学研究的女性的参与。这项工作包括与本科生合作，了解烟道风琴管和记录器中的气流物理。主要目标是让本科生参与原创科学研究，并向他们介绍刺激和挑战，这将导致他们的一生致力于科学追求。科学目标是了解不同几何形状的管道中的气流，这些气流耦合到由喷流边缘相互作用驱动的振荡。特别令人感兴趣的是低雷诺数的振荡流动和稳态流动在圆形和矩形管道中传播的差异。这种类型的系统在Fipple乐器中可以找到，如烟道风琴管和录音机，以及许多工业场合。透射式电子散斑干涉法将用于获得三维打印产生的等截面积圆形和矩形透明管中气流的高速图像。这些图像将与压力和流速测量相结合，以了解为什么流经矩形风琴管的流动看起来不同于流经圆柱形风琴管的流动。实验结果将被用来验证计算机模拟，然后将被用来研究其他物理参数对通过振荡器-谐振器系统的流动的影响。这一结果将有助于更好地了解管道形状对声学和流体流动的影响，以及与流体驱动振荡耦合的谐振器中的流体流动。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The primary goal of the work is to involve undergraduate students in original scientific research and introduce them to the excitement and challenge that a profession in the sciences offers. The research encompasses a study that will lead to an understanding of the airflow in resonating pipes of different geometries. The emphasis is on understanding the flow through pipes with different shapes coupled to oscillations caused by an air jet interacting with a sharp edge. The system used to study this interaction will be the organ pipe. However, the results can be used to understand the many scientific and industrial situations that involve oscillating or flowing air contained within a metal or wooden duct. As part of the work, a method for optically imaging gas and fluid flow over a large area will be developed and optimized for imaging airflow at room temperature. Additionally, a computer simulation will be developed and validated with the experimental results so that the effects of changing the physical parameters of the pipe can be investigated theoretically. A significant effort will be made to recruit women students to participate in enhancing the participation of women pursuing scientific research as a career.The work involves collaborating with undergraduate students to understand the physics of airflow in flue organ pipes and recorders. The primary goal is to involve undergraduate students in original scientific research and introduce them to the excitement and challenge that will result in a life dedicated to scientific pursuits. The scientific goal is to understand the airflow in pipes of different geometries coupled to oscillations driven by a jet-edge interaction. Of particular interest are the differences in oscillating and steady-state flows with low Reynolds numbers propagating through circular and rectangular pipes. This type of system is found in fipple musical instruments such as flue organ pipes and recorders and many industrial situations. Transmission electronic speckle pattern interferometry will be used to obtain high-speed imagery of airflow through circular and rectangular transparent pipes of equal cross-sectional area produced by 3-D printing. The imagery will be coupled with pressure and flow velocity measurements to understand why the flow through rectangular organ pipes appears to differ from the flow-through cylindrical organ pipes. The experimental results will be used to validate a computer simulation, which will then be used to investigate the influence of other physical parameters on the flow through the oscillator-resonator system. The results will lead to a better understanding of the effects of the pipe shape on acoustics and fluid flow in resonators coupled to flow-driven oscillations.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.