POWRE: Use of Conventional Computational Fluid Dynamics to Predict Sound Generated by Complex Flows

摘要 提案编号：CTS-9806110 主要研究者：S.恩典 POWRE奖：目标是开发一种计算与非定常流场相关的声场的方法。 所提出的研究将使一个复杂的流场的声学部分被确定为一个步骤，在计算流体力学计算的流量，即使原来的计算流体力学计算是有效的，只为不可压缩流。 该方法是基于一个独特的分裂成涡流，声学和熵模式的字段变量，即使在存在非线性。 该方法将在两种流动上进行测试：流过空腔的流动;来自湍流射流的流动。 这个POWRE奖将使PI专注于一个新的研究领域，并在她学术生涯的关键时刻利用与法国研究人员的合作。

ABSTRACT Proposal Number: CTS-9806110 Principal Investigator: S. Grace A POWRE Award: The goal is to develop a method for calculating the acoustic field associated with unsteady flow fields. The proposed research will enable the acoustic portion of a complicated flow field to be identified as a step in a CFD calculation of the flow, even when the original CFD computation is valid only for incompressible flow. The method is based upon a unique splitting of the field variables into vortical, acoustic, and entropy modes, even in the presence of non-linearities. The method will be tested on two flows: flow past a cavity; flow from a turbulent jet. This POWRE award will enable the PI to focus on a new research area and to take advantage of collaboration with French researchers at a critical point in her academic career.