Aero-Acoustics

Course Duration: 2 Days

Who Should Attend

This course is intended for any engineer involved or interested in CFD modeling of aero-acoustic problems. Prior experience with a CFD tool, preferably STAR-CCM+, is strongly recommended but not required.

Course Description

The aim of this course is to teach the techniques needed to conduct accurate and efficient aero-acoustic simulations using computational fluid dynamics. The course is structured as a combination of lectures, demonstrations and workshops (tutorials). Best practices for meshing and analysis of stationary and transient RANS simulations as well as DES simulations and their analysis are given. The course begins with an introduction to the fundamental principles of aero-acoustics, including the concept of acoustic analogy to derive the various broadband noise models available inside STAR-CCM+. This is followed by a sequence of STAR-CCM+ simulation cases which demonstrate the various acoustic models and features available for noise source resolution and analysis. Attendees will learn how to set-up simulations for external and internal aero-acoustic problems, analyze the noise sources and perform the necessary steps to export data to third party tools.

Course Content

Day 1

• Lectures: Introduction to Aero-Acoustics and Broadband Noise Models
• Workshop: Flow Induced Noise Around a Cylinder
• Lecture: DES and LES Methodologies
• Workshop: Transient 3D-Cylinder – Point Spectra

• Lecture: Broadband Noise Source Models II
• Demonstration: Noise Inducing Internal Flow in a Blower
• Lecture: Post-Processing the Transient Surface Data
• Workshop: Spectral Analysis of the Car Mirror and Window