Fluctuating Pressure Characteristics in the Mixing Region of a Perturbed and Unperturbed Round Free Jet.
Abstract
Theoretically, near-field pressure measurements in a turbulent flow can be used to predict far-field acoustic radiation. The basis of this study is the experimental verification of methods for obtaining the necessary data. Pressure intensity, spectra and cross-correlation data are obtained in three types of jet flows. The characteristic scale of pressure fluctuations is compared to the equivalent velocity scales. Consideration is given to errors associated with frequency response, low frequency cutoff and probe-turbulence interaction. Estimates of the various errors are given and certain correction procedures are suggested. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 04, 1972
- Accession Number
- AD0759377
Entities
People
- Galen L. Barefoot
Organizations
- Pennsylvania State University