Similarity scaling of the axisymmetric turbulent jet

Abstract

In the current work, we find that a free axisymmetric jet in air displays self-similarity in the fully developed part of the jet. We report accurate measurements of first, second and third order, spatially averaged statistical functions of the axial velocity component performed with a laser Doppler anemometer, including in the outer (high intensity) regions of the jet. The measurements are compared to predictions derived from a simple jet model, described in a separate publication, and we discuss the implications for the further study of self-similarity in a free jet. It appears that all statistical functions included in this study can be scaled with a single geometrical scaling factor -- the downstream distance from a common virtual origin.

References in corpus (5)

• Estimation of burst-mode LDA power spectra
• Measurement of turbulent spatial structure and kinetic energy spectrum by exact temporal-to-spatial mapping
• A novel laser Doppler anemometer (LDA) for high-accuracy turbulence measurements
• A similarity scaling model for the axisymmetric turbulent jet based on first principles
• Two-point similarity in the round jet revisited

Cited by in corpus (3)

• Understanding developing turbulence by a study of the nonlinear energy transfer in the Navier-Stokes equation
• A similarity scaling model for the axisymmetric turbulent jet based on first principles
• Dynamic Triad Interactions and Evolving Turbulence -- Part 2: Implications for Practical Signals