Structure of nonevaporating sprays. I - Initial conditions and mean properties

• Published in: AIAA journal 1985-10, Vol.23 (10), p.1548-1555
• Main Authors: Solomon, A. S. P, Shuen, J.-S, Zhang, Q.-F, Faeth, G. M
• Format: Article
• Language: English
• Subjects: Applied sciences; Exact sciences and technology; Fluid Mechanics And Heat Transfer; Other techniques and industries
• ISSN: 0001-1452; 1533-385X
• DOI: 10.2514/3.9122

Structure measurements were completed within the dilute portion of axisymmetric nonevaporating sprays. Measurements included: mean velocities, velocity fluctuations, and Reynolds stress of the gas phase; and mean velocities, fluctuating velocities, mass flux, and diameter distributions of the drop phase. The measurements were used to evaluate three typical methods of analyzing sprays: (1) a locally homogeneous flow (LHF) analysis, where slip between the phases is neglected; (2) a deterministic separated flow (DSF) analysis, where slip is considered but effects of drop interactions with turbulence are ignored; and (3) a stochastic separated flow (SSF) analysis, where effects of both slip and turbulence are considered using random-walk computations for drop motion. Measurements of initial conditions of both phases near the injector, mean gas-phase properties, and liquid flux distributions are described herein. Best agreement between predictions and measurements was obtained with the SSF model, which provided a reasonable representation of turbulent dispersion of drops. A companion paper presents additional measurements of drop continuous phase properties.