Experimental and numerical study of a water spray in the wake of an axisymmetric bluff body

Chen, X.-Q.; Freek, C.; Pereira, J. C. F.

doi:10.1016/0894-1777(96)00037-4

Cited by 5 publications

(2 citation statements)

References 30 publications

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“…On the contrary, at radial locations far from the spray centreline, relatively larger size droplets are formed with a large fraction of nearly spherical droplets, which might be due to the radial momentum not completely transferred to the globules/droplets forming secondary droplets; also, the normal momentum is partially lost due to the high energy impact of the two-phase flow on the bluff body (cone). The recirculation region behind the bluff body can also affect the droplet trajectory and droplet dispersion based on droplet sizes, as mentioned in Chen et al 32 . After impinging on the bluff body, the larger droplets might follow the outward spray trajectory due to their larger inertia (large radial velocity).…”

Section: Discussionmentioning

confidence: 99%

Atomization characteristics of a bluff body-assisted sonic twin-fluid atomizer

Sikka

Vågsæther

Bjerketvedt

et al. 2022

International Journal of Spray and Combustion Dynamics

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This study examines the gas dynamic effect and atomization behaviour of the sonic bluff body-assisted twin-fluid atomizer with three distinct geometry configurations based on cone distances (Lc) as 6.0 mm, 8.0 mm, and 10.0 mm. The atomization characteristics of these atomizers employing a 280 µm annular liquid sheet with a central bluff body (cone) are compared based on a range of air and liquid flow rates. The spray-bluff body impacted secondary atomization was characterized through volume-normalized droplet size distribution (DSD) & cumulative droplet distribution, excentricity plots, Sauter mean diameter (SMD), and relative span factor (Δ). When plotted for a given liquid flow rate, the DSD & cumulative droplet distribution becomes more uniform with the increase in the airflow rate independent of the cone distance (Lc). Excentricity plots exhibited high excentricity droplets at the spray centreline and a large fraction of nearly spherical droplets at off-centre spray locations. SMD and RSF (Δ) showed opposite trends when plotted against the air-to-liquid ratio (ALR) as SMD increases while RSF decreases with radial locations, respectively. When plotted for all radial locations, Sauter mean diameter (D32) and relative span factor (Δ) show a cluster formation. Larger SMD values correspond to lower RSF (Δ) values and vice-versa.

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Section: Discussionmentioning

confidence: 99%

Atomization characteristics of a bluff body-assisted sonic twin-fluid atomizer

Sikka

Vågsæther

Bjerketvedt

et al. 2022

International Journal of Spray and Combustion Dynamics

View full text Add to dashboard Cite

show abstract

“…The dispersion of discrete particles due to the continuous phase turbulence is accounted for by a stochastic procedure. Numerical investigations of two-phase flows can be found in References [1][2][3][4][5][6][7][8], among others. A recent complete review of numerical models for two-phase turbulent flows can be found in Reference [9].…”

Section: Introductionmentioning

confidence: 99%