Experimental and numerical investigation of impinging multi-jet system

Khelil, Ali

doi:10.5755/j01.mech.23.2.13900

Cited by 5 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerous studies on heat transfer and fluid flow in jet impinging on rotating surface illustrated the complexity of the fluid flow for simple geometries [11]. The boundary layer development along the impinging wall and the strong streamline curvature in the impinging region are some of the characteristics, which make the flow very complex [12,13]. Therefore, a deep understanding of the flow physics in such impinging jet configurations would be of benefit and can help defining passive and active flow control methods for specific industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Vortex Dynamics in Circular Jet Impinging on Rotating Disk

Hassan

Nobes

2022

Fluids

View full text Add to dashboard Cite

A circular jet impinging perpendicularly onto a rotating disk is studied in order to understand the influence of centrifugal forces on the radial wall jet. Time-resolved Particle Image Velocimetry (TR-PIV) measurements are conducted in different jet regions in order to investigate the flow physics of the large-scale vortical structures and the boundary layer development on the impinging wall for both stationary and rotating impinging disks. The Reynolds number is ReD = 2480, the orifice-to-plate distance H = 4D (D is the jet-orifice diameter) and the rotation rate is 200RPM. It is found that the rotation of the impinging wall results in strong centrifugal effects, which affect different regions of the jet. Both radial velocity profiles and turbulence intensity distributions show different behavior when comparing the stationary and rotating cases. Finite Time Lyapunov Exponent (FTLE) analysis is implemented to describe the time-resolved behavior of the large-scale vortical structures and flow separation.

show abstract

Section: Introductionmentioning

confidence: 99%