Volume 41 Issue 7
Jul.  2026
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Zhang Qi, Hu Zhiyun, Cao Na, et al. Enhancement of transverse jets mixing by using surface V-shaped rib[J]. Journal of Aerospace Power, 2026, 41(7):20240676 doi: 10.13224/j.cnki.jasp.20240676
Citation: Zhang Qi, Hu Zhiyun, Cao Na, et al. Enhancement of transverse jets mixing by using surface V-shaped rib[J]. Journal of Aerospace Power, 2026, 41(7):20240676 doi: 10.13224/j.cnki.jasp.20240676

Enhancement of transverse jets mixing by using surface V-shaped rib

doi: 10.13224/j.cnki.jasp.20240676
  • Received Date: 2024-10-02
    Available Online: 2026-04-22
  • Transverse jets are widely studied and utilized to enhance the mixing within aero-engine combustors. This study introduced a novel micro-scale V-rib which was positioned upstream of the transverse jet to enhance the mixing between the main flow and the jet. The effects of momentum flux ratio, V-rib height, and the distance between the V-rib and the jet nozzle on mixing efficiency were investigated through numerical simulations using the Realizable k-ε turbulence model and Particle Image Velocimetry (PIV) experiments. The results demonstrated that the V-rib generated vortex structures aligned with the kidney shaped vortices in the transverse jet. The mixing between the main flow and the jet can be improved through enhancement of intensity of kidney shaped vortices. For the cases studied, the V-rib-induced kidney shaped vortices merged with the jet’s kidney vortices. This merger increased the overall strength by nearly 70%, resulting in a 16% to 46% increase in jet penetration depth. Furthermore, the V-rib height was found to have a more pronounced effect on the mixing compared with the distance between the V-rib and the jet nozzle. An increase in V-rib height from 0.25D to 0.5D (D is the diameter of the jet nozzle) led to a 5% to 20% increase in jet penetration depth, whereas altering the distance from D to 2D resulted in a mere 3% increase in penetration depth.

     

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