The interaction of a turbulent, spatially developing crossflow with transverse jet possesses several engineering and technological applications such as film cooling turbine blades, exhaust plumes, thrust vector control, fuel injection, etc. Direct Numerical Simulation (DNS) in under different streamwise pressure gradients (zero favorable gradient) is carried out. purpose to study the physics be...

A technique that combines two-photon excitation (TPE), planar laser induced fluorescence (PLIF) and optical connectivity (OC) has been applied to capture the instantaneous geometry of a cross-section normal main direction core liquid jet exposed crossflow air during atomisation. This paper demonstrates nanosecond pulse can excite in an atomising Rhodamine B-dyed water jet. It shows TPE-PLIF on ...

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. 461 Contributions of the wall boundary layer to the formation of the counter-rotating vortex pair in transverse jet...

Implicit large-eddy simulation/Reynolds-averaged Navier-Stokes hybrid simulation of sheet-like hydrogen jets in a supersonic crossflow are performed to investigate jet mixing, focusing on the difference flow structures between and round jets. The is validated with helium experiment terms mean concentration. numerical results showed good agreement experimental results. A characteristic injection...

Many gas turbine combustion systems employ swirl to help mix fuel and air and subsequently stabilize the reaction. In the case of liquid fuels, strategic introduction of the liquid into the swirling flow can provide improved combustion performance. In the present work, radial injection of a plain jet into a swirling flow is considered. A large body of work is available in the literature for liq...

The mixing properties of a transverse jet are important to a variety of engineering applications. This study seeks to develop actuation strategies that manipulate the geometry and rate of mixing between jet and crossflow, based on a mechanistic understanding of vorticity structure and evolution. Previous studies have shown that vorticity from both the jet boundary layer and the channel wall bou...

Jet vortex generators have been proven to provide a mechanism to positively control boundary layer flows. The present paper illustrates a method to perform direct numerical simulations (DNS) of a jet actuator flow inside a laminar boundary layer. A structured finite difference method is used for the simulations. The numerical scheme was adapted to account for the large scale differences both in...