The mixing of air jets into hot, fuel-rich products of a gas turbine primary zone is an important step in staged combustion. Often referred to as “quick quench,” the mixing occurs with chemical conversion and substantial heat release. An experiment has been designed to simulate and study this process, and the effect of varying the entry angle (0°, 22.5°, and 45° from normal) and number of the a...

This paper presents numerical simulation results of the primary atomization of a turbulent liquid jet injected into a gaseous crossflow. Simulations are performed using the balanced force Refined Level Set Grid method. The phase interface during the initial breakup phase is tracked by a level set method on a separate refined grid. A balanced force finite volume algorithm together with an interf...

Pulsed jet is an effective solution to improve fuel penetration depth and consequently increase the mixing efficiency of gas–liquid in conventional combustion chambers. This has benefits reducing pollutant emissions diminishing instability combustion. However, atomization process pulsed jets with small amplitude still not been properly investigated. paper studies such a through Large Eddy Simul...

In supersonic-combustion ramjets (scramjets), fuel is injected, which should mix rapidly with the supersonic crossflow to minimize length of scramjet. Tandem dual-jet injection has shown improved mixing performance over single-jet injection. However, experiments on tandem have not addressed jet shear layer, in occurs, yet. The present study investigates as well bow shocks front jets, a continuo...

Double-wall cooling structures are commonly used to enhance the heat transfer in combustor liner and aerofoil internal within gas turbine engines other industrial applications. This is first study adopt a novel reverse jet impingement technique into double-wall structure order achieve higher rate with relatively lower pressure drop. paper uses computational fluid dynamics crossflow, nozzle conf...