The present results are focused on the self-sustained oscillations of a confined impinging slot jet and their role in flow structure modeling requirements. Unsteady laminar, large-eddy simulation (LES), Reynolds-averaged Navier–Stokes (RANS) predictions an isothermal were validated for several nozzle-to-plate ratios (H/B=4–15) laminar (Re=340 480) turbulent (Re=104–2.7×104) conditions. was foun...

This letter describes the flow kinematics and stability of thin fluid sheets produced by impinging obliquely aligned laminar jets of a series of viscoelastic wormlike micelle solutions. As the velocity of the impinging jets is increased, the sheets of viscoelastic fluid grow larger and eventually become unstable. High speed imaging reveals a transition through a series of striking new flow stru...

The flow field and erosion pattern of continuous and pulsating impinging jets has been studied experimentally. The mean velocity field as well as turbulent and pulsation components, wall pressure and wall shear stress distr ibutions were investigated in an axisymmetric air jet impinging upon a rough wall. The results show how harmonic velocity pulsations at the nozzle affect both the mean and t...

The mixing characteristics of coolant air jets with the hot gas exiting the gas turbine combustor’s primary zone is of major importance to the combustor exit temperature profile. In the present work, a three dimensional numerical simulation on the basis of the finite volume method was developed. The aim was to investigate the penetration and mixing characteristics of directly opposed rows of co...

Many hydrophobic drugs are difficult to formulate in ways that ensure high bioavailability. The formation of stable drug nanosuspensions is an attractive formulation strategy that does not limit the dosage amount. Microfluidics Reaction Technology (MRT) was used to produce drug nanosuspensions via solvent and anti-solvent crystallization. The core of this technology is a continuous and scalable...

atomization is a process by which a volume of liquid is converted spray. this process includes the breakup of the liquid jet or the liquid sheet exiting the injector. this paper has experimentally investigated the models and mechanisms for the breakup of the liquid jet and the liquid sheet formed by the jets impingement in a still environment and in an environment with counter flow, coflow, and...