A jet flow from a triangular-inlet orifice can be made to oscillate or “precess” by partially confining it with a short cylindrical chamber. However, for a narrow range of chamber lengths, the jet is deflected but does not oscillate. Earlier flow-visualisation experiments with this stationary-deflected triangular jet (SDTJ) have revealed a complex flow pattern inside the chamber. The aim of thi...

Background: Acute intracerebral hemorrhage (ICH) heterogeneity on NCCT, characterized by qualitative and quantitative methods, is predictive of hematoma expansion and mortality however association with the spot sign is not well-described. We sought to validate and determine the association between qualitative and quantitative hematoma heterogeneity with expansion and the spot sign, respectively...

A dry, low-NOx (DLN) combustor for a heavy-duty gas turbine using lean premixed technology was studied. high-fidelity test model built the experimental study particle image velocimetry (PIV). The non-reacting flow in DLN combustion chamber investigated experimentally and numerically. numerical results are good agreement with data. show that recirculation zones were formed downstream of each swi...

This paper presents an experimental analysis of flame-induced enstrophy transport in premixed swirl combustion at Karlovitz numbers between 20-50. Such flames posses a large-scale pressure field that -- addition to the fields associated with small-scale turbulent vortices can interact density gradients produce baroclinic torque. Simultaneous tomographic particle image velocimetry and formaldehy...

The viscous Moore-Greitzer equation modeling the airflow through the compression system in turbomachines, such as a jet engine, is derived using a scaled Navier-Stokes equation. The method utilizes a separation of scales argument, based on the different spatial scales in the engine and the different time scales in the flow. The pitch and size of the rotor-stator pair of blades provides a small ...