For propulsion systems using gel fuels, reducing the fuel viscosity is essential for achieving better atomization and combustion. In this paper, we investigate flow heat transfer in a water-gel with temperature shear dependent viscosity. We consider several different channels, mimicking transport of gelled fuels systems, also look at corrugation, which way enhancing fluid mixing thus improving ...

The generalized channel Boussinesq (gcB) two-equation model and the forced channel Kortewegae Vries (cKdV) one-equation model previously derived by the authors are further analysed and discussed in the present study. The gcB model describes the propagation and generation of weakly nonlinear, weakly dispersive and weakly forced long water waves in channels of arbitrary shape that may vary both i...

Canonical-ensemble Monte Carlo simulation and an improved fundamental-measure theory are applied to calculating the structures and chemical potentials of neutral and associating spherical particles confined in rectangular or corrugated microchannels. It is found that the confinement significantly affects the distributions of neutral spheres in the microchannels, especially at high densities or ...

In the present investigations heat transfer studies are made in three different types of corrugated plate heat exchangers having a length of 30 cm and width of 10 cm. The corrugated channel has a spacing of 5 mm. Three different corrugation angles are used in this study which are 30 0 , 40 0 and 50 0 . Water is taken as test fluid as well as the heating medium. The wall temperatures are measure...

We show that when particles are suspended in an electrolyte confined between corrugated charged surfaces, electrokinetic flows lead to a new set of phenomena such as particle separation, mixing for low-Reynolds micro- and nanometric devices, and negative mobility. Our analysis shows that such phenomena arise, for incompressible fluids, due to the interplay between the electrostatic double layer...

  In this numerical study the the heat transfer and laminar nanofluid flow in the three-dimensional microchannels with triangular cross-section is simulated. For increase the heat transfer from the walls of the channel, semiattached & offset mid- truncated rib,s Placed in the canal, and the tooth geometry and the impact is studied. In this study, the water is base fluid, and the influence of th...

Title of Document: INTERACTION OF LASERS WITH ATOMIC CLUSTERS AND STRUCTURED PLASMAS John Patrick Palastro, Ph. D, 2007 Directed By: Professor Thomas M. Antonsen Jr., Physics We examine the interaction of intense, short laser pulses with atomic clusters and structured plasmas, namely preformed plasma channels. In examining the laser pulse interaction with atomic clusters we focus on the optical...

Corrugated structured packings feature strong preferential flow directions due to their structure of crossing triangular channels. This leads to good radial spreading but makes modelling a challenge. Detailed CFD calculations reflecting the exact packing structure are only feasible for small sections of packing. However, effects like large scale maldistribution and instabilities in the flow fie...