A 3D simulation study for an incompressible slip flow around a spherical aerosol particle was performed. The full Navier-Stokes equations were solved and the velocity jump at the gas-particle interface was treated numerically by imposition of the slip boundary condition. Analytical solution to the Stokesian slip flow past a spherical particle was used as a benchmark for code verification, and e...

Suspension (particle-based) arrays offer several advantages over conventional planar arrays in the detection and quantification of biomolecules, including the use of smaller sample volumes, more favorable probe-target binding kinetics, and rapid probe-set modification. We present a microfluidic system for the rapid alignment of multifunctional hydrogel microparticles designed to bear one or sev...

The interaction of an ion-collecting sphere at floating potential with a flowing collisionless plasma is investigated using the particle in cell code SCEPTIC. The dependence of floating potential on flow velocity for a conducting sphere is found to agree very well with the OML approximation, which ignores the asymmetry in the plasma potential. But the charge, even on conducting spheres and at z...

the understanding soil erosion processes and the development of accurate erosion prediction models require understanding of detachment, deposition and sediment transport in rills. to evaluate the effect of soil type and flow stream power on the relative importance of flow driven processes of sediment transport, and on the boundary between the processes regarding to particle size, experiments we...

The present investigation has been carried out from Lagrangian perspective to study the flow field arising due to two and three inviscid and fixed vortex filaments with their axes mutually perpendicular to each other. The equations governing the motion of a fluid particle are a set of three nonlinear ordinary differential equations. For two vortices, the existence of fixed points has been found...

dependence on chemical fertilizer continually is increasing. continual increasing of using chemicalfertilizer causes nature pollution (e.g. water contamination). this has led researchers to aggressively investigate renewable fertilizer resources, biomass, to produce organic crops and reduced wastage. wormy compost is a bulk solid and biomass feed stocks. wormy compost flow is obstacle as it oft...

We describe the first parallel implementation of an adaptive particle-particle, particle-mesh code with smoothed particle hydrodynamics. Parallelisation of the serial code, " Hydra " , is achieved by using CRAFT, a Cray proprietary language which allows rapid implementation of a serial code on a parallel machine by allowing global addressing of distributed memory. The collisionless variant of t...

The objectives of this research are (1) to parallelize a suite of multiregion groundwater flow and solute transport codes that use Galerkin and LagrangianEulerian finite element methods, (2) to test the compatibility of a global shared memory emulation software with a High Performance FORTRAN (HPF) compiler, and (3) to obtain performance characteristics and scalability of the parallel codes. Th...

Title of Thesis: FLUID AND PARTICLE DYNAMICS IN AN AEROSOL VIRTUAL IMPACTOR Marwan L. Charrouf, Master of Science, 2004 Thesis Directed by: Professor Richard V. Calabrese Department of Chemical Engineering The collection and characterization of chemical and biological aerosols is essential to many areas of particle research such as toxicological studies, pollutant sampling, and biohazard assess...