Πλοήγηση ανά Θέμα "Microchannels"
Αποτελέσματα 1-10 από 10
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Couette flow with heat transfer in the whole range of the Knudsen number
(2008)The steady-state one-dimensional flow of a gas between two parallel plates moving with relative velocity and maintained at different temperatures is examined on the basis of the non-linear Bhatnagar-Gross-Krook (BGK) model ... -
Design guidelines for thermally driven micropumps of different architectures based on target applications via kinetic modeling and simulations
(2019)The manufacturing process and architecture of three Knudsen type micropumps are discussed and the associated flow performance characteristics are investigated. The proposed fabrication process, based on the deposition of ... -
DSMC simulation of pressure driven binary rarefied gas flows through short microtubes
(2011)Binary gas flows driven by pressure gradient through short microtubes are studied by using an upgraded version of the Direct Simulation Monte Carlo (DSMC) method. Two types of mixtures, He/Xe and Ne/Ar, are examined. Several ... -
Gas flow in a grooved channel due to pressure and temperature gradients
(2006)The flow of a gas in a grooved nano or micro channel, due to the imposed pressure and temperature gradients in the longitudinal direction, is investigated via a kinetic approach. The solution is valid in the whole range ... -
Oscillatory heating in a microchannel at arbitrary oscillation frequency in the whole range of the Knudsen number
(2012)The oscillatory heating in a microchannel is investigated on the basis of linear kinetic theory. In particular, the linearized unsteady Shakhov kinetic model, subject to Maxwell boundary conditions is numerically solved ... -
Polyatomic thermal creep flows through long microchannels at large temperature ratios
(2019)Rarefied polyatomic gas flows through long microchannels of circular cross section due to small temperature and pressure gradients have been studied on the basis of the Rykov model in a wide range of the gas rarefaction ... -
Simulation of gaseous microscale transport phenomena via kinetic theory
(2010)Kinetic theory of gases, as described by the Boltzmann or model kinetic equations, provides a solid theoretical approach for solving microscale transport phenomena in gases. Due to significant advancement in computational ... -
SPH BASED STUDY OF CONFINED MICROFLOWS CHARACTERIZED BY ABRUPT CHANGES IN CROSS-SECTIONAL AREA
(2021)In this paper, we investigate the application of Smoothed Particle Hydrodynamics (SPH) method to the computation of flows in microchannels with sudden expansion. Numerical modeling with SPH involves the treatment of flowing ... -
Thermally driven pumps and diodes in multistage assemblies consisting of microchannels with converging, diverging and uniform rectangular cross sections
(2020)Thermal transpiration pumping in multistage assemblies is computationally investigated. Each stage is formed by combining in series-long microchannels with (a) uniform–uniform (“uni–uni”), (b) converging–uniform (“con–uni”), ... -
Water Purification in Micromagnetofluidic Devices: Mixing in MHD Micromixers
(2016)This contribution addresses a possible solution for water purification from heavy metals by magnetic nanoparticles in microfluidic water flow systems. In this technique, the most important component is the micromixer while ...