Numerical Investigations of Slip Effects on Rarefied Gas Flows by First and Second-Order Slip Boundaries

Simulation of Roughness Shape and Distribution Effects on Rarefied and Compressible Flows at Slip Flow Regime

A numerical simulation of micro Poiseuille flow has performed for rarefied and compressible flow at slip flow regimes. The wall roughness is simulated in two cases with triangular microelements and random micro peaks distributed on wall surfaces to study the effects of roughness shape and distribution on flow field. Two values of Mach and Knudsen numbers have used to investigate the effects of ...

effects of first language on second language writing-a preliminary contrastive rhetoric study of farsi and english

to explore the idea the investingation proposed, aimed at finding whether the performances of the population of iranians students studying english in an efl context are consistent in l1 and l2 writing taks and whether there is a cross-linguistic transfer in this respect. in this regard the subjects were instructed to write four compositions-two in english and two in farsi-which consisted of an ...

A slip model for rarefied gas flows at arbitrary Knudsen number

Validation of a Second-order Slip Model for Transition-regime, Gaseous Flows

We discuss and validate a recently proposed secondorder slip model for dilute gas flows. Our discussion focuses on the importance of quantitatively accounting for the effect of Knudsen layers close to the walls. This is important, not only for obtaining an accurate slip model but also for interpreting the results of the latter since in transition-regime flows the Knudsen layers penetrate large ...

Analysis of Thermal Slip in Oscillating Rarefied Flow Using Dsmc

In this study, the nonequilibrium effects at the stagnation wall in one-dimensional unsteady micro ow responding to the external sinusoidal oscillation are investigated. The  uctuating behavior of the rareŽ ed medium is simulated by employing the unsteady DSMC method under various conditions with different acoustic Reynolds and Knudsen numbers. As a result, it is found that the nonequilibrium...