Abstract The thermodynamic theory of dislocation/grain boundary interaction, including dislocation pileup against, absorption by, and transfer through the grain boundary, is developed for non-uniform plastic deformations in polycrystals. case study carried out on conditions affecting work hardening a bicrystal subjected to plane constrained shear three types boundaries: (i) impermeable hard (ii...

‎the problem of two-phase mhd boundary layer flow, heat and mass transfer over a stretching sheet with fluid-particle suspension and thermal radiation has been studied. the effect of mass transfer in dusty fluid over a stretching sheet is considered for the first time. the governing equations are reduced to a set of non-linear ordinary differential equations under suitable similarity transforma...

Shock waves generated at different parts of vehicle interact with the boundary layer over the surface at high Mach flows. The adverse pressure gradient across strong shock wave causes the flow to separate and peak loads are generated at separation and reattachment points. The size of separation bubble in the shock boundary layer interaction flows depends on various parameters. Reynolds-averaged...

In this work, simple exact results are presented for summations in two-particle potential with long-range interactions. Polygamma function is used to evaluate summations. Results are found when a periodic media is consider. Periodic boundary conditions are applied by symmetric repetitions of a central cell. Contributions over all space are used in the problem. The potential depends strongly on ...

The Heisenberg XXZ model is a chain model with nearest-neighbor interactions. Its thermodynamics is exactly obtained via Bethe ansatz. Recently, we developed a method to derive the hightemperature expansion of the grand potential per site of translationally invariant chain models, with periodic boundary conditions. Here we apply this approach to the XXZ model with periodic boundary conditions f...

Vehicles accelerating from a high density region in a two lanes system selforganize to a throughput which is equivalent to the the maximum throughput of a closed system with periodic boundary conditions. This holds for both a symmetric and asymmetric set of rules deening the exchange and interactions of the two lanes.

We present results from the simulation of a two-coupling spin-1 model with states 0,±1 and nearest neighbour interaction. By a suitable choice of couplings we are able to drastically reduce the effects of corrections to scaling. Our estimates for the critical exponents are ν = 0.6299(3) and η = 0.0359(10). For the universal ratio Q = 〈m〉/〈m〉 we obtain Q = 0.6240(2). The universal ratio of parti...

Cellular automata (CA) rules possessing additive invariants have been studied since early 90’s. The simplest form of an additive invariant is the sum of all site values over a finite lattice with periodic boundary conditions. Rules with such an invariant are known as number-conserving rules, and they exhibit many interesting properties. For example, they can be viewed as systems of interacting ...

An analytical model for a coastal boundary current was used to investigate heat and salt budget of exchange flows in the Persian Gulf as a marginal sea. Coastal boundary currents exchange heat and freshwater with the mosphere and the offshore waters. As heat and salinity fluxes caused by air-sea interaction and eddy activities, different temperature and salinity associated with boundary current...