Let Ln denote the lowest crossing of the 2n × 2n square box B(n) centered at the origin for critical site percolation on Z 2 or critical site percolation on the triangular lattice imbedded in Z 2 , and denote by Qn the set of pivotal sites along this crossing. On the event that a pivotal site exists, denote the minimum height that a pivotal site attains above the bottom of B(n) by Mn := min{m ≥...

In the present study the problem of mixed convection flow in the presence of magnetic field in a lid-driven square cavity with internal heat generation or absorption and uniform heating of bottom wall were investigated numerically. The square cavity vertical walls are maintained at cold temperature while the upper wall is insulated. The physical problem is then expressed mathematically by a set...

Sedimentation in reservoirs is an important issue that should be considered for the reservoirs operation and useful life. In this study, application of the Adaptive Neuro-Fuzzy Inference System (ANFIS) and Artificial Neural Network (ANN) in prediction of the sediment release from the bottom outlet using semi-cylinder for different variables was evaluated. Dimensionless parameters such as dimens...

A numerical investigation of forced convection in a channel with hot solid block inside a square porous block mounted on a bottom wall was carried out. The lattice Boltzmann method was applied for numerical simulations. The fluid flow in the porous media was simulated by Brinkman-Forchheimer model. The effects of parameters such as porosity and thermal conductivity ratio over flow pattern and t...

Abstract In order to study the seismic behavior of bottom large-bay frame with different special-shaped columns, numerical models columns ordinary, dark and square at are established using finite element analysis in ANSYS. The three type Frame performed nonlinear time-history dynamic method under earthquakes. characteristics response RC conducted. weak parts development plastic hinges on end be...