Computational fluid dynamics (CFD) is a powerful numerical tool that is becoming widely used to simulate many processes in the industry. In this work study of the stirred tank with 7 types of concave blade with CFD was presented. In the modeling of the impeller rotation, sliding mesh (SM) technique was used and RNG-k-ε model was selected for turbulence. Power consumption in various speeds in th...

Molecular dynamics (MD) simulations confirm that normal grain boundary (GB) motion must often be coupled to tangential translation of grains and will then produce shear deformation of the lattice traversed by the GB. Conversely, shear stresses applied to a GB can induce its normal motion. Using [001] symmetrical tilt GBs in copper as a model, the coupling factor b between the GB motion and grai...

The motion of a car is described using a stochastic model in which the driving processes are the steering angle and the tangential acceleration. The model incorporates exactly the kinematic constraint that the wheels do not slip sideways. Two lters based on this model have been implemented, namely the standard EKF, and a new lter (the CUF) in which the expectation and the covariance of the syst...

This is of nonlinear an exposition of the variational and differential properties spline curves, based on the Euler-Bernoulli theory for the bending of thin beams or elastica. For both open and closed splines through prescribed nodal points in the euclidean plane, various types --. of nodal constraints are considered, and the corresponding algebraic and differential equations relating curvature...

Abstract The aim of this study was to evaluate color characteristics in wood samples from Acacia mangium a homogeneous plantation Bahia state, northeast Brazil, and also analyze the influence anatomical section radial position trunk on response contribute information for best use wood, such as, example, optimization performance pieces sawmill through most acceptable aesthetic form by final cons...

In this paper, a two-dimensional computational model is proposed for predicting the initiation position and propagation path of subsurface crack of spur gear tooth flank. In order to simulate the contact of teeth, an equivalent model of two contacting cylinders is used. The problem is assumed to be under linear elastic fracture mechanic conditions and finite element method is used for numerical...

A Bayesian regularization-backpropagation neural network (BR-BPNN) model is employed to predict some aspects of the gecko spatula peeling, viz. variation maximum normal and tangential pull-off forces resultant force angle at detachment with peeling angle. K-fold cross validation used improve effectiveness model. The input data taken from finite element (FE) results. trained 75% FE dataset. rema...