The objective of this study is to construct a regime diagram for laminar flames stabilized behind flame holders with respect the presence recirculation zone (RZ), trend heat loss burner, and flow strain curvature effects. This achieved by varying radius cylindrical holder mixture velocity between flashback limit blow-off at fixed equivalence ratio. It found that all holders, RZ vortex not prese...

The staggered charge-order phase of the extended Hubbard model in the atomic limit Abstract We study the phase diagram of the extended Hubbard model in the atomic limit. At zero temperature, the phase diagram decomposes into six regions: three with homogeneous phases (characterized by particle densities = 0, 1, and 2 and staggered charge density = 0) and three with staggered phases (characteriz...

recently, incremental sheet metal forming (ismf) process as one of the new methods in rapid prototyping collection has been considered by researchers. this process is based on a defined path in cnc controller and applies a spherical-head tool that supplies the required pressure for sheet metal forming. despite affirmation of process ability in forming symmetric geometries, some of its aspects s...

In this paper we study the topology effects on diffusion process in signed networks. Considering a simple threshold model for diffusion process, it is extended to signed networks and some appropriate definitions are proposed. This model is a basic model that could be extended and applied in analyzing dynamics of many real phenomena such as opinion forming or innovation diffusion in social netwo...

Abstract In this study, a new test method using protruding punch was proposed, that can separate bending and stretching deformations. test, the blank makes simultaneous contact with head shoulder to ensure constant angle during test. After contact, increasing stroke increases amount of stretch deformation without changing deformation. addition, control inflow materials by controlling BHF, it is...

Abstract The forming limit diagram (FLD) of high-purity niobium sheets used for the manufacturing superconducting radiofrequency (SRF) cavities is presented. Marciniak (in-plane) test was with blanks a thickness 1 mm and blank carriers annealed oxygen-free electronic (OFE) copper. A high formability measured, an approximate true major strain at necking plane 0.44. likely caused by its rate sens...

In the present work focus devoted to results obtained from uniaxial tensile test were utilized analyze flow stress behavior of brass under different orientation, temperature and strain rate conditions study forming limit diagrams for stretch sheet material at room various elevated temperatures have been estimated experimentally by performing operations using warm tooling setup (i.e., suitable p...