breaking waves have ability to transport large quantities of sediment and significant impact on coastal structures morphology. hence, modeling of wave breaking is an important subject in coastal and marine engineering. in this research, the periodic wave breaking process on a plane slope is studied experimentally and numerically. laboratory experiments were conducted to record water surface ele...

In the past decade, efforts have been focused on developing very fine, medium-carbon bainitic steels via low-temperature (typically 300–400 °C) ausforming process, which not only enables shorter isothermal holding times for transformation at low temperatures, but also offers significantly improved strength. This paper describes static recrystallization (SRX) characteristics of austenite in four...

Hardening is the core factor to determine deformation uniformity in sheet metal forming. Hot of titanium alloy sheets encounters coupled effects strain hardening, rate hardening and softening, which makes determination forming parameters aiming for an enhanced very difficult practical processes. This paper presents a new model quantify Ti-6Al-4 V under hot conditions based on underlying correla...

Abstract Precise determination of the course phase boundaries is particularly important for alloys operating at elevated temperatures. In case multi-component materials such as nickel superalloys, computational methods are often used this purpose. They based on binary and ternary systems require reliable experimental data. Commonly research determining temperature have a number limitations it d...

in this paper, direct numerical simulation of two-phase incompressible gas-liquid flow for simulation of bubble motion in a microtube is presented. microtube radius is 10 µm. the interface is tracked using volume of fluid (vof) method with continuous surface force (csf) model. the flow is solved using a finite volume scheme, based on piso algorithm. numerical simulation is performed on a axisym...

the understanding of the dynamic behavior of distillation columns has received considerable attention because distillation is one of the most widely used unit operations in chemical process industries. this paper reports a dynamic simulation study of the possible distillation columns sequences of dew pointing unit in the second phase of south pars gas refinery. in this unit, three columns are u...

the study of wave and its propagation on the water surface is among significant phenomena in designing quay, marine and water structures. therefore, in order to design structures which are exposed to direct wave forces, it is necessary to study and simulate water surface height and the wave forces on the structures body in different boundary conditions. in this study, the propagation of static ...

abstract: in this paper, the results of experimental and numerical simulation of low velocity impact process have been carried out to investigate energy absorption of composite sandwich panels with 3d woven fabrics of glass fibers and epoxy resin. for this purpose, diagrams of force-displacement of the quasi-static and quasi-dynamic impact tests were studied. for the finite element simulation, ...