Transducers as a heart of ultrasonic heads are one of the most important parts of systems. Among them, sandwiching, adhesive and screw transducers are more applicable, so the applications of ultrasonic waves will widely ...

This paper introduces an analytical model for oblique and normal penetration of conical projectiles into multi-layer thin metallic targets. Target layers could be arranged either in space or in direct contact to each other. ...

Convergence of the shock wave boundary layer interaction flow calculations is accelerated using a two-dimensional hybrid flux splitting scheme in conjunction with a time-derivative preconditioning method. The ideas of ...

In the present work, numerical computations of the flow and thermal fields have been carried out for a transient, two-dimensional model of thermal and oxidative degradation of polymethylmethacrylate (PMMA) subjected to a ...

In the present work, a numerical analysis has been done to calculate the heat and mass transfer during boiling based on the two-phase annular single component refrigerants in a vertical pipe. The conservation equations of ...

By applying a model of finite differences, the thermal behavior of a large solar pond in the city of Mashhad in the north east of Iran, is studied in this paper. The 32-year data of sunny hours to day-length ratio are used ...

The airflow rate through a two-story building with a courtyard, with and without trees, was estimated and compared with that of a building without a courtyard. The building and the courtyard were of square shapes, each 10 ...

This paper is concerned with the finite element analysis and modal testing of an industrial radial flow impeller. The goal is to determine and verify the vibration characteristics of the impeller using both experimental ...

In hot forming processes, the evolution of microstructural features such as deformation texture and dislocation substructure and their mechanical properties are affected by thermo-mechanical history. In order to analyze ...

In this paper, the performance of the twin-entry radial flow turbine under steady state and partial admission conditions is modeled. The method, which is developed here, is based on one-dimensional performance prediction. ...