This study presents 2-D simulations of a flow-through sudden expansion/contraction micro-channel with the existence obstacles. The bottom wall is maintained at constant flux, while other walls are adiabatic. Rectangular adiabatic obstacles mounted before expansion region on upper and lower channel used. finite element method was used to discretize equations that govern physical model. Results i...

Abstract Numerical simulations are performed for the forward and backward injection film cooling with presence of upstream ramp under three typical blowing ratios 0.5, 1.0 1.5. Totally nine configurations taken into considerations in current study, where two ramps (straight-wedge-shaped (SWR) sand-dune-shaped (SDR)), coolant modes (forward (FW) (BW)), film-hole shapes (cylindrical hole (CH) fan...

different patterns of pressure systems together with local factors, leads in generation, risingand spread of dust in west of iran. in this study, to investigate the factors causing the occurrence of dust inkermanshah province, 132 cases of dust phenomena (code: 06) were selected and analyzed using kermanshahsynoptic station data for the spring and summer seasons in a period of 5 years (2005-200...

Certain quantum devices, such as half-wave plates and quarter-wave in optics, are bidirectional, meaning that the roles of their input output ports can be exchanged. Bidirectional devices used a forward mode backward mode, corresponding to two opposite choices input-output direction. They also coherent superposition modes, giving rise new operations with indefinite In this work we explore poten...

We describe two methods for detecting horizontal gene transfers in the framework of the complete and partial gene transfer models. In case of a complete gene transfer model a new fast backward selection algorithm for predicting horizontal gene transfer events is presented. The latter algorithm can rely either on the metric or on the topological optimization to identify horizontal gene transfers...