Convective heat transfer and friction factor properties for periodic undulating channels are numerically investigated. The finite volume method (FVM) was used in the numerical study. Three different Reynolds averaged simulation (RANS) based turbulence models, shear stress transport SST k-ω transition model were compared with each other. Two used; first geometry is a sharp corrugated channel 30°...

Cortistatin (CST) is a sleep-modulating peptide found exclusively in the brain. Although CST is closely related to somatostatin (SST) and binds to SST receptors, CST has effects on sleep and neuronal activity in cortex and hippocampus that differ from SST. To uncover the cellular mechanisms affected by CST, we studied the electrophysiological postsynaptic effects of CST and assessed its interac...

Steady State Tokamak (SST-1) refurbishment at the Institute for Plasma Research has been recognized and accepted as a Mission activity since Jan 2009 with an ultimate objective of producing the first plasma by the end of 2011. Under the SST-1 Mission mandate, several refurbishment activities have been initiated and pursued vigorously on various sub-systems of SST-1. Developing reliable designs ...

In this study, modeling of a fuel jet which has been injected by high pressure into a low-pressure tank are investigated. Due to the initial conditions and the geometry of this case and similar cases (like CNG injectors in internal combustion engines (ICE)), the barrel shocks and Mach disk are observed. Hence a turbulence and transient flow will be expected with lots of shocks and waves. Accord...

Heavy liquid metals (HLM) are attractive coolants for nuclear fission and fusion applications due to their excellent thermal properties. In these reactors, a high coolant flow rate must be processed in compact heat exchangers, as such, it may convenient have the HLM flowing on shell side of helical coil steam generator. Technical knowledge about turbulent transfer cross-flow tube bundles is rat...

Humpback whales have very special fins, which reduce the friction force by projections on fins and enhance lift with increasing angle of attack. Thus, it has opportunity to move less energy. In this study, tubular structure was formed adapted NACA0012 airfoil profile. Numerical modelling tubercle wing performed in ANSYS FLUENT. numerical modelling, k-ω SST Transition turbulence models were used...

The main purpose of this work is to simulate the flow air and solid particles over a wildfire investigate single multiphase surface custom-designed wing with an Eppler-420 airfoil including appendant blended winglet. result conceptual preliminary design small-scale unmanned aerial vehicle (UAV) designed assist in firefighting. fire embers will be simulated Ansys Fluent commercial code as inject...

A wall–distance–free version of the Spalart–Allmaras (SA) one–equation model is proposed to account for the distinct effects of low-Reynolds number (LRN) and wall proximity. The turbulent kinetic energy k and the dissipation rate ǫ are evaluated using the ν̃t–transport equation together with some empirical relations. The model coefficients/functions preserve the anisotropic characteristics of tu...