wall-jet flow is an important flow field in hydraulic engineering, and its applications include flow from the bottom outlet of dams and sluice gates. in this paper, the plane turbulent wall jet in shallow tailwater is simulated by solving the reynolds averaged navier-stokes equations using the standard  turbulence closure model. this study aims to explore the ability of a time splitting method ...

This article explores the awareness and level of implementation of e-business in European small and medium size enterprises (SMEs) primarily operating in the manufacturing sector. The results of a survey of 232 small firms are used to identify the challenges and responses faced by SMEs. Finally, the author provides a research agenda and suggests paths which might be followed by such firms in se...

This research aims to find out the implementation of strategies that can be carried by SMEs in order build a framework for era 4.0. presents concept technology transformation development strategy SMEs. The method this is utilized qualitative approach, using SWOT tools combined with Business Model Canvas results study identified factors company's face 4.0, especially Borondong Industry case stud...

We are living in a world of on-demand communication. Today ́s turbulent business world, require companies to continually update their skills and capacities. Companies are exploring ways to align and integrate technology-based learning into business processes and strategy. On-demand collaboration is a new trend that is driving higher levels of connectedness than ever before, and which is greatly ...

turbulent mixed convection of a nanofluid (water/al2o3, φ=.02) has been studied numerically. two-phase mixture model has been used to investigate the effects of nanoparticles mean diameter on the flow parameters. nanoparticles distribution at the tube cross section shows that the particles are uniformly dispersed. the non-uniformity of the particles distribution occurs in the case of large nano...

1. Introduction A great variety of flows with importance to practical engineering applications are inherently unsteady and virtually all of the Newtonian fluid flows in nature are turbulent. Therefore, it is natural and unavoidable to deal with unsteady turbulent flows when Computational Fluid Dynamics (CFD) techniques are applied to engineering design and industrial use. CFD for general fluid ...

in this paper, analysis of fluid flow and heat transfer over the bank of tubes is considered. k-ω sst model is applied for simulation of turbulent flow. in this paper, the improvement of efficiency of a bundle of circular tubes by changing the shape of the cross section of one row of the pipes to the elliptical cross section as an innovative plan is considered. as know, friction factor in turbu...

In the present study, flow over flat and pooled stepped spillways was simulated three dimensionally. The VOF method and k- ε (RNG) turbulent model was used to simulate the flow over the stepped spillway. The results indicated that the numerical model was acceptably capable of simulating the flow over the pooled and flat stepped spillways for different discharges. Following that, the effect of d...