In this work, we applied Chebychev spectral collocation method to analyze the unsteady two-dimensional flow of nanofluid in a porous channel through expanding or contracting walls with large injection or suction. The solutions are used to study the effects of various parameters on the flow of the nanofluid in the porous channel. From the analysis, It was established that increase in expansion r...

Abstract A common requirement for turbomachinery testing facilities is the ability to independently control Mach number and Reynolds number. In practice, this means independent of inlet total pressure exit static in a test facility. paper, we present solution problem with particular applicability large-scale annular facilities. We describe design commissioning combined dump diffuser deswirl sys...

Manager & Principal Engineer for Compressors & Expanders with General Electric Oil & Gas Company, in Florence, Italy. He is responsible for all requisition, standardization, and CAD automation activities as well as detailed design of new products for centrifugal compressors, reciprocating compressors and turboexpanders both in Florence (Nuovo Pignone), Le Creusot (Thermodyn), and Oshkosh (AC). ...

This paper presents a comprehensive validation and verification study of turbomachinery Reynolds-averaged Navier-Stokes flow solvers on the transonic axial compressor TUDa-GLR-OpenStage. Two commercial namely Ansys CFX Numeca FineTurbo are adopted to provide benchmark solutions, which can be used for other RANS in future. Based these solvers, five sets grids, two advection schemes (i.e., centra...

Delay in the onset of static stall via passive vortex generators (VGs) results more efficient equipment. Nevertheless, most studies VGs are conducted on wind turbine blades rather than other turbomachinery devices like axial fan blades. This study is feasibility research to see whether aerodynamic performance improves presence VGs. Therefore, VGs' effect a blade with an elliptical profile havin...

Flow visualization is one of many available tools in experimental fluid mechanics and used from the primary stages research order to identify physical sizes locations flow features under consideration. Most fluids engineering applications are transparent (water, air, etc) techniques make their patterns visible. Simple experiments relatively inexpensive they can be easily implemented providing w...

The aim of this paper is to study the effect of slip velocity and shape of stenosis on non-Newtonian flow of blood through a stenosed arterial segment. Blood is modeled as Bingham-Plastic fluid in a uniform circular tube with a radially non-symmetric stenosis. The problem is investigated by a joint effort of analytical and numerical techniques. The influence of stenosis shape parameter, slip ve...