Articles you may be interested in Decay of the supersonic turbulent wakes from micro-ramps The interaction of helical tip and root vortices in a wind turbine wake Distribution of spanwise enstrophy in the near wake of three symmetric elongated bluff bodies at high Reynolds number Large eddy simulation study of scalar transport in fully developed wind-turbine array boundary layers Phys. Effect o...

Accurate numerical simulations depend on the correct prediction of all relevant flow phenomena. For many aeronautical devices such as turbomachinery the behavior of boundary layers, wall-shear-stress and wall heat transfer are significant for the performance. Turbulence and transition influence such flow characteristics. Onset and extent of transition can therefore be of high importance for the...

Extensively used in modern gas turbine engines various applications, ranging from aerospace, marine and terrestrial propulsion to power generation pumping, the axial flow turbines have been continuously updated are now capable of high performances reliability. One drawback that has not yet resolved is poor performance at lower- than-nominal regimes. To solve these shortcomings, a new method imp...

The main purpose of this work is to conduct coupled CFD analysis of the steam flow in the secondary part of turbine and study thermal rotor/stator steady state. We consider a 11 stage high-pressure cylinder of a power steam turbine with extended terminal labyrinths. Domain of interest is only the secondary flow path of the cylinder, therefore the shroud and blades are beyond the scope of this w...

Axial flow pump system is widely used in marine jet propulsion equipment and stations along the river coastal areas. In order to explore safety reliability of axial system, especially axial-flow areas, response various extreme conditions. this paper, a high-precision full-feature test bench for built, model area manufactured. The experimentally tested under Then numerical predicting full charac...

Power enhancement technologies for gas turbines such as inlet fogging, interstage water injection, saturation cooling, inlet chillers, and combustor injection are being used by end users without evaluating the potentially negative effects these devices may have on the operational integrity of the gas turbine. Specifically, the effect of these add-on devices, off-design operating conditions, non...