Numerical simulation of effect of swirling chamber structure on performance and flow in vortex diode

In this paper,mathematical expressions of some swirl characteristics of typical level hollow swirling flow in inner dissipation discharge tunnel with inlet shaft have been put forward under velocity distribution supposition.

It has been shown that the wall shearing stress is not only influenced by the discharge of the tunnel Q,the rotary flow angle α_w,the moment of tangent velocity C,the difference between the wall pressure and the gassy pressure in level hole rotary flow P_w-P_0,and the hole radius of the level hole rotary flow r_0,but also by the change rate of P_w-P_0 and r_0 along the level.

Investigation of Rayleigh-Benard-like convection stabilities in rotating cavity with axial throughflow of cooling air;

Taking the rotating cavity with micro-turbine as research object,the experimental researches have been applied to study the flow characteristics inside the rotating cavity.

The experiments indicate that PIV technology could be used on the flow measurement of the rotating cavity.

The mean velocity and pressure distribution of the flow in an enclosed rotating disc cavity, which was formed by a rotating disc, a static disc and a static shroud, were experimentally studied.

In this paper the flow and heat transfer inside a rotating disc cavity with different inflow and outflow was studied numerically.

Compared with conventional three straight oil wedges journal bearing,the influence of the oil cavity location angle on bearing performances was studied on a novel spiral oil wedge journal bearing.

Spiral oil wedge hydrodynamic bearing is a novel sliding bearing, and has many outstanding features.