National Repository of Grey Literature 200 records found  beginprevious191 - 200  jump to record: Search took 0.00 seconds. 
Numerical investigation of flow phenomena in radial-flow pump at low NPSH value
Sedlář, M. ; Maršík, František ; Šafařík, Pavel ; Zima, Patrik
Cavitating flow in the impeller of a single-stage radial-flow pump at optimal flow rate and different values of NPSH (Net Positive Suction Head) is analyzed numerically using the VOF model of CFX-TASCflow. The size and the shape of the cavitation regions near NPSH3 agree well with the cavitation visualization inside the impeller at similar flow conditions.
The influence of back pressure on the flow structure in the mixing chamber of an ejector
Dvořák, V. ; Šafařík, Pavel
The flow in entrance part of the mixing chamber of twodimensional model of supersonic ejector was studied by means of the schlieren method and the interferometric method. Conditions for transonic instability were determined.
Flow in the entrance part of the wind tunnel
Hofer, T. ; Šafařík, P. ; Hyhlík, T. ; Luxa, Martin
paper deals with numerical solution of flow in the entrance part of the wind tunnel. Program FLUENT 6.0 was used for solution of flow of incompressible viscous fluid in axisymmetric channel.
Experimental results of the benchmark cascade SE 1050 for transonic velocity operation
Kladrubský, M. ; Benetka, J. ; Šafařík, Pavel ; Hyhlík, Tomáš ; Kozel, Karel
Aerodymic characteristics from measurement on profile turbine blade cascade SE 1050 in two wind tunnels are presented. A good agreement of results is found out.
Flow structure in the mixing chamber of an experimental model of a supersonic jet
Dvořák, V. ; Šafařík, Pavel
The experimental data of supesonic flow past the model ejector are preseted and analysed.
Realisation of aerodynamic tunnel with interchangeable test sections
Luxa, Martin ; Šafařík, Pavel
The presented work deals with the concept and some specific aspects of construction of new aerod. tunnel.
Transonic flow past a tip blade cascade
Luxa, Martin ; Synáč, J. ; Šafařík, Pavel ; Šťastný, M.
In this paper the results of optical measuring of tip blade cascade are presented.
Modelling of cavitated flows in hydraulic machinery using viscous flow computation and bubble dynamics model
Sedlář, M. ; Maršík, František ; Šafařík, Pavel
Numerical solution of the 3D Reynolds averaged Navier-Stokes equation is based on FEM. The turbulence is modelled through the high Reynolds number k-epsilon model. The cavitation region is modelled as a region of the lower density . The local radius of cavitating bubbles is obtained as a solution of Rayleigh-Plesset equation. The flow past the blades of an axial flow mixer is calculated.
Numerická simulace trojrozměrného proudění ve vstupní části aerodynamického tunelu
Hofer, Tomáš ; Šafařík, Pavel ; Luxa, Martin
The paper deals with numerical solutions of 3D viscous steady flows of incompressible fluid in the entrance nozzle. The turbulent secondary flow in corners is observed. Conventional nozzle and optimized nozzle were compared.

National Repository of Grey Literature : 200 records found   beginprevious191 - 200  jump to record:
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