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The reactors VVER – 440 are cooled and moderated by pressurized water – PWR. The primary coolant is subcooled in the PWR and steam is generated by transferring energy [...]
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Rozehnal, D.
This paper describes stacionary and nonstacionary measurement of aerodynamic characteristics of the airfoil in low speed wind tunnel on the University of Defence Brno. Fi [...]
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The paper presents experimental results of the optical measurements of flow field around a fluttering NACA0015 profile elastically supported with two degrees of freedom i [...]
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The paper assess a behavior and an impact of the air flow on two hangar buildings. For the first hangar the investigation was carried out using both wind tunnel testing [...]
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Veselý, S.
At the present time, the European Union Commission has been discussing new emission levels with the individual member countries. NOx = 50 mgm-3 and CO = 50 mgm-3 levels c [...]
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Outcomes of a numerical simulation of flow through an unbalanced control valve during the turbine's operational modes. A 2D as well as a 3D calculation study is considere [...]
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Large amplitude vibrations of cylindrical structural elements are observed when under the simultaneous action of wind and rain. Due to the action of wind and rain a trans [...]
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We present a Computational Fluid Dynamics (CFD) model that predicts the sedimentation of activated sludge in a full-scale circular secondary clarifier that is equipped wi [...]
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Experimentally investigated pressure pulsation downstream of the control valve cone is presented here. The valve with the mufflers and the flat bottom is compared with th [...]
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This paper deals with a mathematical model of fluid flow in Tee-junction with the 90° angle of adjacent branch and with the same diameter of all branches. There is only [...]
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The work deals with numerical solution of 3D viscous steady incompressible flow of air passing through the entrance part of a new wind tunnel for the Aerodynamic Laborato [...]
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The paper presents the modal synthesis method for a mathematical modelling of rotating bladed disk vibration. The standard finite element software does not allow to cons [...]
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Losík, V.
So far the static as well as dynamic aeroelastic tasks have been commonly solved by using linear models of fluid flow (p-k method, DLM) implemented e.g. in system MSC.Nas [...]
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The paper presents CFD simulation of flow over a wavy surface for selected geometric configurations and external flow velocities. The simulation characteristics and resul [...]
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This paper is concentrated on modelling of friction effects in bladed disk of steam turbine, which are realized by means of friction elements placed between blades shroud [...]
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Schuster, M.
This paper is a short overview of engineering approach to study rail vehicles aerodynamics and aerodynamic interaction between the trains and vicinity infrastructures. Sh [...]
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This paper is concerned with mathematical modeling of the imperfect bladed disk with friction elements, which are used to suppress blade vibration. These kinds of systems [...]
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The basic form of the exhaust hood for single flow arrangement of steam turbine was designed by the experience from the optimization process of hoods for double flow arra [...]
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Presented paper deals with computational fatigue strength prediction of high pressure level steam turbine blade pin joints. Quazi-static FE analysis of one turbine disk s [...]
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This paper presents a simulation of 3D curved crack propagation in a steam turbine blade lock. These fatigue cracks are often initiated near a blade root contact zone. Tw [...]
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The principle of a steam turbine balanced control system is presented here. The dynamic stress measurement method in parts of valves on its models in the aerodynamic wind [...]
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The research focuses on developing a new type of vertical axis wind power generator, in which fan-shaped up-structure with floating foundation on water is used to catch t [...]
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Are given the results of the calculation study of the streaming in the stage with different admission rates and in the chamber between grades (stages) with different admi [...]
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A stage with impulse blading on a drum rotor is considered. Steam leakage through the shroud and shaft sealing has been determined by means of a numerical simulation. The [...]
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The point of this paper is the comparison between the different kind of shapes turbine blades in relation to efficiency of the stage. The first part of the paper deals wi [...]
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The paper describes effects of end wall shaping in guide blades on steam turbine stage efficiency. CFD and measurement of straight blade cascades in a wind tunnel were pe [...]
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Experimental investigation of profile and secondary losses is presented here. The loss coefficients of different types of blade cascades are evaluated, the efficiency of [...]
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