Aleš Macálka
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View article: Towards an Agreement Between the Numerical Simulations and the Experimental Data Obtained in a Transonic Linear Turbine Blade Cascade for Flutter Testing
Towards an Agreement Between the Numerical Simulations and the Experimental Data Obtained in a Transonic Linear Turbine Blade Cascade for Flutter Testing Open
The paper reports on the progress in the agreement between the results of numerical simulations and the experimental data obtained in a transonic linear turbine blade cascade for flutter testing. The outcomes show that previously omitted d…
View article: Enhanced Flutter Test Rig for a Transonic Flow in a Linear Turbine Blade Cascade and Numerical Data Validation
Enhanced Flutter Test Rig for a Transonic Flow in a Linear Turbine Blade Cascade and Numerical Data Validation Open
Modern efficient and robust steam turbines must be designed for large operating ranges and run at off-design conditions and high backpressures. Therefore, there is a danger that in some operating conditions, last-stage rotor blades can suf…
View article: Sofia – sCO2 facility for supercritical Brayton cycle research
Sofia – sCO2 facility for supercritical Brayton cycle research Open
In the frame of national project sCO2 Efekt supported by Czech technological agency TAČR, Research Centre Rez (CVR) is developing an innovative, effective and flexible energy storage system. This system is based on the P2H2P (Power to Heat…
View article: EXPERIMENTAL AND NUMERICAL STUDY OF CONTROLLED FLUTTER TESTING IN A LINEAR TURBINE BLADE CASCADE
EXPERIMENTAL AND NUMERICAL STUDY OF CONTROLLED FLUTTER TESTING IN A LINEAR TURBINE BLADE CASCADE Open
In this paper, experimental testing of flutter and numerical simulations using a commercial code ANSYS CFX and an in-house code TRAF are performed on an oscillating linear cascade of turbine blades installed in a subsonic test rig. Bending…
View article: CFD prediction of flutter of turbine blades and comparison with an experimental test case
CFD prediction of flutter of turbine blades and comparison with an experimental test case Open
Last stage blades are a key element of steam turbines and in many ways determine the turbine configuration alongside with the overall turbine performance. The total efficiency of the low pressure turbine section can be increased by extendi…