12 articles in this issue
Attilio Brighenti, Davide Duranti and Debora Quintabà
Dynamic simulation of turbomachinery by Hardware in the Loop (HIL) real-time systems has become an essential practice, due to the high cost of real equipment testing and the need to verify the control and diagnostic systems’ reaction to emergency situatio... see more
Isak Jonsson, Valery Chernoray and Radheesh Dhanasegaran
Aerothermal heat transfer measurements in fluid dynamics have a relatively high acceptance of uncertainty due to the intricate nature of the experiments. The large velocity and pressure gradients present in turbomachinery application add further complexit... see more
Julien Marty and Cédric Uribe
The present study focuses on the impact of the underlying RANS turbulence model in the Zonal Detached Eddy Simulation (ZDES) method when used for secondary flow prediction. This is carried out in light of three issues commonly investigated for hybrid RANS... see more
Soheil Jafari, Ahmed Bouchareb and Theoklis Nikolaidis
This paper presents a methodological approach for mathematical modelling and physics-based analysis of accessory gearbox (AGB) thermal behavior in gas turbine aero engines. The AGB structure, as one of the main sources of heat in gas turbine aero engines,... see more
Lucian Hanimann, Luca Mangani, Ernesto Casartelli, Damian M. Vogt and Marwan Darwish
In the majority of compressible flow CFD simulations, the standard ideal gas state equation is accurate enough. However, there is a range of applications where the deviations from the ideal gas behaviour is significant enough that performance predictions ... see more
Umberto Coronetta and Enrico Sciubba
In the last few years, waste-energy recovery systems based on the Organic Rankine Cycle (ORC) have gained increased attention in the global energy market as a versatile and sustainable technology for thermo-electric energy conversion from low-to-medium te... see more
Markus Wunderlich, Alexander Esper, Manfred Wirsum and Klaus Buchmann
This paper presents results of strain gauge measurements, which have been carried out on a full-scale turbocharger test rig. Rotational speed of the turbocharger was ramped up and down through four preliminary anticipated rotor-blade resonances, with a kn... see more
Ken-Ichiro Takeishi, Robert Krewinkel, Yutaka Oda and Yuichi Ichikawa
In the near future, when designing and using Double Wall Airfoils, which will be manufactured by 3D printers, the positional relationship between the impingement cooling nozzle and the heat transfer enhancement ribs on the target plate naturally becomes m... see more
Gabriel Margalida, Pierric Joseph, Olivier Roussette and Antoine Dazin
The present paper aims at evaluating the surveillance parameters used for early stall warning in axial compressors, and is based on unsteady pressure measurements at the casing of a single stage axial compressor. Two parameters—Correlation and Root Mean S... see more
Fabrice Giuliani, Lukas Andracher, Vanessa Moosbrugger, Nina Paulitsch and Andrea Hofer
The need for better combustion monitoring in gas turbines has become more acute with the latest technical requirements, standards, and policies in terms of safety, environment, efficiency, operation flexibility, and operation costs. Combustion Bay One e.U... see more
Nicolas Lachenmaier, Daniel Baumgärtner, Heinz-Peter Schiffer and Johannes Kech
A turbocharger’s radial turbine has a strong impact on the fuel consumption and transient response of internal combustion engines. This paper summarizes the efforts to design a new radial turbine aiming at high efficiency and low inertia by applying two d... see more
Pedro J. Sousa, Francisco Barros, Paulo J. Tavares and Pedro M. G. P. Moreira
Rotating structures are important and commonly used in the transportation and energy generation fields, where a better understanding of the deformations these structures endure is essential for both the design and maintenance phases. This work presents a ... see more