|
|
|
|
|
Jiaxin Zhang, Kan Hong, Yeping Yuan, Ying-Tien Lin and Dongrui Han
A three-dimensional numerical model was established with OpenFOAM-5.x to investigate plume characteristics under windless and rainless weather conditions. The large eddy simulation was applied, combined with a modified solver for solving governing equati...
ver más
|
|
|
|
|
|
|
|
|
|
|
Xavier Flete, Nicolas Binder, Yannick Bousquet and Sandrine Cros
In the current study, full-stage unsteady simulations were performed to investigate rotating instability inception mechanisms in a particularly large tip clearance centrifugal compressor with a vaneless diffuser and a volute. Four operating points along ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Xin Qian, Yu Fan, Yaguang Wu, Wenjun Wang and Lin Li
Stability analysis of lateral?torsional coupled vibration is obligatory for rotating machinery, such as aero-engines. However, the state-of-the-art method may lead to stability misjudgment under different coordinate systems. The cause of this misjudgment...
ver más
|
|
|
|
|
|
|
|
|
|
|
Bingyue Jia, Yining Zhang, Hao Meng, Fanxiao Meng, Hu Pan and Yanji Hong
Rotating detonation engines (RDEs) are a promising propulsion technology featuring high thermal efficiency and a simple structure. To adapt the practical engineering applications of ramjet RDEs, rotating detonation combustion using a liquid hydrocarbon a...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ge Hu, Qiongyao Qin, Wu Jin and Jianzhong Li
Centrally staged combustion technique is often used in the military high-temperature-rise combustor. The pilot-stage structure affects the flow characteristics in the centrally staged combustor, which further affects the performance of ignition, combusti...
ver más
|
|
|
|
|
|
|
|
|
|
|
Alberto Baretter, Benjamin Godard, Pierric Joseph, Olivier Roussette, Francesco Romanò, Raphael Barrier and Antoine Dazin
On many occasions, fan or compressor stages have to face azimuthal flow distortion at inlet, which affects their performance and stability. These flow distortions can be caused by external events or by some particular geometrical features. The aim of thi...
ver más
|
|
|
|
|
|
|
|
|
|
|
Fabrice Giuliani, Markus Stütz, Nina Paulitsch and Lukas Andracher
A siren is a robust fast-valve that generates effective flow pulsations and powerful noise levels under well-controlled conditions. It operates under the inlet flow conditions of a gas turbine combustor. Its principle is based on a sonic air jet periodic...
ver más
|
|
|
|
|
|
|
|
|
|
|
Constantin Tanasa, Alin Bosioc, Sebastian Muntean and Romeo Susan-Resiga
In this paper, we introduce a novel passive control method to mitigate the unsteadiness effects associated to the swirling flows with self-induced instabilities. The control method involves a progressive throttling cross-section flow at the outlet of the...
ver más
|
|
|
|
|
|
|
|
|
|
|
Dario Valentini, Giovanni Pace, Angelo Pasini, Ruzbeh Hadavandi and Luca D?Agostino
The paper presents an experimental campaign aimed at the characterization of the relationship between cavitation-induced instabilities and forces acting on the shaft, relevant to space application turbopumps. The experiments have been carried out on a si...
ver más
|
|
|
|
|
|
|
|
|
|
|
Mario Eck, Silvio Geist and Dieter Peitsch
Axial compressors in aero engines are prone to suffering a breakdown of orderly flow when operating at the peak of the pressure rise characteristic. The damaging potential of separated flows is why a safe distance has to be left between every possible op...
ver más
|
|
|
|
|
|