Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Joachim Klinner"'
Autor:
Alexander Hergt, Tobias Danninger, Joachim Klinner, Sebastian Grund, Manfred Beversdorff, Christian Werner-Spatz
Publikováno v:
International Journal of Turbomachinery, Propulsion and Power, Vol 9, Iss 1, p 1 (2024)
In this paper, an experimental and numerical investigation of the effect of leading-edge erosion in transonic blades was performed. The measurements were carried out on a linear blade cascade in the Transonic Cascade Wind Tunnel of DLR in Cologne at
Externí odkaz:
https://doaj.org/article/a73b3111b3f94b6182f9e0054615cc6c
Autor:
Christian E. Willert, Joachim Klinner
Abstract Contrary to conventional frame-based imaging, event-based vision or dynamic vision sensing asynchronously records binary signals of intensity changes for given pixels with microsecond resolution. The present work explores the possibilities o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46a311d1aacc1194fe5484a41cf26baf
http://arxiv.org/abs/2202.11178
http://arxiv.org/abs/2202.11178
Publikováno v:
Experiments in Fluids. 62
The dynamics of a transonic buffet flow on the suction side of a highly loaded 2-D compressor blade model is investigated at a chord-based Reynolds number of$$1.4 \times 10^6$$1.4×106and an inlet Mach number of 1.05. Near stall the detached bow shoc
Publikováno v:
Notes on Numerical Fluid Mechanics and Multidisciplinary Design ISBN: 9783030252526
Measurements of a plane one-sided diffuser with a variable expansion ratio are compared with RANS simulations at a Reynolds number of 51,000. Two-component PIV provides boundary conditions and a global validation of mean velocities. Profile PIV is ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dd75e41702f9321f14106ea1ee95c9b
https://doi.org/10.1007/978-3-030-25253-3_63
https://doi.org/10.1007/978-3-030-25253-3_63
Autor:
Wolfgang Steinert, Christian Willert, Alexander Hergt, Sebastian Grund, Manfred Beversdorff, Joachim Klinner
The flow through a transonic compressor cascade is characterized by high unsteadiness and a high loss level. This results from the shock waves in the blade cascade and their interaction with the blade suction side boundary layer. In the case of a lam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::332aa971f4a6126877847c9c4f8f95a8
https://doi.org/10.1115/gt2019-90440
https://doi.org/10.1115/gt2019-90440
Autor:
Alexander Hergt, Manfred Beversdorff, Jens Wellner, Joachim Klinner, Christian Willert, Sebastian Grund, Wolfgang Steinert
Publikováno v:
Journal of Turbomachinery. 141
The flow through a transonic compressor cascade shows a very complex structure due to the occuring shock waves. In addition, the interaction of these shock waves with the blade boundary layer inherently leads to a very unsteady flow behaviour. The ai
Publikováno v:
Experiments in Fluids. 60
The influence of transition control on shock-induced flow separation was investigated in a highly loaded transonic compressor cascade at an inlet Mach number of 1.21 and a chord-based Reynolds number of $$1.4 \times 10^6$$ . Transition was influenced
Autor:
Manfred Beversdorff, Sebastian Grund, Joachim Klinner, Wolfgang Steinert, Alexander Hergt, Ulrich Siller
Publikováno v:
Volume 2A: Turbomachinery.
The development of modern axial compressors has already reached a high level. Therefore an enlargement of the design space by means of new or advanced aerodynamic methods is necessary in order to achieve further enhancements of performance and effici
Autor:
Joachim Klinner
Publikováno v:
Joachim Klinner
The present thesis assesses the applicability of volume resolving velocimetry for turbo machinery test facilities. Tomographic particle image velocimetry has been implemented in a transonic cascade wind tunnel. Assessment is based on 3D-3C measuremen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::fe12c8b629c5edee9949b8e1279b268d
https://elib.dlr.de/117111/
https://elib.dlr.de/117111/
Autor:
Andreas Schröder, Jean-Marc Foucaut, Julio Soria, Janos Agocs, Anni Röse, C. Cuvier, Rainer Hain, Jean-Philippe Laval, Reinhard Geisler, Omid Amili, Christian J. Kähler, Sven Scharnowski, Christian Willert, Callum Atkinson, Michel Stanislas, Joachim Klinner, S. Srinath
Publikováno v:
Experimental Thermal and Fluid Science
Experimental Thermal and Fluid Science, Elsevier, 2017, ⟨10.1016/j.expthermflusci.2017.10.033⟩
Experimental Thermal and Fluid Science, Elsevier, 2017, ⟨10.1016/j.expthermflusci.2017.10.033⟩
This study reports on experimentally observed rare near-wall reverse flow events in a fully developed turbulent flat plate boundary layer at zero pressure gradient with Reynolds numbers between Re θ ≈ 2500 and Re θ ≈ 8000 ( Re τ ≈ 800 – 24
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d8a42914dd36d61a9aaf7b105eb3063
http://hdl.handle.net/20.500.12210/29481
http://hdl.handle.net/20.500.12210/29481