Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Jens Wellner"'
Publikováno v:
Fluids, Vol 7, Iss 8, p 253 (2022)
This work is about numerical simulations of vortex induced acoustic resonance in a duct, experimentally investigated by Welsh et al. Vortex shedding of low-speed flow over a flat plate excites an acoustic duct mode, leading to a lock-in of shedding a
Externí odkaz:
https://doaj.org/article/8d01a5bcd50a45fb936c0586b8a22734
Publikováno v:
Fluids; Volume 7; Issue 8; Pages: 253
This work is about numerical simulations of vortex induced acoustic resonance in a duct, experimentally investigated by Welsh et al. Vortex shedding of low-speed flow over a flat plate excites an acoustic duct mode, leading to a lock-in of shedding a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::9032a8400525df5a8e8185d4ecd95b97
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9c98b0d73384b0ca84a1df058f1ae4f
https://doi.org/10.1115/1.4043329
https://doi.org/10.1115/1.4043329
A nonlinear full-wheel time-domain simulation of a two-stage low pressure turbine is presented, analyzed, and compared with the available experimental data. Recent improvements to the computational fluid dynamics (CFD) solver TRACE that lead to signi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d33661e8c8dbe61fbf510499ce3263e5
https://doi.org/10.1115/1.4041820
https://doi.org/10.1115/1.4041820
Publikováno v:
Volume 2C: Turbomachinery.
This is the third part of a series of three papers on the simulation of turbulence and transition effects in a multistage low pressure turbine. The third part of the series deals with the detailed comparison of the Harmonic Balance calculations with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e3aa8dec627d3bdb5e9fb9e69edd2a4
https://doi.org/10.1115/gt2018-76749
https://doi.org/10.1115/gt2018-76749
Publikováno v:
Volume 2C: Turbomachinery.
This is the second part of a series of three papers on the simulation of turbulence and transition effects in a multistage low pressure turbine. In this second part, the investigated two-stage low pressure turbine is described and results of a nonlin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cff902f518ebc4ea3455768404a092f
https://doi.org/10.1115/gt2018-76764
https://doi.org/10.1115/gt2018-76764
The growing demand of low noise civil aircraft brings out technical challenges which require the application of computational aeroacoustics (CAA) methods within the development process of jet engines. This paper focuses on the simulation of exhaust j
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7eade85ec4695a7eef7e671ae878b2b0
https://elib.dlr.de/82666/
https://elib.dlr.de/82666/
Publikováno v:
17th AIAA/CEAS Aeroacoustics Conference (32nd AIAA Aeroacoustics Conference).
This study is focused on developing a process that couples the near-field unsteady flow field data computed by a 3-D Detached Eddy Simulation (DES) code with a Ffowcs Williams - Hawkings (FW-H) formulation for the far-field noise prediction of turbul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aecd2df2acf0d635a037420df6e62dc7
https://doi.org/10.2514/6.2011-2799
https://doi.org/10.2514/6.2011-2799
Publikováno v:
Volume 7: Turbomachinery, Parts A, B, and C.
This article describes how to extend the dsicrete adjoint method to functionals that are evaluated on arbitrary rotational control surfaces that intersect the flow domain at a position specified by the user, e.g. the pressure loss coefficient of a si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::040d901b6271e965a92c7d2adc9cbd56
https://doi.org/10.1115/gt2011-45041
https://doi.org/10.1115/gt2011-45041
An extension of the Ffowcs-Williams and Hawkings integral method suitable for CFD unsteady harmonic solutions and axisymmetrical congurations is presented, wherein the three following steps are conducted. i) A time-domain solution for the convective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbe9d22a7f05112e339e9f18ad50c17c
https://elib.dlr.de/68823/
https://elib.dlr.de/68823/