Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Fluidsysteme, GO"'
The aim of this study is to detect and visualize the propagating sound waves emanating from a flow around different types of rods. For this purpose, synchronous Particle Image Velocimetry (PIV) and microphone measurements were performed in an aeroaco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2a8822a4d4739274514967dff118f706
https://elib.dlr.de/119732/
https://elib.dlr.de/119732/
The Effect of Boundary Layer Control with Roughness Elements on the Wake Flow of Moving Train Models
Autor:
Buhr, Alexander, Ehrenfried, Klaus
Moving model experiments are used to investigate the flow around three different train geometries. Due to the difference in the Reynolds number, the flow might not be directly comparable to full-scale measurements. Boundary layer control is used to i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1640::159eb114e9efedc5605b4598c5e013dc
https://elib.dlr.de/119054/
https://elib.dlr.de/119054/
The thermal environment in interior spaces (e.g. cars, trains, aircrafts and office buildings) is often very inhomogeneous. Under such conditions, the human thermal sensation is influenced by a variety of thermal parameters, which renders the determi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0da07cb4f8e65e0858962caf5859dce3
https://elib.dlr.de/119230/
https://elib.dlr.de/119230/
Cross-correlation analysis of synchronized PIV and microphone measurements of an oscillating airfoil
The present study focuses on the correlation between the flow structures evolving during the dynamic stall processes of a two-dimensional NACA64-618 airfoil, which performs a sinusoidal movement about its quarter chord axis, and their aeroacoustic re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::723133e4b328ebb66b9c22f60d293067
https://elib.dlr.de/114855/
https://elib.dlr.de/114855/
One chapter in „Examples of Applications“ in „Particle Image Velocimetry – A Practical Guide“, 3rd edition: The simultaneous measurement of instantaneous velocity and temperature fields of air flows using thermochromic liquid crystals is di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1640::3c0fa6a2635b5c3ed9be0d2cd4e6f06a
https://elib.dlr.de/109268/
https://elib.dlr.de/109268/
The energy efficiency of rail freight by means of reduced drag can be increased significantly by technical and operational measures. Previous studies have shown that optimizing the car sequence can result in a drag reduction by at least a factor of 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1640::014689951a57f9312936aeb4d3dd04b0
https://elib.dlr.de/120060/
https://elib.dlr.de/120060/
Autor:
Mikhail Konstantinov, Claus Wagner
Publikováno v:
Notes on Numerical Fluid Mechanics and Multidisciplinary Design ISBN: 9783319645186
The paper presents results of unsteady Reynolds-averaged Navier-Stokes simulations (URANS), Delayed Detached Eddy Simulations (DDES) and Large Eddy Simulations (LES) of the flow and the noise propagation in a segment of the DLR’s cabin test facilit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1063e89ae9d34b3055fd450aa0dd62ed
https://doi.org/10.1007/978-3-319-64519-3_56
https://doi.org/10.1007/978-3-319-64519-3_56
Autor:
Buhr, Alexander, Ehrenfried, Klaus
Trackside induced airflow velocities, also known as slipstream velocities, are an important criterion for the design of high-speed trains. The maximum permitted values are given by the Technical Specifications for Interoperability (TSI) and have to b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a8b576b616db114a69b084f309e7260
Autor:
Köthe, Thomas, Wagner, Claus
Direct Numerical Simulations (DNS) of turbulent channel flow are performed in a computaional domain and for the friction Reynolds number Reτ = 180 realized by Kim with the aim to reduce the skin friction by controlling the near- wall transport proce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1640::8135ddfb7c7dbb1a5cc60be72d16c607
https://elib.dlr.de/110964/
https://elib.dlr.de/110964/