Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Andreas Brümmer"'
Publikováno v:
International Journal of Turbomachinery, Propulsion and Power, Vol 9, Iss 1, p 8 (2024)
The acoustic properties of a single-stage centrifugal pump with low specific speed are investigated by means of compressible 3D CFD simulations (URANS) and experiments. In order to determine the pump’s acoustic transmission and excitation character
Externí odkaz:
https://doaj.org/article/0dd6d324c1a14489a2e76abb0d520333
Autor:
Wolfgang Tillmann, Alexandra Wittig, Dominic Stangier, Carl-Arne Thomann, Henning Moldenhauer, Jörg Debus, Daniel Aurich, Andreas Brümmer
Publikováno v:
Lubricants, Vol 7, Iss 11, p 100 (2019)
Understanding the generation of third body particles and their contribution to the formation of tribofilms of MoSx thin films is still challenging due to a large number of influencing factors. Besides the structure of the as-deposited MoSx films, the
Externí odkaz:
https://doaj.org/article/c541e24229684e599bb0de878b0a3c10
Publikováno v:
International Journal of Turbomachinery, Propulsion and Power, Vol 4, Iss 3, p 16 (2019)
Subject of discussion are simulations and experimental investigations on the acoustic characterization of three single stage centrifugal pumps of different specific speed. In operation, these pump-types generate pressure pulsation at blade passing fr
Externí odkaz:
https://doaj.org/article/2b78eed068f7450695111c3d5ff4f425
Publikováno v:
Journal of Fluids Engineering. 145
A compressible finite volume Navier–Stokes flow solver is coupled to a method of characteristics for the seamless turbulent flow simulation of entire pump systems. For the pump, three-dimensional (3D) simulations including cavitating flow condition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18a3b0b406ee1f29d4826f4e481ac8bd
https://doi.org/10.1115/1.4062322
https://doi.org/10.1115/1.4062322
Autor:
Wolfgang Tillmann, Alexandra Wittig, Dominic Stangier, Carl-Arne Thomann, Jörg Debus, Daniel Aurich, Andreas Brümmer
Publikováno v:
Journal of Materials Engineering and Performance. 31:3200-3207
Modifying MoS2 thin films by additional elements shows great potential in order to adjust the property profile and to meet the increasing requirements regarding high wear resistance and low friction properties of industrial components. Within that co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05bc9726d146a3cd4a8fca0861fb0574
https://doi.org/10.1007/s11665-021-06447-z
https://doi.org/10.1007/s11665-021-06447-z
Autor:
J. Debus, Carl-Arne Thomann, Dominic Stangier, Wolfgang Tillmann, Andreas Brümmer, Daniel Aurich, Alexandra Wittig
Publikováno v:
Vakuum in Forschung und Praxis. 33:40-44
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5adc4e25cf1df3895714d85748d9202b
https://doi.org/10.1002/vipr.202100763
https://doi.org/10.1002/vipr.202100763
Publikováno v:
IOP Conference Series: Materials Science and Engineering, 1267 (1), 012003
The present experimental feasibility study testifies the two flow measurement techniques Defocusing Particle Tracking Velocimetry (DPTV) and Interferometric Particle Imaging (IPI) for their applicability to measure the two-phase flow of thin (sub-mil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ced2c015ea65285120a68f2c62d4d2e0
https://publikationen.bibliothek.kit.edu/1000154598
https://publikationen.bibliothek.kit.edu/1000154598
Autor:
Andreas Brümmer, Manuel Grieb
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering. 236:36-46
Condensation and its effects on turbomachinery operation are well understood and have been widely investigated. However, only little scientific work on condensation in positive displacement machines has been published. Although, depending on machine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06802975464e09065424c910830ed830
https://doi.org/10.1177/0954408919825747
https://doi.org/10.1177/0954408919825747
Publikováno v:
Physics of Fluids. 34:032004
The mass flow rate of a Couette flow in a long rectangular channel is calculated for constant or linear wall velocities in the whole range of the gas rarefaction and in a wide range of the width-to-height ratio. Analytical solutions for arbitrary wid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9212c6b5563944a7d8d27ddcff5cfb43
https://doi.org/10.1063/5.0082940
https://doi.org/10.1063/5.0082940
Autor:
Matthias Utri, Andreas Brümmer
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering. 236:4-13
The paper deals with the optimisation of the geometry of screw machines, focussing on the wrap angle of the rotors. The Pi-theorem is used to identify independent thermodynamic and geometric factors for the optimisation of dry running twin screw comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20aefb4119c9a1b5585dd5736e07ed18
https://doi.org/10.1177/0954408918802716
https://doi.org/10.1177/0954408918802716