Vita Publikationen

Letzte Einträge:
2018-12-04
09:28
[FZJ-2018-06991] Journal Article
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Accurate numerical simulation on the structural response of the VEGA payload fairing using modal coupling approach
Structural aeroacoustic interactions are of great interest in the design and manufacture of aerospace structures. During the lift off and the early phases of the launch various external loads like steady accelerations, random and broadband frequency vibrations, acoustic loads due to jet noise and fluid–structure interactions act on the lightweight panel structure of the payload fairing. [...]
ddc:620
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2018-12-03
09:41
[FZJ-2018-06955] Journal Article
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Computational analysis of exit conditions on the sound field of turbulent hot jets
A hybrid computational fluid dynamics (CFD) and computational aeroacoustics (CAA) method is used to compute the acoustic field of turbulent hot jets at a Reynolds number and a Mach number . The flow field computations are performed by highly resolved large-eddy simulations (LES), from which sound source terms are extracted to compute the acoustic field by solving the acoustic perturbation equations (APE). [...]
ddc:530
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2018-12-03
09:36
[FZJ-2018-06954] Journal Article
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A discrete adjoint framework for trailing-edge noise minimization via porous material
A discrete adjoint framework on the basis of algorithmic differentiation (AD) is developed for trailing-edge noise minimization. Turbulent flow through porous media is modeled based on the conservative transport equations filtered by a local volume-averaging method in which the effect of the porous media is modeled as viscous source terms. [...]
ddc:004
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2018-12-03
09:32
[FZJ-2018-06953] Journal Article
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Numerical analysis of the impact of variable porosity on trailing-edge noise
The impact of porous material with variable properties on trailing-edge noise is analyzed by a high resolution large-eddy simulation/computational aeroacoustics (LES/CAA) approach. Two trailing edge shapes, i.e., a sharp edge and a rounded edge, with solid and porous surfaces are considered. [...]
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ddc:004
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2018-12-03
09:25
[FZJ-2018-06951] Journal Article
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Numerical analysis of the impact of permeability on trailing-edge noise
The impact of porous surfaces on the near-wall turbulent structures and the generated trailing-edge noise is analyzed for several trailing-edge shapes of finite thickness using a high resolution large-eddy simulation (LES)/computational aeroacoustics (CAA) method. The porous surface of the trailing edge is defined by the porosity and the viscous permeability determined by the solution of a turbulent flat plate boundary layer at a Reynolds number 1280 based on the displacement thickness in the inflow cross section. [...]
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ddc:530
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2018-11-19
14:50
[FZJ-2018-06548] Poster (Other)
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Elucidation of early Zinc sensing and signalling events in Arabidopsis, upon Zn starvation and re-supply
XVIII International Plant Nutrition Colloquium, IPNC, CopenhagenCopenhagen, Denmark, 20 Aug 2017 - 24 Aug 20172017-08-202017-08-24
INTRODUCTIONZinc (Zn) is an essential micronutrient for many organisms, including plants and humans [1]. Today about 20% of the population is estimated to suffer from Zn deficiency [2], and relies on plants for their Zn uptake. [...]

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2018-11-19
14:44
[FZJ-2018-06547] Talk (non-conference) (Invited)
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Elucidation of the short term response to zinc resupply in zinc-starved Arabidopsis thaliana plants
LOCOMET – plant metal meeting, FranceFrance,

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2018-11-19
14:40
[FZJ-2018-06546] Conference Presentation (Invited)
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Early Zinc Sensing and Signaling Events in Arabidopsis Roots, Upon Zn Starvation and Resupply
International Society of Root research symposium, IsraelIsrael,
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2018-10-30
15:40
[FZJ-2018-06202] Talk (non-conference)
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Measurement of 002 structure factors for GaAs using parallel and convergent beam electron diffraction
Meeting of the Arbeitskreises Hochaufl¨osende Elektronenmikroskopie, BremenBremen, Germany, 23 Apr 2008 - 23 Apr 20082008-04-232008-04-23

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2018-10-30
15:25
[FZJ-2018-06200] Poster
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Measurement of GaAs structure factors from the diffraction of parallel and convergent electron nanoprobes
EMC 2008, AachenAachen, Germany, 1 Sep 2008 - 5 Sep 20082008-09-012008-09-05

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