Christof Obertscheider

Christof Obertscheider
Fachhochschule Wiener Neustadt | FH Wiener Neustadt · Aerospace Engineering

About

12
Publications
1,040
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91
Citations
Citations since 2016
5 Research Items
25 Citations
201620172018201920202021202201234567
201620172018201920202021202201234567
201620172018201920202021202201234567
201620172018201920202021202201234567

Publications

Publications (12)
Article
Liquid Composite Moulding LCM processes are increasingly popular in the aerospace and related industries for the production of high quality composite parts. Filling simulations are often used in the design of moulds for LCM processes for efficient and complete filling of the mould. This paper proposes an energy balance equation for modelling energy...
Article
Full-text available
In multi-layer insulation (MLI) for space or terrestrial cryogenic applications, large densities of gas molecules (particles) between individual layers reduce the thermal performance of the insulation because particle collisions transfer heat. This poses an incentive to provide pathways for particles to escape the system quickly, such as perforatio...
Article
The growing use of composite materials has generated interest in improving and optimising composite manufacturing processes such as Liquid Composite Moulding (LCM). In LCM, dry preforms are placed in a mould and impregnated with the matrix material. The efficiency of filling the moulds can be improved by using Computational Fluid Dynamics (CFD) fil...
Conference Paper
Full-text available
The QB50 project is an international project with the goal of sending an extended number of nanosatellites, a.k.a. CubeSats, into the Thermosphere. The scientific goal of this mission is to monitor over a period of up to nine months the prevailing conditions in this rather unknown part of Earth`s atmosphere. Each of the CubeSats will be equipped wi...
Poster
Full-text available
The QB50 project is an international project with the goal of launching a fleet of CubeSats into Earth’s thermosphere. The thermosphere is a region of Earth‘s atmosphere at an altitude between 80 and 600 km. Albeit high up, it still determines our local and global weather. 36 satellites in total (status April, 2017) will be launched by the QB50 con...
Poster
Full-text available
The QB50 project is an international project with the goal to send up to 50 Nanosatellites, a.k.a. CubeSat, into the Thermosphere. The scientific goal of this mission is to monitor over a period of up to nine months the prevailing conditions in this rather unknown part of Earth’s atmosphere. Each of the 50 nanosatellites will be equipped with one o...
Chapter
The dynamics of the surface layers of our Sun is of interest to solar and stellar astrophysics but also to the geophysical sciences. Since the solar surface dynamics operates on a vast range of temporal and spatial scales, numerical simulations of these processes require supercomputers for their study. This holds in particular, if shear driven turb...
Article
We discuss the general design of the ANTARES code which is intended for simulations in stellar hydrodynamics with radiative transfer and realistic microphysics in 1D, 2D and 3D. We then compare the quality of various numerical methods. We have applied ANTARES in order to obtain high resolution simulations of solar granulation which we describe and...
Article
Full-text available
The structure of the solar photosphere has been studied by means of correlation analysis. The data analysis is based on a 3D radiation hydrodynamics-code modelling solar surface convection with high resolution in both, space and time. The variation of thermodynamic quantities with depth have been evaluated as well as the dependencies among those qu...
Article
Using advanced numerical schemes and grid refinement, we present 2D high-resolution models of solar granulation with particular emphasis on downflowing plumes. In the high-resolution portion of our simulation, a box measuring 1.97 × 2.58 Mm2 (vertical × horizontal), the grid size is 1.82 × 2.84 km2. Calculations at the resolution usually applied in...
Article
Full-text available
We present the essential features of the ANTARES code. ANTARES has been developed to perform the simulation of astrophysical flows in one, two, or three dimensions. Using, in particular, the option of grid refinement, we present results for solar granulation achieved at very high spatial resolution.
Article
Considerable activity is currently going on aimed at observing the solar atmosphere in high resolution. This is true for ground based observations (e.g. the Swedish vacuum telescope in Teneri e), balloon borne instrumentation as in the

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