TY  - JOUR
A1  - Kern, Alexander
A1  - Schelthoff, Christof
A1  - Mathieu, Moritz
T1  - Calculation of interception efficiencies for airterminations using a dynamic electro-geometrical  model
Y1  - 2011
N1  - XI International Symposium on Lightning Protection (SIPDA), Fortaleza (Brasilien), 2011.
SP  - 1
EP  - 6
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Landers, Ernst Ulrich
A1  - Kern, Alexander
T1  - Future evolution of risk management for structures : Advancement for the future IEC 62305-2 Ed3
Y1  - 2011
N1  - XI International Symposium on Lightning Protection (SIPDA), Fortaleza (Brasilien), 2011.
SP  - 1
EP  - 6
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Schelthoff, Christof
A1  - Mathieu, Moritz
T1  - Probability of lightning strikes to air-terminations of structures using the electro-geometrical model theory and the statistics of lightning current parameters
JF  - Atmospheric Research. 104 (2011)
Y1  - 2011
SN  - 0169-8095
N1  - Article in Press
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Geimer, Konstantin
A1  - Sauerborn, Markus
A1  - Hoffschmidt, Bernhard
A1  - Schmitz, Mark
A1  - Göttsche, Joachim
T1  - Test Facility for Absorber Specimens of Solar Tower Power Plants
JF  - Advances in Science and Technology. 74 (2010)
Y1  - 2010
N1  - 5th Forum on New Materials : CIMTEC 2010, Montecatini Terme, Italy 13-18 June 2010. Part C
SP  - 266
EP  - 271
ER  - 
TY  - JOUR
A1  - Pieper, Martin
T1  - Vector hyperinterpolation on the sphere
JF  - Journal of approximation theory. 156 (2009), H. 2
Y1  - 2009
SN  - 0021-9045
SP  - 173
EP  - 186
ER  - 
TY  - JOUR
A1  - Pieper, Martin
A1  - Klein, Peter
T1  - A simple and accurate numerical network flow model for bionic micro heat exchangers
JF  - Heat mass transfer
Y1  - 2011
SN  - 0947-7411
VL  - 47
IS  - 5
SP  - 491
EP  - 503
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Pieper, Martin
A1  - Klein, Peter
T1  - Application of simple, periodic homogenization techniques to non-linear heat conduction problems in non-periodic, porous media
JF  - Heat mass transfer
N2  - Often, detailed simulations of heat conduction in complicated, porous media have large runtimes. Then homogenization is a powerful tool to speed up the calculations by preserving accurate solutions at the same time. Unfortunately real structures are generally non-periodic, which requires unpractical, complicated homogenization techniques. We demonstrate in this paper, that the application of simple, periodic techniques to realistic media, that are just close to periodic, gives accurate, approximative solutions. In order to obtain effective parameters for the homogenized heat equation, we have to solve a so called “cell problem”. In contrast to periodic structures it is not trivial to determine a suitable unit cell, which represents a non-periodic media. To overcome this problem, we give a rule of thumb on how to choose a good cell. Finally we demonstrate the efficiency of our method for virtually generated foams as well as real foams and compare these results to periodic structures.
Y1  - 2012
U6  - http://dx.doi.org/10.1007/s00231-011-0879-4
SN  - 0947-7411
VL  - 48
IS  - 2
SP  - 291
EP  - 300
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Pieper, Martin
T1  - Nonlinear integral equations for an inverse electromagnetic scattering problem
JF  - Journal of Physics Conference Series. 124 (2008)
Y1  - 2008
SN  - 1742-6596
ER  - 
TY  - JOUR
A1  - Pieper, Martin
A1  - Ivanyshyn, Olha
T1  - Nonlinear integral equations for a 3D inverse acoustic scattering problem : abstract / O. Ivanyshyn and M. Pieper
Y1  - 2008
N1  - World Congress on Computational Mechanics <8, 2008, Venedig> ; European Congress on Computational Methods in Applied Sciences and Engineering <5, 2008, Venedig>
ER  - 
TY  - JOUR
A1  - Ewe, Hendrik
A1  - Klein, Peter
A1  - Pieper, Martin
A1  - Füldner, G.
T1  - Heat conductivity in sintered aluminium fibers
JF  - Cellular metals for structural and functional applications : CELLMET 2008 ; proceedings of the International Symposium on Cellular Metals for Structural and Functional Applications held October 8 - 10, 2008 in Dresden, Germany / ed. by Günter Stephani
Y1  - 2009
SP  - 187
EP  - 193
PB  - Fraunhofer IFAM
CY  - Dresden
ER  -