@inproceedings{MayBreitbachAlexopoulosetal.2019, author = {May, Martin and Breitbach, Gerd and Alexopoulos, Spiros and Latzke, Markus and B{\"a}umer, Klaus and Uhlig, Ralf and S{\"o}hn, Matthias and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf}, title = {Experimental facility for investigations of wire mesh absorbers for pressurized gases}, series = {AIP Conference Proceedings}, volume = {2126}, booktitle = {AIP Conference Proceedings}, issn = {0094243X}, doi = {10.1063/1.5117547}, pages = {030035-1 -- 030035-9}, year = {2019}, language = {en} } @inproceedings{BreitbachAlexopoulosMayetal.2019, author = {Breitbach, Gerd and Alexopoulos, Spiros and May, Martin and Teixeira Boura, Cristiano Jos{\´e} and Herrmann, Ulf}, title = {Analysis of volumetric solar radiation absorbers made of wire meshes}, series = {AIP Conference Proceedings}, volume = {2126}, booktitle = {AIP Conference Proceedings}, issn = {0094243X}, doi = {10.1063/1.5117521}, pages = {030009-1 -- 030009-6}, year = {2019}, language = {en} } @article{AlebouyehSamamiPieperBreitbachetal.2014, author = {Alebouyeh Samami, Behzad and Pieper, Martin and Breitbach, Gerd and Hodapp, Josef}, title = {Heat production in the windings of the stators of electric machines under stationary condition}, series = {Heat and mass transfer}, volume = {50}, journal = {Heat and mass transfer}, publisher = {Springer}, address = {Heidelberg}, issn = {0947-7411 (Print) ; 1432-1181 (E-Journal)}, doi = {10.1007/s00231-014-1371-8}, pages = {1707 -- 1716}, year = {2014}, abstract = {In electric machines due to high currents and resistive losses (joule heating) heat is produced. To avoid damages by overheating the design of effective cooling systems is required. Therefore the knowledge of heat sources and heat transfer processes is necessary. The purpose of this paper is to illustrate a good and effective calculation method for the temperature analysis based on homogenization techniques. These methods have been applied for the stator windings in a slot of an electric machine consisting of copper wires and resin. The key quantity here is an effective thermal conductivity, which characterizes the heterogeneous wire resin-arrangement inside the stator slot. To illustrate the applicability of the method, the analysis of a simplified, homogenized model is compared with the detailed analysis of temperature behavior inside a slot of an electric machine according to the heat generation. We considered here only the stationary situation. The achieved numerical results are accurate and show that the applied homogenization technique works in practice. Finally the results of simulations for the two cases, the original model of the slot and the homogenized model chosen for the slot (unit cell), are compared to experimental results.}, language = {en} } @article{AlexopoulosBreitbachHoffschmidtetal.2008, author = {Alexopoulos, Spiros and Breitbach, Gerd and Hoffschmidt, Bernhard and Stobbe, P.}, title = {Optimization of the geometry of porous SiC ceramic filtering modules using numerical methods}, series = {Developments in porous, biological and geopolymer ceramics : a collection of papers presented at the 31st International Conference on Advanced Ceramics and Composites, January 21 - 26, 2007, Daytona Beach, Florida ; [papers presented at the Symposium on Porous Ceramics: Novel Developments and Applications] / ed.: Manuel Brito ... Vol. ed.: Jonathan Salem ... The American Ceramics Society}, journal = {Developments in porous, biological and geopolymer ceramics : a collection of papers presented at the 31st International Conference on Advanced Ceramics and Composites, January 21 - 26, 2007, Daytona Beach, Florida ; [papers presented at the Symposium on Porous Ceramics: Novel Developments and Applications] / ed.: Manuel Brito ... Vol. ed.: Jonathan Salem ... The American Ceramics Society}, publisher = {Wiley}, address = {Hoboken, NJ}, isbn = {9780470196403}, pages = {95 -- 104}, year = {2008}, language = {en} } @article{AlexopoulosBreitbachHoffschmidtetal.2008, author = {Alexopoulos, Spiros and Breitbach, Gerd and Hoffschmidt, Bernhard and Stobbe, P.}, title = {Computational fluid flow of porous resic ceramic filtering modules and optimization of the channel edge form geometry}, series = {Proceedings : April 14 - 18, 2008, Leipzig, Germany / hosted by VDI, Society for Chemical and Process Engineering . Vol 2}, journal = {Proceedings : April 14 - 18, 2008, Leipzig, Germany / hosted by VDI, Society for Chemical and Process Engineering . Vol 2}, publisher = {Filtech Exhibitions}, address = {Meerbusch}, pages = {300 -- 304}, year = {2008}, language = {en} } @article{BreitbachMohrKroeger1983, author = {Breitbach, Gerd and Mohr, H.-G. and Kroeger, W.}, title = {Kann der Aufwand f{\"u}r qualit{\"a}tssichernde Maßnahmen bei 'kleinen Reaktoren' gering gehalten werden? / H.-G. Mohr ; W. Kroeger ; G. Breitbach}, series = {Kerntechnik '83 : Jahrestagung Kerntechnik , Berlin, 14.-16. Juni 1983. Tagungsbericht / Hrsg.: Kerntechnische Gesellschaft e.V. und Deutsches Atomforum e.V.}, journal = {Kerntechnik '83 : Jahrestagung Kerntechnik , Berlin, 14.-16. Juni 1983. Tagungsbericht / Hrsg.: Kerntechnische Gesellschaft e.V. und Deutsches Atomforum e.V.}, publisher = {Deutsches Atomforum}, address = {Bonn}, isbn = {0173-0924}, pages = {199 -- 202}, year = {1983}, language = {de} } @article{Breitbach1983, author = {Breitbach, Gerd}, title = {Spannungs- und Kriechsch{\"a}digungsanalyse f{\"u}r die Rohre eines HTR-beheizten R{\"o}hrenspaltofens}, series = {Kerntechnik '83 : Jahrestagung Kerntechnik , Berlin, 14.-16. Juni 1983. Tagungsbericht / Hrsg.: Kerntechnische Gesellschaft e.V. und Deutsches Atomforum e.V.}, journal = {Kerntechnik '83 : Jahrestagung Kerntechnik , Berlin, 14.-16. Juni 1983. Tagungsbericht / Hrsg.: Kerntechnische Gesellschaft e.V. und Deutsches Atomforum e.V.}, publisher = {Deutsches Atomforum}, address = {Bonn}, isbn = {0173-0924}, pages = {659 -- 662}, year = {1983}, language = {de} } @book{BreitbachAltes1983, author = {Breitbach, Gerd and Altes, J{\"u}rgen}, title = {Zum St{\"o}rfallverhalten des HTR 500 : eine Trendanalyse / [KFA, Kernforschungsanlage J{\"u}lich GmbH, Inst. f{\"u}r Nukleare Sicherheitsforschung]. Von J. Altes ; G.Breitbach...}, publisher = {Zentralbibliothek der Kernforschungsanlage}, address = {J{\"u}lich}, pages = {41 S. : graph. Darst.}, year = {1983}, language = {de} } @book{BreitbachFassbenderAltes1983, author = {Breitbach, Gerd and Fassbender, Josef and Altes, J{\"u}rgen}, title = {Nukleare Prozessw{\"a}rmeanlage AVR-II : sicherheitstechnische Untersuchungen / Institut f{\"u}r Nukleare Sicherheitsforschung. Von J. Fassbender ; J. Altes ; S. Becker ... G. Breitbach ...}, publisher = {Zentralbibliothek der Kernforschungsanlage}, address = {J{\"u}lich}, pages = {221 S. : graph. Darst.}, year = {1983}, language = {de} } @article{BreitbachDavidLohnert1984, author = {Breitbach, Gerd and David, P.-H. and Lohnert, G.-H.}, title = {Absch{\"a}tzung des langfristigen Lufteintrags nach einem Druckentlastungsst{\"o}rfall des HTR-Modul}, series = {Jahrestagung Kerntechnik '84 : Alte Oper, Frankfurt, 22. - 24. Mai 1984 ; Tagungsbericht / Kerntechnische Gesellschaft}, journal = {Jahrestagung Kerntechnik '84 : Alte Oper, Frankfurt, 22. - 24. Mai 1984 ; Tagungsbericht / Kerntechnische Gesellschaft}, publisher = {Deutsches Atomforum}, address = {Bonn}, isbn = {0173-0924}, pages = {287 -- 290}, year = {1984}, language = {de} }