@unpublished{LattnerGellerKluck2023, author = {Lattner, Yannick and Geller, Marius and Kluck, Norbert}, title = {Efficiency Approximation of Centrifugal Compressors in the Cordier Diagram}, doi = {10.26205/opus-3366}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-33661}, pages = {12}, year = {2023}, abstract = {We present a simulation data-based efficiency approximation for radial turbocompressors, which is implemented in the well-known Cordier diagram. A sophisticated CAE workflow is used to calculate the operational characteristics of 50 machine designs with 50 impeller geometry variations each. A Kriging-based surrogate model is trained to approximate the efficiency of any machine designs' best geometry design. The models are implemented into a machine design workflow. As a result, duty-specific Cordier lines are introduced. They are automatically generated for a set of machine design parameters. The efficiency of the designs along the duty-specific Cordier lines is approximated. Using optimization techniques, an optimal compressor design for the given duty on every specific Cordier line may be identified. This highly increases the amount of information available in the early design stages for radial turbocompressors.}, language = {en} } @article{LattnerGeller2023, author = {Lattner, Yannick and Geller, Marius}, title = {Radial Turbocompressor Chord Length Approximation for the Reynold's Number Calculation}, doi = {10.26205/opus-3335}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-33351}, year = {2023}, abstract = {We present an approximation model for the chord length of radial turbocompressors. The model enables the calculation of a compressor's chord Reynold's number during the machine design process. The chord Reynold's number is shown to be the most accurate representation of the fluid dynamic properties inside the radial turbocompressor's impeller. It — however — requires the computation of the chord length, which is only available after defining the final impeller geometry. The method presenting in this paper only employs the compressors principal dimensions to approximate the chord length. The chord is modelled using a B{\´e}zier spline and quarter ellipse. This enables the earlier use of the chord Reynold's number during the machine design process of radial turbocompressors.}, language = {en} } @article{KremerKhaniAppeletal.2022, author = {Kremer, Robert and Khani, Somayeh and Appel, Tamara and Palkowski, Heinz and Foadian, Farzad}, title = {Selective laser melting of CuSn10: simulation of mechanical properties, microstructure, and residual stresses}, series = {Materials}, volume = {15 (2022)}, number = {11}, issn = {1996-1944}, pages = {1 -- 13}, year = {2022}, language = {en} } @article{Guias2022, author = {Guias, Flavius}, title = {On efficacy and effectiveness of vaccines}, series = {Spora : a journal of biomathematics}, volume = {8 (2022)}, issn = {2473-5493}, pages = {56 -- 60}, year = {2022}, language = {en} } @article{Guias2020, author = {Guias, Flavius}, title = {Numerical simulation of a modified SIR model fitting statistical data for COVID-19}, series = {WSEAS Transactions on Computer Research}, volume = {8 (2020)}, issn = {1991-8755}, pages = {115 -- 125}, year = {2020}, language = {en} } @article{Guias2020, author = {Guias, Flavius}, title = {Effects of the reproduction number in a SEIIRD model describing the time evolution of COVID-19 at country level}, series = {WSEAS Transactions on Computer Research}, volume = {19 (2020)}, issn = {1991-8755}, pages = {292 -- 297}, year = {2020}, language = {en} } @article{BongertW{\"u}stStrauchetal.2020, author = {Bongert, Markus and W{\"u}st, Jan and Strauch, Justus and Buchwald, Dirk}, title = {Proof of concept for ozone-based disinfection of heater cooler units}, series = {Current directions in biomedical engineering}, volume = {6 (2020)}, number = {3}, issn = {2364-5504}, year = {2020}, language = {en} } @article{BongertGellerPennekampetal.2019, author = {Bongert, Markus and Geller, Marius and Pennekamp, Werner and Volkmar, Nicolas}, title = {Simulation of personalised haemodynamics by various mounting positions of a prosthetic valve using computational fluid dynamics}, series = {Biomedical engineering/Biomedizinische Technik}, volume = {64 (2019)}, number = {2}, issn = {1862-278X}, pages = {147 -- 156}, year = {2019}, language = {en} } @article{GehronZirbesBongertetal.2018, author = {Gehron, Johannes and Zirbes, Julian and Bongert, Markus and Sch{\"a}fer, Stefan and Fiebich, Martin and Krombach, Gabriele and B{\"o}ning, Andreas and Grieshaber, Philippe}, title = {Development and validation of a life-sized mock circulatory loop of the human circulation for fluid-mechanical studies}, series = {ASAIO Journal}, volume = {2018}, issn = {1058-2916}, year = {2018}, language = {en} } @incollection{G{\"o}ssner2018, author = {G{\"o}ssner, Stefan}, title = {Fundamentals for web-based analysis and simulation of planar mechanisms}, series = {EuCoMeS 2018 : Proceedings of the 7th European Conference on Mechanism Science}, publisher = {Springer International Publishing}, address = {Cham}, pages = {215 -- 222}, year = {2018}, language = {en} }