TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - nicht begutachtet (unreviewed) A1 - Lattner, Yannick A1 - Geller, Marius A1 - Kluck, Norbert T1 - Efficiency Approximation of Centrifugal Compressors in the Cordier Diagram N2 - 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. KW - CENTRIFUGAL COMPRESSOR, CORDIER DIAGRAM, CFD, METAMODELING, DESIGN OF EXPERIMENTS Y1 - 2023 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-33661 U6 - https://doi.org/10.26205/opus-3366 DO - https://doi.org/10.26205/opus-3366 SP - 12 S1 - 12 ER - TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Lattner, Yannick A1 - Geller, Marius T1 - Radial Turbocompressor Chord Length Approximation for the Reynold's Number Calculation N2 - 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 Bézier spline and quarter ellipse. This enables the earlier use of the chord Reynold's number during the machine design process of radial turbocompressors. KW - Strömungsmaschine , Reynolds-Zahl KW - Radial turbocompressors KW - Reynold's number KW - Turbomachinery KW - Design methods Y1 - 2023 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-33351 U6 - https://doi.org/10.26205/opus-3335 DO - https://doi.org/10.26205/opus-3335 ER - TY - CHAP U1 - Buchbeitrag A1 - Schemmann, Christoph A1 - Geller, Marius A1 - Kluck, Norbert T1 - Identification of loss model parameters for highly loaded centrifugal impellers T2 - Proceedings : 15th International Probabilistic Workshop & 10th Dresdner Probabilistic Workshop, 27th-29th September 2017, Dresden, Germany Y1 - 2017 PB - TUDpress CY - Dresden ER - TY - CHAP U1 - Buchbeitrag A1 - Geller, Marius A1 - Schemmann, Christoph A1 - Kluck, Norbert T1 - Optimization of the operation characteristic of a highly stressed centrifugal compressor impeller using automated optimization and metamodeling methods T2 - Proceedings of the ASME ... ; Volume 2, C ; Noise and innovative noise reduction; radial turbomachinery aerodynamics; multidisciplinary design approaches, optimization and uncertainty quantification Y1 - 2017 PB - The American Society of Mechanical Engineers CY - New York ER - TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Bongert, Markus A1 - Geller, Marius A1 - Pennekamp, Werner A1 - Volkmar, Nicolas T1 - Simulation of personalised haemodynamics by various mounting positions of a prosthetic valve using computational fluid dynamics JF - Biomedical engineering/Biomedizinische Technik Y1 - 2019 SN - 1862-278X SS - 1862-278X VL - 64 (2019) IS - 2 SP - 147 EP - 156 ER - TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Bongert, Markus A1 - Gehron, Johannes A1 - Geller, Marius A1 - Böning, A. A1 - Grieshaber, Philippe T1 - Bernoulli effect aggravates leg malperfusion during extracorporeal life support with femoral arterial cannulation BT - An in silico simulation study JF - The Thoracic and Cardiovascular Surgeon Y1 - 2018 SN - 0040-6384 SS - 0040-6384 VL - 2018 IS - S01 ER - TY - CHAP U1 - Buchbeitrag A1 - Geller, Marius A1 - Schemmann, Christoph A1 - Kluck, Norbert T1 - Simulation of radial tilting pad journal bearings in consideration of fluid-structure-interaction and a cavitating multiphase flow T2 - NAFEMS European conference multiphysics simulation 2012 : 16-17 October 2012, Frankfurt, Germany Y1 - 2012 SP - 6 S1 - 6 PB - NAFEMS GmbH CY - Bernau am Chiemsee ER - TY - CHAP U1 - Buchbeitrag A1 - Bongert, Markus A1 - Geller, Marius A1 - Pennekamp, Werner T1 - Numerical simulation of hemodynamic in the patient-specific aorta after aortic valve replacement based on MRI-data T2 - Horizons in world cardiovascular research : Volume 1 Y1 - 2010 N1 - Reihe: Horizons in world cardiovascular research series PB - Nova Biomedical Books CY - New York ER - TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Geller, Marius A1 - Schemmann, Christoph A1 - Kluck, Norbert T1 - Robustness evaluation and RDO of a centrifugal compressor impeller BT - efficiency enhancement concerning flow and mechanical properties in turbo machinery by performing sensitivity analysis and Robust Design Optimization with optiSLang and ANSYS JF - RDO-Journal Y1 - 2012 IS - 1 SP - 2 S1 - 2 ER - TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Geller, Marius A1 - Schemmann, Christoph A1 - Kluck, Norbert T1 - Simulation of radial journal bearings using the FSI approach and a multi-phase model with integrated cavitation JF - Progress in computational fluid dynamics : an international journal Y1 - 2014 SN - 1468-4349 SS - 1468-4349 VL - 14 (2014) IS - 1 SP - 1 S1 - 1 ER -