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  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Kremer, Robert
A1  - Khani, Somayeh
A1  - Appel, Tamara
A1  - Palkowski, Heinz
A1  - Foadian, Farzad
T1  - Selective laser melting of CuSn10: simulation of mechanical properties, microstructure, and residual stresses
JF  - Materials
Y1  - 2022
SN  - 1996-1944
SS  - 1996-1944
VL  - 15 (2022)
IS  - 11
SP  - 1
EP  - 13
ER  - 
TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Guias, Flavius
T1  - On efficacy and effectiveness of vaccines
BT  - a mathematical approach based on conditional probability with applications to the COVID-19 context
JF  - Spora : a journal of biomathematics
Y1  - 2022
SN  - 2473-5493
SS  - 2473-5493
VL  - 8 (2022)
SP  - 56
EP  - 60
ER  - 
TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Guias, Flavius
T1  - Numerical simulation of a modified SIR model fitting statistical data for COVID-19
JF  - WSEAS Transactions on Computer Research
Y1  - 2020
SN  - 1991-8755
SS  - 1991-8755
VL  - 8 (2020)
SP  - 115
EP  - 125
ER  - 
TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Guias, Flavius
T1  - Effects of the reproduction number in a SEIIRD model describing the time evolution of COVID-19 at country level
JF  - WSEAS Transactions on Computer Research
Y1  - 2020
SN  - 1991-8755
SS  - 1991-8755
VL  - 19 (2020)
SP  - 292
EP  - 297
ER  - 
TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Bongert, Markus
A1  - Wüst, Jan
A1  - Strauch, Justus
A1  - Buchwald, Dirk
T1  - Proof of concept for ozone-based disinfection of heater cooler units
JF  - Current directions in biomedical engineering
Y1  - 2020
SN  - 2364-5504
SS  - 2364-5504
VL  - 6 (2020)
IS  - 3
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  - Gehron, Johannes
A1  - Zirbes, Julian
A1  - Bongert, Markus
A1  - Schäfer, Stefan
A1  - Fiebich, Martin
A1  - Krombach, Gabriele
A1  - Böning, Andreas
A1  - Grieshaber, Philippe
T1  - Development and validation of a life-sized mock circulatory loop of the human circulation for fluid-mechanical studies
JF  - ASAIO Journal
Y1  - 2018
SN  - 1058-2916
SS  - 1058-2916
VL  - 2018
ER  - 
TY  - CHAP
U1  - Buchbeitrag
A1  - Gössner, Stefan
T1  - Fundamentals for web-based analysis and simulation of planar mechanisms
T2  - EuCoMeS 2018 : Proceedings of the 7th European Conference on Mechanism Science
Y1  - 2018
SP  - 215
EP  - 222
PB  - Springer International Publishing
CY  - Cham
ER  -