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  -