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  - Blome, Frerk
A1  - Möller, Christina
A1  - Böning, Anja
T1  - Open House? - Class-specific career opportunities within German universities
JF  - Social Inclusion
N2  - This article focuses on the development of class-specific inequalities within German universities. Based on data on the social origin of students, doctoral students, and professors in the long-term cross-section, the article views the empirically observable dynamic of social closure of higher education since the 1950s. The focus of interest is on the level of the professorship. Data show that career conditions for underprivileged groups have deteriorated again. This finding is discussed in the context of social closure theories. The article argues that closure theories consider social closure processes primarily as intentional patterns of action, aimed at a strategic monopolization of participation, and securing social power. Such an analytical approach means that unintended closure processes remain understudied. Our conclusion is that concealed modes of reproduction of social structures ought to be examined and theorized more intensively due to their importance for the elimination of social inequality within universities.
Y1  - 2019
U6  - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20184
UN  - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20184
SN  - 2183-2803
SS  - 2183-2803
VL  - 7 (2019)
IS  - 1
SP  - 101
EP  - 110
ER  -