scholarly journals Local Generalized Symmetries and Locally Symmetric Parabolic Geometries

2017 ◽  
Author(s):  
Jan Gregorovič ◽  
◽  
Lenka Zalabová ◽  
Keyword(s):  
Generalized Symmetries ◽  
Parabolic Geometries

scholarly journals Geometric properties of homogeneous parabolic geometries with generalized symmetries

2016 ◽  
Vol 49 ◽  
pp. 388-422 ◽  
Author(s):  
Jan Gregorovič ◽  
Lenka Zalabová
Keyword(s):  
Geometric Properties ◽  
Generalized Symmetries ◽  
Parabolic Geometries

Generalized symmetries for the ideal MHD equations

1993 ◽  
Vol 63 (1-2) ◽  
pp. 87-98 ◽  
Author(s):  
F. Galas
Keyword(s):  
Mhd Equations ◽  
Generalized Symmetries ◽  
Ideal Mhd ◽  
The Ideal

scholarly journals Generalized symmetries and deformations of the direct sums of Lie algebras

1968 ◽  
Vol 11 (2) ◽  
pp. 131-137 ◽  
Author(s):  
V. D. Lyakhovsky
Keyword(s):  
Lie Algebras ◽  
Direct Sums ◽  
Generalized Symmetries

scholarly journals The Influence of Combined Turbulators on the Hydraulic-Thermal Performance and Exergy Efficiency of MWCNT-Cu/Water Nanofluid in a Parabolic Solar Collector: A Numerical Approach

2021 ◽  
Vol 9 ◽  
Author(s):  
Yacine Khetib ◽  
Ammar Melaibari ◽  
Radi Alsulami
Keyword(s):  
Solar Collector ◽  
Volume Fraction ◽  
Numerical Approach ◽  
Exergy Efficiency ◽  
Multiphase Model ◽  
Two Phase ◽  
Simpler Algorithm ◽  
Fluent Software ◽  
Parabolic Geometries ◽  
Volume Method

The present research benefits from the finite volume method in investigating the influence of combined turbulators on the thermal and hydraulic exergy of a parabolic solar collector with two-phase hybrid MWCNT-Cu/water nanofluid. All parabolic geometries are produced using DesignModeler software. Furthermore, FLUENT software, equipped with a SIMPLER algorithm, is applied for analyzing the performance of thermal and hydraulic, and exergy efficiency. The Eulerian–Eulerian multiphase model and k-ε were opted for simulating the two-phase hybrid MWCNT-Cu/water nanofluid and turbulence model in the collector. The research was analyzed in torsion ratios from 1 to 4, Re numbers from 6,000 to 18,000 (turbulent flow), and the nanofluid volume fraction of 3%. The numerical outcomes confirm that the heat transfer and lowest pressure drop are relevant to the Re number of 18,000, nanofluid volume fraction of 3%, and torsion ratio of 4. Furthermore, in all torsion ratios, rising Re numbers and volume fraction lead to more exergy efficiency. The maximum value of 26.32% in the exergy efficiency was obtained at a volume fraction of 3% and a torsion ratio of 3, as the Re number goes from 60,000 to 18,000.

SYMMETROLOGY OF ART: COLOURED AND GENERALIZED SYMMETRIES

Symmetry ◽  
1986 ◽  
pp. 949-980 ◽  
Author(s):  
EMIL MAKOVICKY
Keyword(s):  
Generalized Symmetries

Generalized Symmetries

1986 ◽  
pp. 292-377
Author(s):  
Peter J. Olver
Keyword(s):  
Generalized Symmetries
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