Full field dependence of primary aberrations in perturbed double-plane symmetric systems with a circular pupil

2020 ◽  
Vol 37 (12) ◽  
pp. 1999
Author(s):  
Alessandro Grosso ◽  
Toralf Scharf
Keyword(s):  
Field Dependence ◽  
Full Field ◽  
Plane Symmetric ◽  
Double Plane ◽  
Symmetric Systems

Wake structure of laminar flow past a sphere under the influence of a transverse magnetic field

2019 ◽  
Vol 873 ◽  
pp. 151-173
Author(s):  
Jun-Hua Pan ◽  
Nian-Mei Zhang ◽  
Ming-Jiu Ni
Keyword(s):  
Magnetic Field ◽  
Reynolds Number ◽  
Magnetic Fields ◽  
Transverse Magnetic Field ◽  
Symmetry Plane ◽  
Transverse Magnetic ◽  
Symmetric State ◽  
Wake Structure ◽  
Plane Symmetric ◽  
Double Plane

The wake structure of an incompressible, conducting, viscous fluid past an electrically insulating sphere affected by a transverse magnetic field is investigated numerically over flow regimes including steady and unsteady laminar flows at Reynolds numbers up to 300. For a steady axisymmetric flow affected by a transverse magnetic field, the wake structure is deemed to be a double plane symmetric state. For a periodic flow, unsteady vortex shedding is first suppressed and transitions to a steady plane symmetric state and then to a double plane symmetric pattern. Wake structures in the range $210<Re\leqslant 300$ without a magnetic field have a symmetry plane. An angle $\unicode[STIX]{x1D703}$ exists between the orientation of this symmetry plane and the imposed transverse magnetic field. For a given transverse magnetic field, the final wake structure is found to be independent of the initial flow configuration with a different angle $\unicode[STIX]{x1D703}$. However, the orientation of the symmetry plane tends to be perpendicular to the magnetic field, which implies that the transverse magnetic field can control the orientation of the wake structure of a free-moving sphere and change the direction of its horizontal motion by a field–wake–trajectory control mechanism. An interesting ‘reversion phenomenon’ is found, where the wake structure of the sphere at a higher Reynolds number and a certain magnetic interaction parameter ($N$) corresponds to a lower Reynolds number with a lower $N$ value. Furthermore, the drag coefficient is proportional to $N^{2/3}$ for weak magnetic fields or to $N^{1/2}$ for strong magnetic fields, where the threshold value between these two regimes is approximately $N=4$.

scholarly journals Aberration fields of a combination of plane symmetric systems: erratum

2009 ◽  
Vol 17 (17) ◽  
pp. 15390
Author(s):  
Lori B. Moore ◽  
Anastacia M. Hvisc ◽  
Jose Sasian
Keyword(s):  
Plane Symmetric ◽  
Symmetric Systems

Binding energy in self-gravitating charged plane symmetric systems

2016 ◽  
Vol 54 (3) ◽  
pp. 451-456 ◽  
Author(s):  
M. Sharif ◽  
M. Zaeem-Ul-Haq Bhatti
Keyword(s):  
Binding Energy ◽  
Plane Symmetric ◽  
Symmetric Systems

Parabasal theory for plane-symmetric systems including freeform surfaces

2013 ◽  
Vol 53 (3) ◽  
pp. 031303 ◽  
Author(s):  
Rania H. Abd El-Maksoud ◽  
Matthias Hillenbrand ◽  
Stefan Sinzinger
Keyword(s):  
Freeform Surfaces ◽  
Plane Symmetric ◽  
Symmetric Systems

scholarly journals Aberration fields of a combination of plane symmetric systems

2008 ◽  
Vol 16 (20) ◽  
pp. 15655 ◽  
Author(s):  
Lori B. Moore ◽  
Anastacia M. Hvisc ◽  
Jose Sasian
Keyword(s):  
Plane Symmetric ◽  
Symmetric Systems

Attachment and Field Dependence: Individual Differences in Information Processing

2004 ◽  
Vol 9 (1) ◽  
pp. 43-55 ◽  
Author(s):  
Patrizia Vermigli ◽  
Alessandro Toni
Keyword(s):  
Information Processing ◽  
Individual Differences ◽  
Field Dependence ◽  
Attachment Styles ◽  
Close Relationships ◽  
Adult Age ◽  
Males And Females ◽  
Figure Test ◽  
The Relationship ◽  
Measure Field

The present research analyzes the relationship between attachment styles at an adult age and field dependence in order to identify possible individual differences in information processing. The “Experience in Close Relationships” test of Brennan et al. was administered to a sample of 380 individuals (160 males, 220 females), while a subsample of 122 subjects was given the Embedded Figure Test to measure field dependence. Confirming the starting hypothesis, the results have shown that individuals with different attachment styles have a different way of perceiving the figure against the background. Ambivalent and avoidant individuals lie at the two extremes of the same dimension while secure individuals occupy the central part. Significant differences also emerged between males and females.

Sign in / Sign up

Export Citation Format

Share Document