Magnetic field and radiation effects on natural convection in a porous enclosure

Date

2017-09-29

Author

Bozkaya, Canan

Metadata

Show full item record

Item Usage Stats

50
views

0
downloads

URI

https://hdl.handle.net/11511/76757

Collections

Unverified, Conference / Seminar

Suggestions

OpenMETU
Core

Magnetic field and curvature effects on pair production. II. Vectors and implications for chromodynamics Karabali, D.; Kürkcüoğlu, Seçkin; Nair, V. P. (American Physical Society (APS), 2019-09-17) We calculate the pair production rates for spin-1 or vector particles on spaces of the form M x R-1,R-1, with M corresponding to R-2 (flat), S-2 (positive curvature), and H-2 (negative curvature), with and without a background (chromo)magnetic field on M. Beyond highlighting the effects of curvature and background magnetic field, this is particularly interesting since vector particles are known to suffer from the Nielsen-Olesen instability, which can dramatically increase pair production rates. The form of ...
Magnetic field and curvature effects on pair production. I. Scalars and spinors Karabali, D.; Kürkcüoğlu, Seçkin; Nair, V. P. (American Physical Society (APS), 2019-9-17) The pair production rates for spin-0 and spin-1/2 particles are calculated on spaces of the form M x R-1,R-1, with M corresponding to R-2 (flat); T-2 (flat, compactified); S-2 (positive curvature); and H-2 (negative curvature), with and without a background magnetic field on M. The motivation is to elucidate the effects of the curvature and background magnetic field. Contrasting effects for positive and negative curvature on the two cases of spin are obtained. For positive curvature, we find enhancement for...
Magnetic symmetries and vortices in Chern-Simons theories Dunne, G; Kovner, A; Tekin, Bayram (2001-01-15) We study the locality properties of the vortex operators in compact U(1) Maxwell-Chern-Simons and SU(N) Yang-Mills-Chem-Simons theories in 2+1 dimensions. We find that these theories do admit local vortex operators and thus in the UV regularized versions should contain stable magnetic vortices. In the continuum limit however the energy of these vortex excitations generically is logarithmically UV divergent. Nevertheless the classical analysis shows that at small values of the CS coefficient kappa the vortic...
Magnetic Resonance Electrical Impedance Tomography For Anisotropic Conductivity Imaging Degirmenci, E.; Eyüboğlu, Behçet Murat (2008-11-27) Magnetic Resonance Electrical Impedance Tomography (MREIT) brings high resolution imaging of true conductivity distribution to reality. MREIT images are reconstructed based on measurements of current density distribution and a surface potential value, induced by an externally applied current flow. Since biological tissues may be anisotropic, isotropic conductivity assumption, as it is adopted in most of MREIT reconstruction algorithms, introduces reconstruction inaccuracy. In this study, a novel algorithm i...
Magnetic resonance current density imaging using one component of magnetic flux density Ersöz, Ali; Eyüboğlu, Behçet Murat; Department of Electrical and Electronics Engineering (2010) Magnetic Resonance Electrical Impedance Tomography (MREIT) algorithms using current density distribution have been proposed in the literature. The current density distribution can be determined by using Magnetic Resonance Current Density Imaging (MRCDI) technique. In MRCDI technique, all three components of magnetic flux density should be measured. Hence, object should be rotated inside the magnet which is not trivial even for small size objects and remains as a strong limitation to clinical applicability o...

Citation Formats

C. Bozkaya, “Magnetic field and radiation effects on natural convection in a porous enclosure,” 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/76757.