Wideband Dual-Polarized Octagonal Cavity-Backed Antenna with Low Cross-Polarization and High Aperture Efficiency [PDF]
Sensors, 2023 Simultaneously enhancing multiple antenna performance parameters is a demanding task, especially with a challenging set of design goals. In this paper, by carefully deriving a compatible set of enhancement techniques, we propose a compact/lightweight/low-
Yanxia Liu +2 more
exaly +4 more sources
Energies, 2023 Understanding fluid dynamics and heat transfer is crucial for designing and improving various engineering systems. This study examines the heat transfer characteristics of a buoyancy-driven natural convection flow that is laminar and incompressible.
Goutam Saha +2 more
exaly +3 more sources
Gain Enhancement and Cross-Polarization Suppression of Cavity-Backed Antennas Using a Flared Ground Cavity and Iris [PDF]
Sensors, 2023 Herein, we present new design principles for gain enhancement and cross-polarization suppression in dual-polarized cavity-backed antennas and demonstrate the capability in an octagonal cavity-backed open prism antenna (OCROP).
Yanxia Liu +2 more
doaj +2 more sources
Thermo-mechanical analysis of free convection in an octagonal cavity with adjustable active walls and flexible separator [PDF]
Scientific ReportsThis study investigates free convective within an octagonal cavity, which is partitioned into two compartments by a flexible separator. One of the left walls is maintained at a high temperature, while a lower temperature is applied to one of the right ...
Mohamed Boujelbene +7 more
doaj +2 more sources
Numerical investigation of MHD mixed convection in an octagonal heat exchanger containing hybrid nanofluid [PDF]
HeliyonNowadays, the advancement of heat transmission for the heat exchanger device is an important field of research for many researchers. In this work, a numerical study has been conducted to investigate the thermal performance of a mixed convective flow ...
Md. Yousuf Ali +4 more
doaj +2 more sources
A Novel Heterometallic Ring {Cr<sub>5</sub>Ni<sub>3</sub>} and New {Cr<sub>6</sub>Co<sub>2</sub>} and {Cr<sub>6</sub>Zn<sub>2</sub>} Rings. [PDF]
ChemistryA novel heterometallic ring containing five Cr(III) and three Ni(II) centers is reported. It forms an octagon and has a single isomer, as revealed by a combination of magnetic and EPR studies and collision‐induced dissociation mass spectrometry. ABSTRACT A new heterometallic ring, [Me4N][(Me4N)2Cr5Ni3F8(BTFB)16] (BTFB = 3,5‐bis(trifluoromethyl)benzoate)
Alsuhaymi A +9 more
europepmc +2 more sources
Case Studies in Thermal EngineeringThis article investigates the effect of Rayleigh numbers, Hartmann numbers, and magnetic fields on nanofluid flow behavior and heat transfer. The flow behavior has been analyzed based on the contours and values of the flow function and heat transfer ...
Rahma Sadat, D D Ganji, Irshad Ahmad
exaly +3 more sources
Unsteady magneto-hydrodynamic behavior of TiO2-kerosene nanofluid flow in wavy octagonal cavity
International Journal of ThermofluidsThe aim of this study is to mathematically model the behavior of magneto-hydrodynamics (MHD) in a two-dimensional unsteady flow, specifically focusing on natural convection (NC) and heat transfer (HT) within a wavy octagonal cavity.
Goutam Saha +2 more
exaly +3 more sources
Journal of Taibah University for ScienceNatural convective heat transfer (NCHT) supports various technologies in geophysics, and biomedicine. Entropy generation (EG) results in efficiency, cost, and emissions implications for thermal systems.
Nur Alam, Shams Forruque Ahmed
exaly +3 more sources
Sector Unit-Cell Methodology for the Design of Sub-6 GHz 5G MIMO Antennas
IEEE Access, 2022 A novel methodology based on the sectorization of multiple-port cavities with azimuthal symmetry into sector unit cells is presented to design 5G multiple-input multiple-output (MIMO) sub-6 GHz antennas.
Jaime Molins-Benlliure +3 more
doaj +1 more source