Results 11 to 20 of about 1,683 (266)
Exponentially generalized vortex [PDF]
Europhysics Letters, 2022 AbstractIn this work, we propose an exponentially generalized Abelian model. We investigated the presence of vortex structures in models coupled to Maxwell and Chern-Simons fields. We chose to investigate the dynamics of the complex scalar field in models coupled separately to the Maxwell term and the Chern-Simons term. For this, we analyze the Bogomol'
F. C. E. Lima, C. A. S. Almeida
openaire +2 more sources
Rekayasa Mesin, 2020 Fin and tube heat exchangers use gas as a cooling/heating medium on the fin side. The low thermal conductivity of gases results in high thermal resistance, which results in a low rate of heat transfer.
Syaiful Syaiful +3 more
doaj +1 more source
Results in Engineering, 2022 Improvement of the convection heat transfer coefficient of the airflow has become a concern nowadays to increase the rate of heat transfer. Therefore, the present study is focused on evaluating the improvement of heat transfer numerically from several ...
Syaiful +4 more
doaj +1 more source
Proceeding of First Symposium on Turbulence and Shear Flow Phenomena, 1999 Abstract Vortex generating jets (VGJs) are jets that pass through a wall and into a crossflow to create a dominant streamwise vortex that remains embedded in the boundary layer over the wall. The VGJ is characterized by its pitch and skew angles (Φ and Θ) and the velocity ratio (VR) between the jet and the crossflow. For VR=1.0, the VGJ configuration
Zia U. Khan, James P. Johnston
openaire +1 more source
Research Progress on Supersonic Mixing Enhanced by Vortex Generators [PDF]
Hangkong bingqiEfficient mixing of fuel and air under supersonic conditions is important for achieving efficient combustion in scramjet and combined-cycle combustion chambers.
Xie Haiwei, Zhang Dongdong, Wang Pengren, Xu Zheng, Tan Jianguo
doaj +1 more source
Generation of Nonlinear Vortex Precursors
Physical Review Letters, 2016 We numerically study the propagation of a few-cycle pulse carrying orbital angular momentum (OAM) through a dense atomic system. Nonlinear precursors consisting of high-order vortex har- monics are generated in the transmitted field due to ultrafast Bloch oscillation.
Chen, Yue-Yue +2 more
openaire +4 more sources
Advances in Mechanical Engineering, 2015 A numerical and experimental study was conducted for heat transfer enhancement and fluid flow in a constant heat-fluxed rectangular wooden duct fitted with two shapes of vortex generators (circular and square).
Kutiaba JM Al-khishali, Munzer SY Ebaid
doaj +1 more source
Design of Solar-powered Endurance Glider with Vortex Generators [PDF]
Renewable Energy Research and Applications, 2021 The research aims at designing a solar endurance glider for an increased flight time. The constraints for design include reduction in weight compared to a typical glider and improving its aerodynamic performance by application of vortex generators on its
Sh. Sham Dol +4 more
doaj +1 more source
Vortex-Induced Vibration Suppression of a Circular Cylinder with Vortex Generators
Shock and Vibration, 2016 The vortex-induced vibration is one of the most important factors to make the engineering failure in wind engineering. This paper focuses on the suppression method of vortex-induced vibration that occurs on a circular cylinder fitted with vortex ...
Shi-bo Tao +4 more
doaj +1 more source
A Review of Airside Heat Transfer Augmentation with Vortex Generators on Heat Transfer Surface
Energies, 2018 Heat exchanger performance can be improved via the introduction of vortex generators to the airside surface, based on the mechanism that the generated longitudinal vortices can disrupt the boundary layer growth, increase the turbulence intensity and ...
Lei Chai, Savvas A. Tassou
doaj +1 more source