We use the energy-momentum complexes of Landau and Lifshitz and Papapetrou to obtain the energy distribution in Melvin’s magnetic universe. For this space-time we find that these definitions of energy give the same and convincing results. The energy distribution obtained here is the same as we obtained earlier for the same space-time using the energy-momentum complex of Einstein. These results ...

Entropy generation due to viscous incompressible MHD forced convective dissipative fluid flow through a horizontal channel of finite depth in the existence of an inclined magnetic field and heat source effect has been examined. The governing non-linear partial differential equations for momentum, energy and entropy generation are derived and solved by using the analytical method. In addition; t...

The central engine that drives gamma ray burst (GRB) explosions may derive from the ability of electrons/positrons and nucleons to tap into the momentum and energy from the large neutrino luminosity emitted by an accretion disk surrounding a black hole. This transfer of momentum and energy occurs due to neutrino absorption, scattering, and annihilation and the non-spherical geometry of the sour...

Beginning with a discussion of energy and exergy analysis definitions, the presented study provides a descriptive mathematical model for energy and exergy analysis for a co-current gas cooling tower. For this purpose using conservation laws of mass, energy and momentum, the variation of temperature and enthalpy of gas and liquid streams are predicted along the tower length and are used in order...

The transition to multiphoton electron scattering in a high-intensity laser focus occurs when the oscillatory energy of a free electron in the laser field approaches the electron rest energy. Under these conditions the electron recoil due to the laser-field momentum can no longer be ignored, and free electrons acquire momentum in the direction of the wave vector of the laser. This momentum was ...

Using the energy-momentum complexes of Einstein, Bergmann-Thomson, LandauLifshitz (LL), Møller and Papapetrou we have tried to solve energy-momentum and colliding plane wave problems for Bertotti-Robinson (BR) space-time (it has been also a subject of an extensive study in the context of the so-called colliding plane wave problem in General relativity) in General Relativity (GR). Moreover Einst...

Wind power has been widely considered in recent years as an available and a clean renewable energy source. The cost of wind energy production is currently the main issue, and increasing the size of wind turbines can reduce wind energy production costs. Hence, megawatt wind turbines are being rapidly developed in recent years. In this paper, an aerodynamic analysis of the NREL 5MW turbine is...

beginning with a discussion of energy and exergy analysis definitions, the presented study provides a descriptive mathematical model for energy and exergy analysis for a co-current gas cooling tower. for this purpose using conservation laws of mass, energy and momentum, the variation of temperature and enthalpy of gas and liquid streams are predicted along the tower length and are used in order...

This study is purposed to elaborate the problem of energy and momentum distribution of the Bell-Szekeres space time in General theory of relativity. In this connection, we use the energy-momentum definition of Møller and obtained that the energy momentum distributions (due to matter plus field) are vanishing everywhere. This results are exactly same as viewpoint of Aygün et al. and agree with a...

Wind power has been widely considered in recent years as an available and a clean renewable energy source. The cost of wind energy production is currently the main issue, and increasing the size of wind turbines can reduce wind energy production costs. Hence, megawatt wind turbines are being rapidly developed in recent years. In this paper, an aerodynamic analysis of the NREL 5MW turbine is...