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Hybrid excited flux switching linear machines (HEFSLM) are attracting attention in rail transit applications due to their high thrust force density, power density, and efficiency. more importantly, their flux controlling ability gives them an edge over permanent magnet machines, which possess constant flux. This paper investigates a modular mover HEFSLM (MMHEFSLM) with concentrated armature and field windings. The concentrated windings result in thrust force ripples but reduce the copper losses. The modular structure of the mover helps in achieving fault-tolerant ability. The volume of PM is significantly reduced, which is rare-earth material and its price is rising progressively. JMAG in-built genetic optimization is utilized to refine the leading CAD parameters thereby improve performance compared to the initial design. The fault-tolerant ability of the proposed machine is verified by the phase's inductance calculation. Finally, based on the electromagnetic performance, the proposed MMHEFSLM is compared with conventional design in the literature. [ABSTRACT FROM AUTHOR]

In the current research article, the two-dimensional, incompressible, steady fluid flow is considered. The heat transfer rate of water-based aggregated fluid between converging/diverging channels of shrinking/stretching walls due to the effects of thermal radiation has been examined. The strong static magnetic field is applied perpendicular to the radial direction. The modeled governing equations are transformed into non-linear dimensionless ordinary differential equations by considering appropriate similarity transformations. Since the obtained ODEs are strongly non-linear and the exact solution of these equations is not possible, thus we applied the numerical method RK4 combined with the shooting technique to handle the equations. The impacts of several influential parameters on velocity, temperature, and entropy generation profiles are examined graphically. [ABSTRACT FROM AUTHOR]