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  • 2025


    • Book : 603()
    • Pub. Date : 2025
    • Page : pp.155372
    • Keyword :
  • 2025


    • Book : 603()
    • Pub. Date : 2025
    • Page : pp.155393
    • Keyword :
  • 2025


    • Book : 226()
    • Pub. Date : 2025
    • Page : pp.112359
    • Keyword :
  • 2025

    Abstract

    The neutral beam heating system for the future international fusion experiment ITER will be based on radio-frequency driven ion sources delivering a large (≈1 × 2 m2) and homogeneous negative hydrogen or deuterium ion beam of several ten Amperes for several hundred seconds. The size scaling experiment ELISE (Extraction from a Large Ion Source Experiment) is an integral part of the R&D road-map towards the ITER neutral beam heating system. Recently, 90% of the ITER target for the extracted current density was achieved in hydrogen for 600 s, increasing the pulse length over which such current densities can be achieved by a factor of more than ten. For ten second beam pulses the ITER target current density was achieved. These breakthrough results are made possible by using a steady-state capable high-voltage power supply together with an improved version of internal potential rods and a modified topology of the magnetic filter field.


    • Book : 65(1)
    • Pub. Date : 2025
    • Page : pp.014001
    • Keyword :
  • 2025


    • Book : 603()
    • Pub. Date : 2025
    • Page : pp.155378
    • Keyword :
  • 2025


    • Book : 603()
    • Pub. Date : 2025
    • Page : pp.155438
    • Keyword :
  • 2025


    • Book : 603()
    • Pub. Date : 2025
    • Page : pp.155432
    • Keyword :
  • 2025


    • Book : 226()
    • Pub. Date : 2025
    • Page : pp.112164
    • Keyword :
  • 2025


    • Book : 603()
    • Pub. Date : 2025
    • Page : pp.155481
    • Keyword :
  • 2025

    Abstract

    In this study, we examine the nature of magnetohydrodynamic (MHD) Casson flow of fluid across a stretched surface in a porous material. It studies how the behaviour of Casson fluids is affected by a number of variables, including thermal radiation, chemical processes, Joule heating, and viscosity dissipation. The Keller box strategy, based on the finite difference method (FDM), is used to tackle the complex numerical problem. Graphical representations are used to show the effects of different system parts. Comprehensive tables displaying surface transfer of mass, heat, and drag rates are given for your convenience. The study focuses on how particle motion transforms kinetic energy into heat. Increased Brownian motion leads to a higher temperature profile and a reduced concentration profile. Thicker concentration profiles are created by increased Lewis number (
    $$Le$$
    ) values and rates of chemical reactions, resulting in changes in mass transfer across fluids. This in-depth investigation focuses on the complicated interactions between various variables and how they influence the Casson fluid's behaviour in the system under study.


    • Book : 8(1)
    • Pub. Date : 2025
    • Page : pp.36
    • Keyword :