磁場におかれた垂直平板からの電導性流体の自然対流

概要

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The natural convection of an electrically conducting fluid on a vertical plate in the presence of a transverse magnetic field is analysed for the magnetic field depending on the λ th power of the vertical distance. The effect of the magnetic field on the heat transfer may be uniformlly described by the magnetic parameter Z=Z_0 (x/L)^<2λ+1/2>, where Z_0=2M^^-^2/G_<rL>^<1/2> (M^^- : Hartmann number, G_<rL> : Grashof number, L : plate length). The local Nusselt number is reduced as the magnetic parameter is increased, for example, 14% at Z=1,45% at Z=5 for Prandtl number P_r〜0.01,while 11% at Z=1,36% at Z=5 for P_r〜1. Also, if the total magnetic field intensity is equal, the larger effect for the mean Nusselt number is expected in the case λ>0.
一般社団法人日本機械学会の論文
1963-08-25