Journal of Enhanced Heat Transfer Theory and Application in High Performance Heat and Mass Transfer

ISSN for PRINT: 1065-5131

For Online Access

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2002, Volume9

Issue 2

52 pages

Issue price - $138.00

Masayuki Kaneda
Institute of Advanced Material Study, Kyushu University, Kasuga 816-8580, Japan

Toshio Tagawa
Institute of Advanced Material Study, Kyushu University, Kasuga, Japan

Hiroyuki Ozoe
Institute of Advanced Material Study, Kyushu University, Kasuga, Japan; and Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China

Natural convection of air under the influence of a magnetic field was numerically computed in a rectangular enclosure of 1 × 2 × 1 length in the x, y and z directions, respectively, heated from one 1 × 2 wall and cooled from an opposing 1 × 2 wall with four other walls thermally adiabatic. An electric coil of one-turn for magnetic field was considered at the center of the y-directional edge of the enclosure. This y-directional edge of the enclosure was further inclined with the x-axis edge kept horizontally. Sample computations were carried out for Pr = 0.71, Ra = 10⁴, 10⁵, and 2 × 10⁵, and angle of inclination φ = 0, π/6, π/3, and π/2 [rad] for magnetic strength parameter γ = 0, 1, and 3. Without a magnetic field, the average Nusselt number ranged between 3.3 and 4.4 for φ = 0 − π/2. For γ = 3, they attained 6.3−7.4 due to the driving force of the magnetic field. Detailed flow modes are demonstrated herein.

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