Hartmann sayısı

Hartmann sayısı (Ha), ilk olarak Danimarkalı Julius Hartmann (1881 – 1951) tarafından tanıtılan, elektromanyetik kuvvetin viskoz kuvvete oranıdır.^[1]^[2] Sıklıkla manyetik alanlar içindeki akışkan akışlarında karşılaşılır.^[3] Şu şekilde tanımlanır:

\mathrm {Ha} =BL{\sqrt {\frac {\sigma }{\mu }}}

burada

B, manyetik alan şiddeti,
L, karakteristik uzunluk ölçeği,
σ, elektriksel iletkenlik,
μ, dinamik viskozitedir.

Ayrıca bakınız

Manyetik hidrodinamik

Kaynakça

^ Moreau, René; Molokov, Sergei S. (2007). "Julius Hartmann and His Followers: A Review on the Properties of the Hartmann Layer". Molokov, Sergei S.; Moreau, René; Moffatt, H. Keith (Ed.). Magnetohydrodynamics: Historical Evolution and Trends. Fluid Mechanics and Its Applications. 80. Springer. ss. 155-156. doi:10.1007/978-1-4020-4833-3_9. ISBN 978-1-4020-4833-3.
^ Hunt, J.C.R.; Shercliff, J.A. (January 1971). "Magnetohydrodynamics at High Hartmann Number". Annual Review of Fluid Mechanics. Cilt 3. ss. 37-62. Bibcode:1971AnRFM...3...37H. doi:10.1146/annurev.fl.03.010171.000345.
^ Cramer, Kenneth R.; Pai, Shih-i (1973). Magnetofluid Dynamics for Engineers and Applied Physicists. Scripta Publishing Company. ISBN 0-07-013425-1. LCCN 73009936.

Diğer okumalar

Jackson, J.D. (1975). "Magnetohydrodynamics and Plasma Physics". Classical Electrodynamics. Second. John Wiley & Sons. ISBN 0-471-43132-X. LCCN 75009962. Erişim tarihi: 16 Mayıs 2020. Hartmann number is indicated by letter M in analogy with Mach number for aerodynamics.

[1] Moreau, René; Molokov, Sergei S. (2007). "Julius Hartmann and His Followers: A Review on the Properties of the Hartmann Layer". Molokov, Sergei S.; Moreau, René; Moffatt, H. Keith (Ed.). Magnetohydrodynamics: Historical Evolution and Trends. Fluid Mechanics and Its Applications. 80. Springer. ss. 155-156. doi:10.1007/978-1-4020-4833-3_9. ISBN 978-1-4020-4833-3.

[2] Hunt, J.C.R.; Shercliff, J.A. (January 1971). "Magnetohydrodynamics at High Hartmann Number". Annual Review of Fluid Mechanics. Cilt 3. ss. 37-62. Bibcode:1971AnRFM...3...37H. doi:10.1146/annurev.fl.03.010171.000345.

[3] Cramer, Kenneth R.; Pai, Shih-i (1973). Magnetofluid Dynamics for Engineers and Applied Physicists. Scripta Publishing Company. ISBN 0-07-013425-1. LCCN 73009936.

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