A solution to the problem of transient one-dimensional heat conduction in a finite domain is developed through the use of parametric fractional derivatives. The heat diffusion equation is rewritten as anomalous diffusion, and both analytical and numerical solutions for the evolution of the dimensionless temperature profile are obtained. For large slab thicknesses, the results using fractional order derivatives match the semi-infinite domain solution for Fourier numbers, . For thinner slabs, the fractional order solution matches the results obtained using the integral transform method and Green’s function solution for finite domains. A correlation is obtained to display the variation of the fractional order as a function of dimensionless time and slab thickness at the boundary .
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Approximation of Transient 1D Conduction in a Finite Domain Using Parametric Fractional Derivatives
Sergio M. Pineda,
Sergio M. Pineda
School of Engineering,
University of California
, 5200 North Lake Rd., Merced, CA 95343
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Gerardo Diaz,
Gerardo Diaz
Mem. ASME
School of Engineering,
e-mail: gdiaz@ucmerced.edu
University of California
, 5200 North Lake Rd., Merced, CA 95343
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Carlos F. M. Coimbra
Carlos F. M. Coimbra
Mem. ASME
School of Engineering,
University of California
, 5200 North Lake Rd., Merced, CA 95343
Search for other works by this author on:
Sergio M. Pineda
School of Engineering,
University of California
, 5200 North Lake Rd., Merced, CA 95343
Gerardo Diaz
Mem. ASME
School of Engineering,
University of California
, 5200 North Lake Rd., Merced, CA 95343e-mail: gdiaz@ucmerced.edu
Carlos F. M. Coimbra
Mem. ASME
School of Engineering,
University of California
, 5200 North Lake Rd., Merced, CA 95343J. Heat Transfer. Jul 2011, 133(7): 071301 (6 pages)
Published Online: April 1, 2011
Article history
Received:
May 23, 2010
Revised:
January 11, 2011
Online:
April 1, 2011
Published:
April 1, 2011
Citation
Pineda, S. M., Diaz, G., and Coimbra, C. F. M. (April 1, 2011). "Approximation of Transient 1D Conduction in a Finite Domain Using Parametric Fractional Derivatives." ASME. J. Heat Transfer. July 2011; 133(7): 071301. https://doi.org/10.1115/1.4003544
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