Abstract
A closed solution for one-dimensional heat conduction in a slab with nonhomogenous time-dependent boundary condition at one end and homogenous boundary condition with time-dependent heat transfer coefficient at the other end is proposed. The shifting function method developed by Lee and his colleagues is used to derive the solution of the temperature distribution of the slab. By splitting the Biot function into a constant plus a function and introducing two particularly chosen shifting functions, the system is transformed into a partial differential equation with homogenous boundary conditions only. Consequently, the transformed system can be solved by a series expansion method. Two limiting cases, including time-independent boundary condition and constant heat transfer coefficient, are proved to be identical to those in the literature. Three-term approximation used in numerical examples can always result in an error <1 % in the present study, rendering the proposed methodology efficient and accurate. Finally, the influence of parameters of heat flux function or Biot function on the temperature distribution is presented.
Similar content being viewed by others
Abbreviations
- a, b, c, d :
-
Constants used to express heat flux and Biot functions
- A n , B n :
-
Auxiliary series coefficients
- Bi:
-
Biot function
- f 1, f 2 :
-
Auxiliary time functions
- F :
-
Equal to Biot function minus a constant
- g 1, g 2 :
-
Shifting functions
- h :
-
Time-dependent heat transfer coefficient (W m−2 K−1)
- H :
-
Time-dependent heat flux (Km−1)
- k :
-
Thermal conductivity (W m−1 K−1)
- L :
-
Thickness of slab (m)
- N n :
-
Norm of try functions
- q n :
-
Time-dependent generalized coordinate
- Q n :
-
Auxiliary time-dependent function
- s 1, s 2 :
-
Parameters used to express heat flux and Biot functions
- t :
-
Time variable (s)
- T :
-
Temperature function (K)
- T r :
-
Reference temperature (K)
- T 0 :
-
Initial temperature function (K)
- v :
-
Auxiliary function
- v 0 :
-
Initial value of auxiliary function
- x :
-
Space coordinate (m)
- X :
-
Dimensionless coordinate
- α :
-
Thermal diffusivity (m2s−1)
- \({\beta_n, \bar{{\beta}}_n}\) :
-
Auxiliary series coefficients
- δ :
-
Initial value of Biot function
- ϕ n :
-
n-th eigenfunction
- \({\gamma_n, \bar{{\gamma}}_n}\) :
-
Auxiliary series coefficients
- ζ :
-
Auxiliary integration variable
- λ n :
-
n-th eigenvalue
- θ :
-
Dimensionless temperature
- \({\theta_0 ,\,\,\bar{{\theta}}_0}\) :
-
Dimensionless initial temperature functions
- τ :
-
Dimensionless time variable
- ω :
-
Parameter for heat flux function
- ξ n :
-
Auxiliary function
- ψ, ψ 0 :
-
Dimensionless time-dependent heat flux functions
- φ :
-
Auxiliary integration variable
- 0, m, n :
-
Indices
References
Özisik M.N.: Boundary Value Problems of Heat Conduction. International Textbook Company, Pennysylvania (1968)
Johansson B.T., Lesnic D.: A method of fundamental solutions for transient heat conduction. Eng. Anal. Bound. Elem. 32, 697–703 (2008)
Young D.L., Tsai C.C., Murugesan K., Fan C.M., Chen C.W.: Time-dependent fundamental solutions for homogeneous diffusion problems. Eng. Anal. Bound. Elem. 28, 1463–1473 (2004)
Zhu S.P., Liu H.W., Lu X.P.: A combination of LTDRM and ATPS in solving diffusion problems. Eng. Anal. Bound. Elem. 21, 285–289 (1998)
Amado J.M., Tobar M.J., Ramil A., Yáñez A.: Application of the Laplace transform dual reciprocity boundary element method in the modelling of laser heat treatments. Eng. Anal. Bound. Elem. 29, 126–135 (2005)
Bulgakov V., Sarler B., Kuhn G.: Iterative solution of systems of equations in the dual reciprocity boundary element method for the diffusion equation. Int. J. Numer. Method Eng. 43, 713–732 (1998)
Sahin A.Z.: Analytical solutions of transient heat conduction in semi-infinite solid with time varying boundary conditions by means of similarity transformation. Int. Commun. Heat Mass Transf. 22, 89–97 (1995)
Barletta A., Zanchini E., Lazzari S., Terenzi A.: Numerical study of heat transfer from an offshore buried pipeline under steady-periodic thermal boundary conditions. Appl. Therm. Eng. 28, 1168–1176 (2008)
Caffagni A., Angeli D., Barozzi G.S., Polidoro S.: A revised approach for one-dimensional time-dependent heat conduction in a slab. ASME J. Heat Transf. 135, 03130-1–1031301-8 (2013)
Lee S.Y., Huang T.W.: Exact solutions for heat conduction in non-uniform mediums with general time-dependent boundary conditions. J. Chin. Soc. Mech. Eng. 34, 475–485 (2013)
Lee, S.Y., Huang, C.C.: Analytic solutions for heat conduction in functionally graded circular hollow cylinders with time-dependent boundary conditions. Math. Probl. Eng, p. 8. Article ID 816385 (2013). doi:10.1155/2013/816385
Ivanov V.V., Salomatov V.V.: On the calculation of the temperature field in solids with variable heat-transfer coefficients. J. Eng. Phys. Thermophys. 9, 83–85 (1965)
Ivanov V.V., Salomatov V.V.: Unsteady temperature field in solid bodies with variable heat-transfer coefficient. J. Eng. Phys. Thermophys. 11, 266–268 (1966)
Postol’nik Yu.S.: One-dimensional convective heating with a time-dependent heat-transfer coefficient. J. Eng. Phys. Thermophys. 18, 316–322 (1970)
Kozlov V.N.: Solution of heat-conduction problem with variable heat exchange coefficient. J. Eng. Phys. Thermophys. 18, 100–104 (1970)
Becker N.M., Bivins R.L., Hsu Y.C., Murphy H.D., White A.B., Wing G.M.: Heat diffusion with time-dependent convective boundary condition. Int. J. Numer. Methods Eng. 19, 1871–1880 (1983)
Holy Z.J.: Temperature and stresses in reactor fuel elements due to time-dependent heat-transfer coefficients. Nucl. Eng. Des. 18, 145–197 (1972)
Özisik M.N., Murray R.L.: On the solution of linear diffusion problems with variable boundary condition parameters. ASME J. Heat Transf. 96, 48–51 (1974)
Moitsheki, R.J.: Transient heat diffusion with temperature-dependent conductivity and time-dependent heat transfer coefficient. Math. Probl. Eng, p. 9. Article ID 347568 (2008). doi:10.1155/2008/347568
Chen H.T., Sun S.L., Huang H.C., Lee S.Y.: Analytic closed solution for the heat conduction with time dependent heat convection coefficient at one boundary. CMES Comput. Model. Eng. Sci. 59, 107–126 (2010)
Lee S.Y., Lin S.M.: Dynamic analysis of non-uniform beams with time-dependent elastic boundary conditions. ASME J. Appl. Mech. 63, 474–478 (1996)
Lee S.Y., Lin S.M., Lee C.S., Lu S.Y., Liu Y.T.: Exact large deflection of beams with nonlinear boundary conditions. CMES Comput. Model. Eng. Sci. 30, 27–36 (2008)
Yatskiv O.I., Shvets’ R.M., Bobyk B.Ya.: Thermostressed state of a cylinder with thin near-surface layer having time-dependent thermophysical properties. J. Math. Sci. 187, 647–666 (2012)
Tu T.W., Lee S.Y.: A new analytic solution for the heat conduction with time-dependent heat transfer coefficient. World Acad. Sci. Eng. Technol. Int. J. Mech. Aerosp. Ind. Mechatron. Eng. 8, 1372–1377 (2014)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lee, S.Y., Tu, T.W. Unsteady temperature field in slabs with different kinds of time-dependent boundary conditions. Acta Mech 226, 3597–3609 (2015). https://doi.org/10.1007/s00707-015-1389-0
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00707-015-1389-0