ArticleOriginal scientific text

Title

Qualitative investigation of nonlinear differential equations describing infiltration of water

Authors 1

Affiliations

  1. Group of Applied Mathematics, Wuhan College of Metallurgic Management Cadre, Wuhan, Hubei, 430081, P.R. China

Abstract

A nonlinear differential equation of the form (q(x)k(x)u')' = F(x,u,u') arising in models of infiltration of water is considered, together with the corresponding differential equation with a positive parameter λ, (q(x)k(x)u')' = λF(x,u,u'). The theorems about existence, uniqueness, boundedness of solution and its dependence on the parameter are established.

Keywords

water percolation and seepage, similarity solution, nonlinear differential equation, qualitative behavior

Bibliography

  1. F. V. Atkinson and L. A. Peletier, Similarity profiles of flows through porous media, Arch. Rational Mech. Anal. 42 (1971), 369-379.
  2. F. V. Atkinson and L. A. Peletier, Similarity solutions of the nonlinear diffusion equation, Arch. Rational Mech. Anal. 54 (1974), 373-392.
  3. J.-P. Aubin and A. Cellina, Differential Inclusions, Springer, 1984.
  4. J. Bear, D. Zaslavsky and S. Irmay, Physical Principles of Water Percolation and Seepage, UNESCO, 1968.
  5. R. C. Buck and E. F. Buck, Advanced Calculus, McGraw-Hill, 1978.
  6. M. Kisielewicz, Differential Inclusions and Optimal Control, Kluwer Academic Publ., 1990.
  7. W. Okrasiński, On a nonlinear differential equation, Ann. Polon. Math. 49 (1989), 237-245.
  8. S. Staněk, Nonnegative solutions of a class of second order nonlinear differential equations, Ann. Polon. Math. 57 (1992), 71-82.
  9. S. Staněk, Qualitative behavior of a class of second order nonlinear differential equations on halfline, Ann. Polon. Math. 58 (1993), 65-83.
Pages:
39-57
Main language of publication
English
Received
1993-10-04
Accepted
1994-05-02
Published
1995
Exact and natural sciences