can any one suggest good papers r notes r websites to learn multigrid on finite volume method for non linear equations.

If you had considered typing "multigrid" into google you would have obtained, as the first link,

www.mgnet.org/

Good luck.

Brandt, A.;"Multi-level Adaptive Computations in Fluid Dynamics," AIAA 79-1455, 1979.

Brandt, A.; "Guide to Multigrid Development, Multigrid Methods I," Lecture Notes in Mathematics, No.960, Springer Verlag, New York, 1981.

Jameson, A.; "Solution of the Euler Equations fro Two-dimensional, Transonic Flow by a Multigrid Method," Applied Mathematics and Computation, Vol. 13, pp.327-356, 1983.

Jameson, A.; "Multigrid Algorithms for Compressible Flow Calculations," Mechanical and Aerospace Engineering Report 1743, Princeton Univ. NJ, Proceedings of the Second European Conference on Multigrid Methods, Cologne, October 1985.

Martinelli, L., Jameson, A. and Grasso, F.; "A Multigrid Method for the Navier-Stokes Equations," AIAA 86-0208, Jan. 1986.

Arnone, A.; Liou, M.S.; Povinelli, L.A.; "Integration of Navier-Stokes Equations Using Dual Time Stepping and a Multigrid Method," AIAA Journal, Vol.33, No. 6, pp. 985-990, June 1995.

Trottenberg, U. Oosterlee, C., Schüller, A.; "Multigrid," Academic Press, London, UK, 2001.

Bortoli, A.L.D.; "Multigrid based Aerodynamical Simulations for the NACA 0012 Airfoil," Applied Numerical Mathematics, Vol.40, pp.337-349, 2002.

Pieter Wesseling, "An Introduction to Multigrid Methods" perhaps?