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lcs3.c, lcss3.c, lcsss3.c  -  higher-order Godunov-type schems for 1D gas dynamics

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Features:

 - higher order explicit scheme for 1D gas dynamics conservation laws.
 - linearized characterictic-based solver (LCS) is used to evaluate fluxes:

  lcs3.c:  fast noniterative LCS solver - subsonic 1D Riemann problem test case
  lcss3.c: iterative version LCS solver - supersonic 1D R. p. test case
  lcsss3.c: weakly linearized LSC solver - the same subsonic test case

 - three-step Runge-Kutta time integration
 - limited piecewise-parabolic reconstruction 

Output: file "input.dat" to plot parameters along x.

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lcs.ini - initial data for all three "lcs*" programs

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analyt.c - exact solution to supersonic (20:1) Riemann problem.

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matrices.txt - matrices used in ([A] = [S-1][L][S]) transform, for reference.

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README - this file

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See also: 
	www.geocities.com/andrei_chernousov/CODES/solver.ps.gz 
        (description of subsonic LCS solver that used in "lcs3.c").
	
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Last updated:

	November 12, 2001.

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