March  2013, 12(2): 755-769. doi: 10.3934/cpaa.2013.12.755

The Riemann problem of conservation laws in magnetogasdynamics

1. 

Department of Mathematics, Shanghai University, Shanghai, 200444, China

Received  July 2011 Revised  July 2012 Published  September 2012

In this paper, we study the Riemann problem for a simplified model of one dimensional ideal gas in magnetogasdynamics. By using the characteristic analysis method, we prove the global existence of solutions to the Riemann problem constructively under the Lax entropy condition. The image of contact discontinuity in magnetogasdynamics is a curve with $u=Const.$ in the $(\tau,p,u)$ space. Its projection on the $(p,u)$ plane is a straight line that parallels to the $p$-axis. In contrast with the problem in gas dynamics, the result causes more complicated and difficult than that in gas dynamics.
Citation: Yanbo Hu, Wancheng Sheng. The Riemann problem of conservation laws in magnetogasdynamics. Communications on Pure & Applied Analysis, 2013, 12 (2) : 755-769. doi: 10.3934/cpaa.2013.12.755
References:
[1]

W. R. Hu, "Universe Magnetogasdynamics" (in Chinese),, Science Press, (1987).

[2]

D. Q. Li and T. H. Qin, "Physics and Partial Differential Equations" (in Chinese),, Higher Education Press, (2005).

[3]

H. Cabannes, "Theoretical Magnetofluid Dynamics, in: Applid Mathematics and Mechanics,", Academic Press, (1970).

[4]

R. Gundersen, "Linearized Analysis of One-dimensional Magnetohydrodynamic Flows,", Springer-Verlag, (1964).

[5]

R. S. Myong and P. L. Roe, Shock waves and rarefaction waves in magnetohydrodynamics part 1. a model system,, J. Plasma Phys., 58 (1997), 485. doi: 10.1017/S002237789700593X.

[6]

R. S. Myong and P. L. Roe, Shock waves and rarefaction waves in magnetohydrodynamics part 2. the MHD system,, J. Plasma Phys., 58 (1997), 521. doi: 10.1017/S0022377897005941.

[7]

M. Torrilhon, "Exact Solver and Uniqueness Conditions for Riemann Problem of Ideal Magnetohydrodynamics,", Seminar f\, (2002).

[8]

T. R. Sekhar and V. D. Sharma, Riemann problem and elementary wave interactions in isentropic magnetogasdynamics,, Nonlinear Analysis: Real World Applications, 11 (2010), 619. doi: 10.1016/j.nonrwa.2008.10.036.

[9]

R. Courant and K. O. Friedrichs, "Supersonic Flow and Shock Waves,", Intersience Publisher, (1999).

[10]

P. D. Lax, Hyperbolic system of conservation laws II,, Comm. Pure Appl. Math., 10 (1957), 537. doi: 10.1002/cpa.3160100406.

[11]

J. Glimm, Solutions in the large for nonlinear hyperbolic system of equations,, Comm. Pure Appl. Math., 18 (1963), 697. doi: 10.1002/cpa.3160180408.

[12]

T. P. Liu, Existence and uniqueness theorems for Riemann problems,, Trans. Amer. Math. Soc., 212 (1975), 375. doi: 10.1090/S0002-9947-1975-0380135-2.

[13]

T. Chang and L. Hsiao, "The Riemann Problem and Interaction of Waves in Gas Dynamics,", Longman, (1989).

[14]

J. Smollor, "Shock Waves and Reaction Diffusion Equations,", Springer Verlag, (1994).

[15]

Y. B. Hu and W. C. Sheng, Elementary waves of conservation laws in magnetogasdynamics (in Chinese),, Commun. Appl. Math. Comput., 23 (2009), 49.

show all references

References:
[1]

W. R. Hu, "Universe Magnetogasdynamics" (in Chinese),, Science Press, (1987).

[2]

D. Q. Li and T. H. Qin, "Physics and Partial Differential Equations" (in Chinese),, Higher Education Press, (2005).

[3]

H. Cabannes, "Theoretical Magnetofluid Dynamics, in: Applid Mathematics and Mechanics,", Academic Press, (1970).

[4]

R. Gundersen, "Linearized Analysis of One-dimensional Magnetohydrodynamic Flows,", Springer-Verlag, (1964).

[5]

R. S. Myong and P. L. Roe, Shock waves and rarefaction waves in magnetohydrodynamics part 1. a model system,, J. Plasma Phys., 58 (1997), 485. doi: 10.1017/S002237789700593X.

[6]

R. S. Myong and P. L. Roe, Shock waves and rarefaction waves in magnetohydrodynamics part 2. the MHD system,, J. Plasma Phys., 58 (1997), 521. doi: 10.1017/S0022377897005941.

[7]

M. Torrilhon, "Exact Solver and Uniqueness Conditions for Riemann Problem of Ideal Magnetohydrodynamics,", Seminar f\, (2002).

[8]

T. R. Sekhar and V. D. Sharma, Riemann problem and elementary wave interactions in isentropic magnetogasdynamics,, Nonlinear Analysis: Real World Applications, 11 (2010), 619. doi: 10.1016/j.nonrwa.2008.10.036.

[9]

R. Courant and K. O. Friedrichs, "Supersonic Flow and Shock Waves,", Intersience Publisher, (1999).

[10]

P. D. Lax, Hyperbolic system of conservation laws II,, Comm. Pure Appl. Math., 10 (1957), 537. doi: 10.1002/cpa.3160100406.

[11]

J. Glimm, Solutions in the large for nonlinear hyperbolic system of equations,, Comm. Pure Appl. Math., 18 (1963), 697. doi: 10.1002/cpa.3160180408.

[12]

T. P. Liu, Existence and uniqueness theorems for Riemann problems,, Trans. Amer. Math. Soc., 212 (1975), 375. doi: 10.1090/S0002-9947-1975-0380135-2.

[13]

T. Chang and L. Hsiao, "The Riemann Problem and Interaction of Waves in Gas Dynamics,", Longman, (1989).

[14]

J. Smollor, "Shock Waves and Reaction Diffusion Equations,", Springer Verlag, (1994).

[15]

Y. B. Hu and W. C. Sheng, Elementary waves of conservation laws in magnetogasdynamics (in Chinese),, Commun. Appl. Math. Comput., 23 (2009), 49.

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