Results 211 to 220 of about 935,302 (241)

On the conservation laws of PDEs

Reports on Mathematical Physics, 1988
Abstract The general methods of obtaining conservation laws for (non-linear) partial differential equations (PDEs) introduced in [16, 17, 21, 23] are considered and the general covariance of such methods is studied. In particular, it is shown that Vinogradov's method fails to be fully covariant in the non-linear case.
MARINO V, PRASTARO, Agostino
openaire   +4 more sources

Conservation laws

2012
Publisher Summary This chapter focuses on the conservation laws that govern the general fluid movement. The basis of the conservation of mass principle for fluid mechanics is that mass can neither be created nor destroyed within the volume or system of interest.
David A. Rubenstein   +2 more
openaire   +3 more sources

Scalar Conservation Laws [PDF]

open access: possible, 2002
In this chapter we consider the Cauchy problem for a scalar conservation law. Our goal is to show that, subject to certain conditions, there exists a unique solution to the general initial value problem. Our method will be completely constructive, and we shall exhibit a procedure by which this solution can be constructed.
Helge Holden, Nils Henrik Risebro
openaire   +1 more source

Conservation Laws

1990
The laws governing fluid motion are based on conservation of mass, momentum, and energy. For the Eulerian description of fluid motion, these three conservation laws are coupled nonlinear partial differential equations. However, to produce a potentially solvable set of equations, a constitutive relationship must be specified.
Pijush K. Kundu   +2 more
openaire   +4 more sources

On the optimization of a conservation law

Calculus of Variations and Partial Differential Equations, 2004
Consider the Cauchy problem for a conservation law and assume that an integral functional on its solution is defined. In this note we obtain an Euler-Lagrange equation for the stationary points of this functional. An application to the optimal management of traffic flows is considered.
COLOMBO, Rinaldo Mario, GROLI ALESSANDRO
openaire   +2 more sources

CONSERVATION LAWS

1972
Publisher Summary This chapter discusses the conservation law resulting from the homogeneity of time. By virtue of this homogeneity, the Lagrangian of a closed system does not depend explicitly on time. The chapter also discusses a conservation law that follows from the homogeneity of space.
Lev Davidovich Landau, E.M. Lifshitz
openaire   +3 more sources

On approximation of local conservation laws by nonlocal conservation laws

Journal of Mathematical Analysis and Applications, 2019
Abstract We show that for monotone initial datum the solution of nonlocal conservation laws converges to the entropy solution of the corresponding local conservation laws when the nonlocal reach tends to zero. This particularly covers the principle cases of conservation laws: shocks and rarefactions.
Alexander Keimer, Lukas Pflug
openaire   +2 more sources

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