A free boundary problem for the wave equation
โ Scribed by Willard L. Miranker
- Publisher
- Elsevier Science
- Year
- 1961
- Tongue
- English
- Weight
- 582 KB
- Volume
- 271
- Category
- Article
- ISSN
- 0016-0032
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โฆ Synopsis
WAVE EQUATION
In this paper we discuss the motion of a frictionless piston contained in a tube which is filled with a hydraulic fluid.
The fluid is assumed to be inviscid but compressible.
The mathematical problem is that of solving the wave equation in a domain with an a priori unknown boundary (the piston trajectory).
The methods for solving the problem amount essentially to a wave tracing technique.
The report is concluded with some numerical results and a comparison of these results with an entirely linear analysis of the same problem.
๐ SIMILAR VOLUMES
In this paper, we study the free-boundary problem associated with a singular diffusion equation. An entropy equality derived by the authors for BV solutions in an earlier paper is used in its formulation. Existence, uniqueness, and regularity results are obtained.
We employ elliptic regularization and monotone method. We consider XโR n (n 1) an open bounded set that has regular boundary C and Q = Xร(0,T), T>0, a cylinder of R n+1 with lateral boundary R = Cร(0,T).