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Dynamic properties of the Fisher–Kolmogorov–Petrovskii–Piscounov equation with the deviation of the spatial variable
- Source :
- Automatic Control and Computer Sciences. 50:603-616
- Publication Year :
- 2016
- Publisher :
- Allerton Press, 2016.
-
Abstract
- We consider the problem of the density wave propagation of a logistic equation with the deviation of the spatial variable and diffusion (the Fisher–Kolmogorov equation with the deviation of the spatial variable). The Ginzburg–Landau equation was constructed in order to study the qualitative behavior of the solution near the equilibrium state. We analyzed the profile of the wave equation and found conditions for the appearance of oscillatory regimes. The numerical analysis of the wave propagation shows that, for a fairly small spatial deviation, this equation has a solution similar to that the classical Fisher–Kolmogorov equation. An increase in this spatial deviation leads to the existence of the oscillatory component in the spatial distribution of solutions. A further increase in the spatial deviation leads to the destruction of the traveling wave. This is expressed in the fact that undamped spatiotemporal fluctuations exist in a neighborhood of the initial perturbation. These fluctuations are close to the solution of the corresponding boundary value problem with periodic boundary conditions. Finally, when the spatial deviation is large enough we observe intensive spatiotemporal fluctuations in the whole area of wave propagation.
- Subjects :
- Wave propagation
Mathematical analysis
02 engineering and technology
Wave equation
01 natural sciences
Density wave theory
010101 applied mathematics
Control and Systems Engineering
Signal Processing
Attractor
0202 electrical engineering, electronic engineering, information engineering
Periodic boundary conditions
Fisher–Kolmogorov equation
020201 artificial intelligence & image processing
Boundary value problem
0101 mathematics
Logistic function
Software
Mathematics
Subjects
Details
- ISSN :
- 1558108X and 01464116
- Volume :
- 50
- Database :
- OpenAIRE
- Journal :
- Automatic Control and Computer Sciences
- Accession number :
- edsair.doi...........69eb1c060ad7d5c8271d0fb8f5c4461b