By Dr. Wolf-Jürgen Beyn (auth.), T. Küpper, R. Seydel, H. Troger (eds.)

ISBN-10: 3034872410

ISBN-13: 9783034872416

ISBN-10: 3034872437

ISBN-13: 9783034872430

The convention on BIFURCATIONS: research, ALGORITHMS, purposes came about in Dortmund in August 18 - 22, 1986. extra then one hundred fifty Scientists from sixteen international locations participated within the assembly, between them mathematicians, engi­ neers, and physicists. A vast spectrum of latest effects on bifurcation was once coated through forty nine talks. the variety of the diversity of taken care of subject matters and of concerned fields encouraged fruitful discussions. 36 refereed papers are contained in those complaints. the themes coated deal with bifurcation difficulties, starting from theoretical investigations to numerical effects, with emphasis positioned upon functions. The extra theoreti­ cal papers contain the themes symmetry breaking, hold up differential equations, Cornu spirals, homoclinic orbits, and selfsimilarity. other forms of bifurcations are taken care of: Hopf bifurcation, bifurcation from non-stop spec­ trum, advanced bifurcation, and bifurcation close to tori. a number of numerical as­ pects are mentioned, between them continuation, block removing, and spectral equipment. Algorithms are proposed for approximating manifolds, calculating pe­ riodic recommendations and dealing with multi-parameter difficulties. plentiful house is dedicated to· purposes. Classical phenomena from fluid mechanics (such as convection rolls and th~ Taylor vortex problem), buckling, and reaction-diffusion professional­ blems are thought of. different purposes of bifurcations contain railway car dynamics, special effects, semiconductors, drilling tactics, simu­ lation of oil reservoirs, and rotor dynamics. The complaints mirror present study in bifurcation. they're an try to assemble researchers from differ~nt disciplines to stimulate universal attempt in the direction of a greater realizing and dealing with of bifurcation professional­ blems.

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Extra resources for Bifurcation: Analysis, Algorithms, Applications: Proceedings of the Conference at the University of Dortmund, August 18–22, 1986

Sample text

The basic state T has assignments (-,-) in {a < 0,6 < O}, (+,+) in {a > 0,6 > O} and (+,-) in {a > 0,6 < O} and {a < 0,6 > O}. 4. , in the model of Section 2 they correspond to pulsating mixed mode patterns which are commonly called standing waves. The behaviour of the SW-solutions is more difficult to analyze than that of the solutions described in the preceeding section. First, one sets 6 = -e 2 (v + K), a = (1'+ vp)e 2 + ye 4 , y being a yet undetermined parameter, and rescales the variables according to (x,y)+(ex,ey), t+t/e 2 , considering e as a small parameter.

And T. end in the same cusp as well for increasing as for decreasing value of D•. What concerns the branch M, we could report that the curve starting at M3 also contains a pair of neighbour-cusps for which a continuation in a three-parameter space certainly would be interesting. The continuation curves for branches T and M can be found on figs. 3 and 4. 2 The asymmetric branches. Let us first note that for this model and the applied boundary conditions, turning points of curves with asymmetric profiles always have to appear in pairs, except in the case of a bifurcation-turning point or in other words a pitchfork bifurcation point.

Appl. Math. Phys. (ZAMP) 37, 608-623. Chandrasekhar, S. (1961) Hydrodynamic and hydromagnetic stability. Oxford Clarendon Press. , and Guckenheimer, J. (1983) Convective Transitions induced by a varying aspect ratio. Phys. Rev. A27, 408-417. B. (1985) Some bifurcation diagrams for Taylor vortex flows. Phys. Fluids 28, 1248-1252. H. (1981) Convection in a rotating cylindrical annulus, II. Transitions to asymmetric and vacillating flow. J. , 174, 313~326. A. (1962) The nonlinear interaction of two disturbances in the thermal convection problem.

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Bifurcation: Analysis, Algorithms, Applications: Proceedings of the Conference at the University of Dortmund, August 18–22, 1986 by Dr. Wolf-Jürgen Beyn (auth.), T. Küpper, R. Seydel, H. Troger (eds.)


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