Chaotic and Hopf Bifurcation Analysis of the Stretch-Twist-Fold Flow System in a Fractional Order

Authors

  • Sardar Rashid Fattah Department of Mathematics, Faculty of Science, Soran University, Kawa St.-Soran, Erbil, Iraq
  • Niazy Hady Hussein Department of Mathematics, College of Education, Salahadin University-Erbil, Erbil ,Kurdistan, Iraq
  • Sheelan Abdulkader Osman Department of Mathematics, Faculty of Science, Soran University, Kawa St.-Soran, Erbil, Iraq

DOI:

https://doi.org/10.21271/ZJPAS.38.2.6

Keywords:

stretch-twist-fold flow system, Caputo fractional order derivative, Hopf bifurcation, Adams-type predictor-corrector approach, Lyapunov exponents

Abstract

This study investigates a modified fractional Stretch-Twist-Fold (STF) model with a Caputo fractional-order derivative. The local stability and Hopf bifurcation of equilibrium points are analyzed by using an Adams-type predictor-corrector method implemented in MATLAB software. We study the influence of variation of parameters on the system's behavior and verify chaotic dynamics by computing maximal Lyapunov exponents. In addition to supporting analytical findings, numerical simulations are used to reveal chaotic characteristics such as bifurcations, phase portraits, limit cycles, and attractive chaotic sets, highlighting the crucial role of the fractional-order derivative in the system's dynamic behavior.

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Published

2026-04-30

How to Cite

Sardar Rashid Fattah, Niazy Hady Hussein, & Sheelan Abdulkader Osman. (2026). Chaotic and Hopf Bifurcation Analysis of the Stretch-Twist-Fold Flow System in a Fractional Order. Zanco Journal of Pure and Applied Sciences, 38(2), 79–101. https://doi.org/10.21271/ZJPAS.38.2.6

Issue

Section

Mathematics, Physics and Geological Sciences