Journal of Engineering Mathematics

, Volume 114, Issue 1, pp 1–17 | Cite as

Parameterisations of slow invariant manifolds: application to a spray ignition and combustion model

  • Sergei S. SazhinEmail author
  • Elena Shchepakina
  • Vladimir Sobolev


A wide range of dynamic models, including those of heating, evaporation and ignition processes in fuel sprays, is characterised by large differences in the rates of change of variables. Invariant manifold theory is an effective technique for investigation of these systems. In constructing the asymptotic expansions of slow invariant manifolds, it is commonly assumed that a limiting algebraic equation allows one to find a slow surface explicitly. This is not always possible due to the fact that the degenerate equation for this surface (small parameter equal to zero) is either a high degree polynomial or transcendental. In many problems, however, the slow surface can be described in a parametric form. In this case, the slow invariant manifold can be found in parametric form using asymptotic expansions. If this is not possible, it is necessary to use an implicit presentation of the slow surface and obtain asymptotic representations for the slow invariant manifold in an implicit form. The results of development of the mathematical theory of these approaches and the applications of this theory to some examples related to modelling combustion processes, including those in sprays, are presented.


Invariant manifold Spray ignition and combustion The system-order reduction 



E. Shchepakina was supported by the Ministry of Education and Science of the Russian Federation (Project RFMEFI58716X0033). S. Sazhin was supported by EPSRC (UK) (grant EP/M002608/1).


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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  • Sergei S. Sazhin
    • 1
    Email author
  • Elena Shchepakina
    • 2
  • Vladimir Sobolev
    • 2
  1. 1.Sir Harry Ricardo Laboratories, Advanced Engineering Centre, School of Computing, Engineering and MathematicsUniversity of BrightonBrightonUK
  2. 2.Samara National Research UniversitySamaraRussia

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