Reactive burn models for heterogeneous energetic material initiation must account for chemistry as well as microstructure to predict shock-to-detonation transition. Upon transient (strong) shock loading, the collapse of individual voids leads to ignition of hotspots, which then grow and interact to completely consume the surrounding material. This paper shows that a length scale measuring the perimeter of the evolving burn front in a field of hotspots, in combination with a topological function/form factor for the hotspot field, is a key input to a framework for constructing a meso-informed reaction rate model. The approach suggested in this paper provides a route to constructing reaction rate models with only two quantities of interest, viz., the burn front perimeter and burn front velocity, which are physically evocative of the underlying hotspot physics and can be quantified individually using meso-scale simulations. It overcomes the problem of calibrating many free parameters that appear in phenomenological burn models and therefore suggests a route to developing general frameworks for simulation-derived meso-informed burn models.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Physically Evocative Meso-Informed Burn Model: Topology of Evolving Hotspot Fields


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2022-05-24


    Format / Umfang :

    15 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Unified Approach for Meso-Informed Burn Models in Shocked Energetic Materials

    Udaykumar, H. S. / Sen, Oishik / Lee, Sangyup et al. | AIAA | 2020


    Generation device for vehicle-evocative sound and generation method for vehicle-evocative sound

    ASAO KOJI / TANAKA JUNICHI | Europäisches Patentamt | 2016

    Freier Zugriff

    Concept car - Fiat Trepiùno, evocative innovation

    Baruffaldi, Silvia | Online Contents | 2004


    Meso-level hotspot identification for suburban arterials

    Wang, Xuesong / Pei, Yingying / Yang, Minming et al. | Elsevier | 2021


    Evocative Lighting Design for Premium Interiors

    Dipl.-Ing. Winklbauer, Manfred / Dipl.-Phys. Bayersdorfer, Bernhard / Dipl.-Phys. Lang, Josef | Springer Verlag | 2016