Effect of Heat Loss on Propagation Limits of Combustion Fronts in Heterogeneous Mixtures

Bharat, Naine Tarun; Mishra, D.P.; Gundawar, Manoj Kumar

doi:10.1080/00102202.2019.1565534

Cited by 9 publications

(1 citation statement)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Например, в сферической наночастице со структурой Ni@Al «ядро -оболочка» [8] сферическое Ni-ядро состоит из кристаллических ячеек атомов Ni, а окружающая ядро сферическая оболочка содержит кристаллические ячейки атомов Al. Интерес к таким структурам обоснован тем, что структурные изменения и фазовые превращения в наноблоках со структурой «ядро -оболочка» существенно влияют на формирование структурных свойств и элементарных процессов в мезо-и макросистемах реагирующей среды [9][10][11][12][13]. Компьютерное моделирование на высокопроизводительных вычислительных платформах вместо проведения физических экспериментов позволяет избежать больших затрат времени и материальных ресурсов.…”

Section: Introductionunclassified

Recognition of Synthesized Intermetallic Interlayers at the Interface in Ti@Al "Core — Shell" Nanoparticles Based on Computer Molecular-Dynamic Simulation

Jordan¹,

Shmakov²

2023

Известия АлтГУ

View full text Add to dashboard Cite

The paper presents the results of applying a new method, previously developed by the authors, based on precalculated sets of 3D distributions of a matter density. The method is designed to recognize the spatial 3D distributions of the synthesized intermetallic compounds in the volume of a nanoparticle. A set of 3D distributions of a matter density in the volume of a cubic Ti@Al core — shell nanoparticle corresponds to a set of successive time points. It is calculated based on the results of the computer molecular dynamics simulation of self-propagating high temperature synthesis in the nanoparticle. Computational experiments are performed using the LAMMPS software package. Based on the obtained results, thermal and microstructural analyses are performed, confirming the multistage mechanism for the formation of intermetallic phases during the SHS reaction in the Ti-Al reaction medium. The sets of 3D distributions of the matter density and 3D distributions of synthesized intermetallic compounds in the volume of a nanoparticle corresponding to the sequence of time points are calculated. The paper shows the advantage of the method for recognizing 3D distributions of synthesized intermetallic compounds, proposed by the authors, over the methods of similar analysis built into the OVITO software package.

show abstract

Section: Introductionunclassified

Recognition of Synthesized Intermetallic Interlayers at the Interface in Ti@Al "Core — Shell" Nanoparticles Based on Computer Molecular-Dynamic Simulation

Jordan¹,

Shmakov²

2023

Известия АлтГУ

View full text Add to dashboard Cite

show abstract

Simulation of Heat Transfer and Propagation Velocity for Different Heat Loss Conditions for Guided Propagation Fronts in Reactive Multilayer Foils

Daneshpazhoonejad,

Shekhawat,

Döll

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

Engineering self‐propagating reactions in reactive material systems requires an understanding of critical ignition and propagation conditions. These conditions are governed by the material properties of the reactive materials responsible for net heat generation, as well as by external environmental conditions that primarily determine net heat loss. In this study, it is aimed to utilize a numerical model to investigate the critical conditions for reaction propagation based solely on the heat‐transfer equation, enabling thorough examination with significantly low computational effort. Comparing simulations with experiments demonstrates a high level of agreement in predicting reaction propagation. Additionally, this numerical model provides valuable information regarding heat distribution in substrate materials.

show abstract

Transfer of Self‐Sustained Reactions between Thermally Coupled Reactive Material Elements

Shekhawat,

Breiter,

Döll

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

System engineering requires the implementation of assembly methods allowing the formation of functional elements according to a desired system design. This is possible by joining prefabricated elements on a desired place in the system or by forming functional materials at wanted locations. Both approaches need temperature treatment. A typical system in part consists of materials restricting the use of annealing procedures above 300 °C. For this reason, higher‐temperature operations have to be localized to the point of use and transferred to the next reactive element. A further requirement is the reduction of the thermal budget of the localized joining process implementing ultrashort heat treatment operations. Reactive metallic multilayer offers the combined possibility of implementing a localized heat source and the formation of a functional intermetallic alloy. The article demonstrates the feasibility of a heat and reaction transfer chain in a topological structured pattern consisting of localized reactive multilayer materials under conditions of their gasless combustion. For the used Ni/Al multilayer material system, the critical (obstacle thickness) dimensions for the reaction and heat transfer are determined using a high‐speed camera and pyrometer measurements.

show abstract

Effect of Heat Loss on Propagation Limits of Combustion Fronts in Heterogeneous Mixtures

Cited by 9 publications

References 32 publications

Recognition of Synthesized Intermetallic Interlayers at the Interface in Ti@Al "Core — Shell" Nanoparticles Based on Computer Molecular-Dynamic Simulation

Recognition of Synthesized Intermetallic Interlayers at the Interface in Ti@Al "Core — Shell" Nanoparticles Based on Computer Molecular-Dynamic Simulation

Simulation of Heat Transfer and Propagation Velocity for Different Heat Loss Conditions for Guided Propagation Fronts in Reactive Multilayer Foils

Transfer of Self‐Sustained Reactions between Thermally Coupled Reactive Material Elements

Contact Info

Product

Resources

About