Computational Model of Phase Transformations in Thermo-Chemical Cathodes Using Kinetic Approach

A.A. Kavokin; I.H. Kazmi; B. Munir

doi:10.4028/www.scientific.net/KEM.510-511.9

Paper Titles

Preface, Committees and Sponsors

New Developments in NdFeB-Based Permanent Magnets
p.1

Computational Model of Phase Transformations in Thermo-Chemical Cathodes Using Kinetic Approach
p.9

Recent Advances in Fatigue Crack Growth
p.15

Viscoelastic Response of HTPB Based Solid Fuel to Horizontal and Vertical Storage Slumping Conditions and it's Affect on Service Life
p.22

High Temperature Oxidation Behaviour of Nickel Based Nanostructured Composite Coatings
p.32

Surface Modification and Characterization of Bulk Amorphous Materials
p.43

Structural, Electrical and Dielectric Properties of Nanocrystalline Mg-Zn Ferrites
p.51

An Inquisitive into the Indirect Measurement and Comparison of the Viscosity of Nanoconfined Polystyrene Nanoparticles
p.58

HomeKey Engineering MaterialsKey Engineering Materials Vols. 510-511Computational Model of Phase Transformations in...

Computational Model of Phase Transformations in Thermo-Chemical Cathodes Using Kinetic Approach

Abstract:

The paper presents the results of modeling of the processes of phases transformations occurring in cathode of plasmatron with zirconium insertion. Model describes temperature and liquid-solid phase transformation in cathode considering kinetics of transformation in accordance with a state diagram. The comparison between one-dimensional mathematical models was exploited for estimation of the kinetics coefficient. First model is based on well-known heat equation with Stefans condition on the free boundary between liquid and solid phases [. The standard analytical self-similar solution for two-phase case is applied. In the second model, for heat equation instead of Stefans conditions, differential equations of kinetics are used.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 510-511)

Pages:

9-14

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.510-511.9

Citation:

Cite this paper

Online since:

May 2012

Authors:

A.A. Kavokin, I.H. Kazmi, B. Munir

Keywords:

Mathematical Models, Phase Transformation, Thermo-Chemical Cathodes

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] Gupta S.C. The classical Stefan problem. , Elsevier, 2003, p. p.385.

Google Scholar

[2] Kavokin, A.A., Kantaeva, R.N., Krasnov Ya.A. Modeling of thermo chemical and diffusive intraelectrode processes during arcing, Proceedings of international symposium on electrical contacts, theory and applications, Almaty, Kazakhstan, 1993. pp.216-220.

Google Scholar

[3] Kavokin A.A., Kazmi I. H., Mukazhanov V.N. Mathematical model of phase transformations in thermo-chemical cathodes with zirconium insertion", in Proc. ISAM, 07, Islamabad, Sept. 03-08, (2007).

Google Scholar

[4] Kavokin A. A, Kharin S.N., Yasir Munir. Comparison Stefan's and kinetic models of phases transformation processes, Herald of Kazakh-British University, #3(10), 2009, pp.47-53.

Google Scholar

[5] Anshakov A. S, Kumenko D.O., Urbakh E.H., Urbakh A.E., Investigation and development of high-efficient thermo chemical cathodes for arc plasmatron, Electric Power Engineering, IEEE, (2005).

DOI: 10.1109/korus.2005.1507716

Google Scholar

[6] Incropera F.P. DeWitt D. P Fundamentals of Heat and Mass Transfer. 5th ed. Wiley stud. Edition, (2005).

Google Scholar