OHMIC ATTENUATION AND TEMPERATURE DISTRIBUTION IN INHOMOGENEOUS RAILGUN WITH 3-D FINITE ELEMENT METHOD

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KESHTKAR ASGHAR; SOLEYMANI MOHAMMAD; SHOULAEI A.

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Journal: INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN) Year:2001 | Volume:12 | Issue:3 Page(s): 1-10

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Title

OHMIC ATTENUATION AND TEMPERATURE DISTRIBUTION IN INHOMOGENEOUS RAILGUN WITH 3-D FINITE ELEMENT METHOD

Author(s)

KESHTKAR ASGHAR | SOLEYMANI MOHAMMAD | SHOULAEI A. | Issue Writer Certificate

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Abstract

Railgun is a device used for accelerating armature to very high velocity. Railgun obeys coupled electromagnetic and thermodynamic equations. In this paper, 3-D railgun thermodynamic equaiton is derived. Thermal conductivity and specific heat are considered as temperature dependent. so materials become inhomogenous. Galerkin weighted residue and .(inite elcment methods are used to discrete and solve the equation This analysis result temperature distribution. this determines hot or melted points of railgun. The temperature changes arc used for calculating electric and thermal properties of rails and armature.Since railgun is a 3-D structure with coupled complex equations, it requires large amount of memory for numerical investigation. I1'urthermore, since the materials of rails and armature arc inhomogeneous the problem is transient time and so descretization should be done in time also. The descretization is performed by finite difference method. Non-uniform meshes are Used to produce a relatively accurate model. Fine meshes are applied to sensitive regions and coarse meshes to other regions.the result shows that the temperature on the back of armature is very high with respect to other points. The result of this analysis can be used to specify the types and dimensions of the materials appropriate for railgun mechanical design phase.

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APA: Copy

KESHTKAR, ASGHAR, SOLEYMANI, MOHAMMAD, & SHOULAEI, A.. (2001). OHMIC ATTENUATION AND TEMPERATURE DISTRIBUTION IN INHOMOGENEOUS RAILGUN WITH 3-D FINITE ELEMENT METHOD. INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN), 12(3), 1-10. SID. https://sid.ir/paper/65861/en

Vancouver: Copy

KESHTKAR ASGHAR, SOLEYMANI MOHAMMAD, SHOULAEI A.. OHMIC ATTENUATION AND TEMPERATURE DISTRIBUTION IN INHOMOGENEOUS RAILGUN WITH 3-D FINITE ELEMENT METHOD. INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN)[Internet]. 2001;12(3):1-10. Available from: https://sid.ir/paper/65861/en

IEEE: Copy

ASGHAR KESHTKAR, MOHAMMAD SOLEYMANI, and A. SHOULAEI, “OHMIC ATTENUATION AND TEMPERATURE DISTRIBUTION IN INHOMOGENEOUS RAILGUN WITH 3-D FINITE ELEMENT METHOD,” INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN), vol. 12, no. 3, pp. 1–10, 2001, [Online]. Available: https://sid.ir/paper/65861/en

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