Capacitance and surface charge distribution computations for a satellite modeled as a rectangular cuboid and two plates

Alad, Rizwan; Chakrabarty, S. B.

doi:10.1016/j.elstat.2013.09.006

Cited by 10 publications

(8 citation statements)

References 11 publications

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“…In the case under examination, according to the (24), the final N is tested around 45 units. The comparison for capacitance of specimen (pF), obtained with different B/T functions and for increasing values of length/diameter ratio, have been compared with the analytical solution (Alad and Chakrabarty, 2013) and are reported in Table 1 for each procedure of resolution of the linear system. Table 1.…”

Section: Numerical Resultsmentioning

confidence: 99%

KRYLOVâS SUBSPACES ITERATIVE METHODS TO EVALUATE ELECTROSTATIC PARAMETERS

Versaci¹

2014

American Journal of Applied Sciences

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Most of the electromagnetic problems can be stated in terms of an inhomogeneous equation Af = g in which A is a differential, integral or integro-differential operator, g in the exitation source and f is the unknown function to be determined. Methods of Moments (MoM) is a procedure to solve the equation above and, by means of an appropriate choice of the Basis/Testing (B/T), the problem can be translated into an equivalent linear system even of bigger dimensions. In this work we investigate on how the performances of the major Krylov's subspace iterative solvers are affected by different choice of these sets of functions. More specifically, as a test case, we consider the algebric linear system of equations obtained by an electrostatic problem of evaluation of the capacitance and electrostatic charge distribution in a cylindrical conductor of finite length. Results are compared in terms of analytical/computational complexity and speed of convergence by exploiting three leading iterative methods (GMRES, CGS, BibGStab

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Section: Numerical Resultsmentioning

confidence: 99%

KRYLOVâS SUBSPACES ITERATIVE METHODS TO EVALUATE ELECTROSTATIC PARAMETERS

Versaci¹

2014

American Journal of Applied Sciences

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“…Calculating the capacitance of a simple system like a sphere is important in spacecraft design. Analytical expression for the sphere is denoted by the following equation [9].…”

Section: Expression Of Capacitancementioning

confidence: 99%

“…The Finite Element Method (FEM) is a simpler and easier method compared to other techniques. This method is suitable for solving differential equations and utilizes a more powerful and useful numerical technique for handling the electromagnetic analysis, including difficult geometries [7]- [9] and inhomogeneous media. However, an accurate understanding of the computed results [10]- [12] is essential.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Capacitance and Charge Distribution for Conducting Bodies by Circuit Modelling

Muneeswaran¹,

Dhanasekaran²

2016

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This paper presents a numerical analysis for computation of free space capacitance of different arbitrarily shaped conducting bodies based on the finite element method with triangular subsection modeling. Evaluation of capacitance of different arbitrary shapes is important for the electrostatic analysis. Capacitance computation is an important step in the prediction of electrostatic discharge which causes electromagnetic interference. We specifically illustrated capacitance computation of electrostatic models like unit cube, rectangular plate, triangular plate, T-shaped plate, sphere and two touching spheres. Numerical data on the capacitance of conducting objects are presented. The results are compared with other available results in the literature. We used the COMSOL Multiphysics software for the simulation. The models are designed in three-dimensional form using electrostatic environment and can be applied to any spacecraft circuit modeling design. The findings of this study show that the finite element method is a more accurate method and can be applied to any circuit modeling design.

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“…Details of absolute and coupled body capacitance formed in a spacecraft have not been revealed in any of these tools. In recent past, capacitance of several metallic structures of a spacecraft and entire spacecraft modeled as a rectangular cuboid and two plates with antennas have been computed in the previous studies . However, absolute capacitance of a metallic pyramid, a module required to build a spacecraft model, is not available in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…In recent past, capacitance of several metallic structures of a spacecraft and entire spacecraft modeled as a rectangular cuboid and two plates with antennas have been computed in the previous studies. [12][13][14][15][16][17] However, absolute capacitance of a metallic pyramid, a module required to build a spacecraft model, [7][8][9][10][11] is not available in the literature. Temporal variation of body potential of the spacecraft immersed in the single Maxwellian plasma parameters is presented without considering dominant currents because of SEY-BEY previously in other works.…”

Section: Introductionmentioning

confidence: 99%

Impact of secondary and backscattered electron currents on absolute charging of structures used in spacecraft

Pandya

Mehta

Kothari

2019

Int J Numerical Modelling

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This article analyzes absolute charging of a metallic pyramid in single Maxwellian normal and worst cases of plasma environment. Capacitance of a pyramid for estimation of body potential is computed by the Method of Moments. Body potential temporal variation is obtained by numerically integrating the differential equation using the fourth order Runge‐Kutta method. Owing to a well‐known fact that diverse secondary and backscattered electron yields for different materials is the prime reason for most destructive differential charging, this work includes impact of normal and isotropic incidence of particles for a metal surface of aluminum. The decisive inferences related to these properties together with temporal variation of body potential are compared. Our computational results reveal a significant difference in the estimation of absolute charging in comparison with the same reported earlier.

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Capacitance and surface charge distribution computations for a satellite modeled as a rectangular cuboid and two plates

Cited by 10 publications

References 11 publications

KRYLOVâS SUBSPACES ITERATIVE METHODS TO EVALUATE ELECTROSTATIC PARAMETERS

KRYLOVâS SUBSPACES ITERATIVE METHODS TO EVALUATE ELECTROSTATIC PARAMETERS

Evaluation of the Capacitance and Charge Distribution for Conducting Bodies by Circuit Modelling

Impact of secondary and backscattered electron currents on absolute charging of structures used in spacecraft

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Capacitance and surface charge distribution computations for a satellite modeled as a rectangular cuboid and two plates

Cited by 10 publications

References 11 publications

KRYLOVâS SUBSPACES ITERATIVE METHODS TO EVALUATE ELECTROSTATIC PARAMETERS

KRYLOVâS SUBSPACES ITERATIVE METHODS TO EVALUATE ELECTROSTATIC PARAMETERS

Evaluation of the Capacitance and Charge Distribution for Conducting Bodies by Circuit Modelling

Impact of secondary and backscattered electron currents on absolute charging of structures used in spacecraft

Contact Info

Product

Resources

About

KRYLOVâS SUBSPACES ITERATIVE METHODS TO EVALUATE ELECTROSTATIC PARAMETERS

KRYLOVâS SUBSPACES ITERATIVE METHODS TO EVALUATE ELECTROSTATIC PARAMETERS