Results from the Felix experiments on electromagnetic effects in hollow cylinders

The paper investigates the use of the A -\J/ finite-element formulation for the modelling of two-and three-dimensional transient eddycurrent problems. The method is initially verified against an analytic problem and compared with the standard A formulation. Various aspects of transient analysis are investigated; including different time-step procedures and the use of mass lumping to eliminate 'physically unreasonable' effects. Finally, predictions from a threedimensional simulation are shown to compare well with experimental results taken from the FELIX cylinder experiments.

show abstract

“…, AA oT*/| _ [7/1 oJLxJ L/J solving for x^ in terms of x A gives x >p = KM fij, ~ *V<A ^M X A (9) and then substituting for x^ in eqn. 8 gives…”

Section: The A-ip Methodsmentioning

confidence: 99%

“…The FELIX cylinder experiment [9] supplied a useful bench test for the verification of the computer program. This experiment consisted of a short conducting cylinder (see Fig.…”

Section: D Test Problemmentioning

confidence: 99%

Some aspects of two-and three-dimensional transient-eddy-current modelling using finite elements and single-step time-marching algorithms

Leonard

Rodger

1988

IEE Proc. A Phys. Sci. Meas. Instrum. Manage. Educ. Rev. UK

View full text Add to dashboard Cite

show abstract

“…A complete description of the problem can be found elsewhere [1,2]. Other general information relevant to this work can be found in [3,4].…”

Section: Problem Descriptionmentioning

confidence: 99%

Infinite Cylinder in a Uniform Sinusoidal Field (Comparison of Results, Problem 2)

Ida

1988

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

View full text Add to dashboard Cite

If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation.ABSTRACT: Problem 2 of the International Workshop for Eddy Current Code Comparison is a hollow cylinder with its axis perpendicular to a uniform sinuosoidal field. A total of 10 solutions, employing 9 different computer codes, are described and compared with analytic results. Most codes were 2-D finite element and were found to give satisfactory solutions.

show abstract

“…We apply the me"hod to the FELIX cylinder discussed in [6,7] and adopted as a 3-D test problem for the international eddy current workshops [12]. Figure 1 depicts the geometry of the problem.…”

Section: Basis Functions Amd the Hull Fibld Integral Techniquementioning

confidence: 99%

“…A general theory involving the use of null field integral equations determining 3-D eigenvalues is developed. The theory is applied to the cylinder experiments performed with the FELIX (Fusion ELectromagnetic Induction experiments) facility at Argonne National Laboratory (ANL) [5][6][7].…”

mentioning

confidence: 99%

3-D transient eddy current calculations for the FELIX cylinder experiments

Davey¹,

Turner²

1986

View full text Add to dashboard Cite

The three-dimensional eddy current transient field problem is formulated first using the U-V method. This method breaks the vector Helmholtz equation into two scalar Helmholtz equations. Null field integral equations and the appropriate boundary conditions are used to set up an identification matrix which is independent of null fi<*ld point locations. Embedded in the identification matrix are the unknown eigenvalues of the problem representing its impulse response in time. These eigenvalues are found by equating the determinant of the identification matrix to sero. When this initial forcing function is Fourier decomposed into its spatial harmonica, each Fourier component can be associated with a unique eigenvalue by this technique. The true transient solution comes through a convolution of the impulse response so obtained with the particular external field decay governing the problem at hand. The technique is applied to the FELIX cylinder experiments; computed results are compared to data. A pseudoanalytic confirmation of the eigenvalues so obtained is formulated to validate the procedure.

show abstract

Results from the Felix experiments on electromagnetic effects in hollow cylinders

Abstract: The early experiments with the FELIX (£uslon Electromagnetic ^Induction experiments) facil-Lty have been devoted to obtaining data which can be used tu validate eddy current computer codes.This paper describes experiments on field variation In3lde conducting cylinders.

Cited by 19 publications

References 1 publication

Some aspects of two-and three-dimensional transient-eddy-current modelling using finite elements and single-step time-marching algorithms

Some aspects of two-and three-dimensional transient-eddy-current modelling using finite elements and single-step time-marching algorithms

Infinite Cylinder in a Uniform Sinusoidal Field (Comparison of Results, Problem 2)

3-D transient eddy current calculations for the FELIX cylinder experiments

Contact Info

Product

Resources

About