Last edited by Fenrikinos

Friday, May 1, 2020 | History

2 edition of **boundary element method for eddy current problems having rotational symmetry.** found in the catalog.

boundary element method for eddy current problems having rotational symmetry.

Mahmoud Ramadan Ahmed

- 247 Want to read
- 40 Currently reading

Published
**1987** .

Written in English

The Physical Object | |
---|---|

Pagination | 186 leaves |

Number of Pages | 186 |

ID Numbers | |

Open Library | OL18101158M |

Let r be the position vector of the point P from the current element dl (The current element dl is a vector which is tangent to the element and is in the direction of current flow in the conductor. Book The Finite Element Method in Heat Transfer and Fluid Dynamics, J. N. Reddy, and D. K. Gartling [], CRC Press, New York, ISBN X. Book The Finite Element Method, Volume 1 Basic Formulation and Linear Problems, Zienkiewicz O C, Taylor R L, 4th Edition, Published by McGraw-Hill, ISBN , Book The Finite Element.

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Ali, K.F., Boundary Element Analysis of Single Layer and Multi Layer Induction Devices with Rotational Symmetry, Ph.D. Diss A Boundary Element Method for Eddy Current Problems Having Rotational Symmetry, Ph.D. Diss., University of Toronto I.D., “3-D Eddy Current Problems and the Boundary Element Method”, Proc.

IMACS Int. Symp Cited by: Boundary element method for 3D conductive thin layer in eddy current problems Article (PDF Available) in COMPEL International Journal of Computations and Mathematics in Electrical 38(3) The iterative hybrid finite element-boundary element method is applied for the analysis of induction heating systems with rotational symmetry in unbounded free space.

Ramadan Ahmed, A Boundary Element Method for Eddy Current Problems Having Rotational Symmetry, Ph.D. Dissertation, University of Toronto, Toronto, Canada (). Google Scholar 23Cited by: The Finite Element Method in Engineering, Fifth Edition Singiresu S. Rao With the revolution in readily available computing power, the finite element method has become one of the most important tools for the modern engineer.

THE FINITE ELEMENT METHOD IN MAGNETICS In the case of static magnetic field problems and in eddy current field problems the open boundary is usually modeled by a sphere with a radius r → ∞. The energy crossing the area of this boundary is equal to zero, because the variation of energy of electric and magnetic field is taking place.

ANSYS Maxwell Field Simulator v15 – Training Seminar P Overview Presentation 1 Maxwell v15 Maxwell 3D is a high-performance interactive software package that uses finite element analysis (FEA) to solve electric.

A computer program based on the Boundary Element Method (BEM) formulation is applied to several two-dimensional and axisymmetric practical contact problems. Modern Practice in Stress and Vibration Analysis documents the proceedings of the conference on Modern Practice in Stress and Vibration Analysis organized by the Stress Analysis Group.

The Proceedings: Fifth International Conference on Numerical Ship Hydrodynamics () Chapter: On the Numerical Solution of the Turbulent Flow-Field past Double Ship Hulls at Low and High Reynolds Numbers. AbstractIn this sequel, the numerical solution of nonlinear two-point boundary value problems (NTBVPs) for ordinary differential equations (ODEs) is found by Bezier curve method (BCM) and orthonormal Bernstein polynomials (OBPs).

OBPs will be constructed by Gram-Schmidt technique. Stated methods are more easier and applicable for linear and nonlinear : Fateme Ghomanjani, Stanford Shateyi. Summary. We present an application of the spectral-element method to model axisymmetric flows in rapidly rotating domains.

The primitive equations are discretized in space with local tensorized bases of high-order polynomials and in time with a second-order accurate scheme that treats viscous and rotational effects by: The resulting elliptic boundary value problems are solved numerically by using both the extended-domain-eigenfunction method (EDEM) and the well-known boundary element method (BEM).

The extended-domain-eigenfunction method aims to reformulate the original problem on an extended domain which possesses symmetry. Fundamentals of the method as well as new advances in the field are described in rs 1 to 4 present general 2D and 3D static and dynamic formulations by the use of scalar and vector unknowns and adapted interpolations for the fields (nodal, edge, face or volume).Chapter 5 is dedicated to the presentation of different macroscopic.

The finite element method, which is a numerical analysis method, is time consuming, in particular for 3D problems and especially at first design stages. This is why the MEC method, which is a semi-analytical method, is also used.

The MEC method presents a good compromise between accuracy and computation time. However, the MEC method is not as Cited by: 2. To reduce the computation time, a composite mesh scheme is introduced into such eddy current problems. The results obtained in the verification show usefulness of this method in eddy current problems consisting several moving conductors.

Show more. DOI: /JAE Abstract: A semi-analytical method for modelling electromagnetic fields is applied to eddy current nondestructive evaluation (NDE) to simulate the end effect in tube testing with bobbin coils.

The boundary value problem is formulated in terms of the magnetic vector potential and is solved using orthogonal eigenfunctions, the eigenvalues of. Chapter 5 Boundary Element Method (BEM) The boundary element method (BEM), also known as the method of moments (MoM), approaches the eddy current problem by solving the underlying boundary integral equations (BIE), based on quasi-variational principles, for the equivalent sources, i.e., for the equivalent electric and magnetic current density.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. In this work we study the numerical simulation of particle-laden fluids, with an emphasis on Newtonian fluids and spherical, rigid particles.

Our general strategy consists in using the discrete element method (DEM) to model the particles and the finite element method (FEM) to discretize the continuous phase, such that the fluid is not resolved around the particles, but rather Cited by: 1.

Many practical current distributions are, or can be approximated by, connected straight-line current segments, or current "sticks." We will now use the Biot-Savart law to find the field at an arbitrary observer position r associated with a current stick having an arbitrary location.

The result is a practical resource, because a numerical. Unfortunately, this book can't be printed from the OpenBook. Visit to get more information about this book, to buy it in print, or to download it as a free PDF. /ot ot Other Titles in Applied Mathematics Society for Industrial and Applied Mathematics OT43 / Templates for the Solution of Linear Systems: Building Blocks for Iterative Methods Templates for the Solution of Linear Systems: Building Blocks for Iterative Methods Richard Barrett, Michael Berry, Tony F.

Chan, James Demmel, June Donato, Jack. Homopolar Permanent-Magnet-Biased Actuators and Their Application in Rotational Active Magnetic Bearing Systems. In addition, eddy current would introduce a phase lag between the control current and the control magnetic flux, and, consequently, between the control current and the force produced by the actuator.

Finite Element Method Cited by: boundary diffuse conduction wavelength radiation heat emission radiation heat transfer thermal radiation heat directional configuration convection finite temperatures specular You can write a book review and share your experiences.

Other readers will always be interested. In this paper, we proposed an alternate fast algorithm for solving large problems using Boundary Element Method (BEM). It utilized two important features, namely the multipole expansion, and potential evaluation by discrete convolutions, via Fast Fourier Transform (FFT).

We refer to it as the Fast Fourier Transform on Multipole (FFTM) method. Burczynski.T.: Boundary element method for deterministic and stochastic shape design sensitivity analysis.

In: Advanced Boundary Element Methods (Ed. ), pp, Springer-Verlag 8. Burczynski T.: The Boundary Element Method for Selected Analysis and Optimization Problems of Deformable Bodies. The results from the current method are compared with previous experimental and numerical results and good agreement is achieved.

BibTeX: @article{wangstrongly, author = {Wang, C. and Eldredge, J. D.}, title = {Strongly coupled dynamics of fluids and rigid-body systems with the immersed boundary projection method}, journal = {J.

Comput. AbstractThis paper presents a design optimization of an axial-flux eddy-current magnetic coupling.

The design procedure is based on a torque formula derived from a 3D analytical model and a population algorithm method. The main objective of this paper is to determine the best design in terms of magnets volume in order to transmit a torque between Author: Julien Fontchastagner, Thierry Lubin, Smaïl Mezani, Noureddine Takorabet.

Our starting point is the augmented Lagrangian framework for FSI introduced by Bazilevs et al. [].We consider (Ω 1) t and (Ω 2) t to be regions (subsets of ℝ d, d ∈ {2, 3}) occupied by an incompressible fluid and an elastic solid, respectively, at time t, with (Γ 1) t and (Γ 2) t to be their corresponding boundaries.

These regions meet at a shared interface, (Γ I) by: You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read.

Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Modelling and Computation in Engineering is a collection of 37 contributions, which cover the state-of-the-art on a broad range of topics, including: Tunnelling - Seismic reduction technologies - Wind-induced vibration control - Asphalt-rubber concrete - Open boundary field problems - Road structures - Bridge structures - Earthquake.

Mathematics of Computation Vol NumberJanuary, Huo-Yuan Duan and Guo-Ping Liang Nonconforming elements in least-squares mixed finite element methods Jianguo Huang Numerical solution of the elastic body-plate problem by nonoverlapping domain decomposition type techniques.

() Fourier series-based discrete element method for computational mechanics of irregular-shaped particles. Computer Methods in Applied Mechanics and Engineering() Development and evaluation of an autonomous camera Cited by: A magnetic field is a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials.

A charge that is moving parallel to a current of other charges experiences a force perpendicular to its own velocity. The effects of magnetic fields are commonly seen in permanent magnets, which pull on magnetic materials (such as iron) and.

Full text of " More Puzzling Physics 1" See other formats. 6 Finite Element Analysis – Applications in Mechanical Engineering where is the fluid viscosity, Kij is the permeability tensor of the preform, and P is the fluid pressure.

Assuming that the resin is incompressible and substituting (4) into (2) gives the governing differential equation of the flow:. by Zhao and Faltinsen ().

They use a hybrid method, where close to the body a boundary element method with Rankine-sources is applied. This region is matched to an outer regime where a multipole expansion is used. Finally, we mention the approach of Wu and Eatock Taylor (), wherein the velocity potential is developed in a series.

The conventional boundary element method; numerical implementations for potential and elasticity problems of finite and open domains; integration and linear-algebra issues. The hybrid boundary element method: The Hellinger-Reissner potential, mixed and hybrid virtual-work concepts; integration and linear-algebra issues; simplified versions of.

INTERNOISE Melbourne Convention and Exhibition Centre, Melbourne Australia, November Investigations of eddy current vibration damping; The radiated sound power is subsequently obtained using the boundary element method. In the final approach, a fully-coupled finite element/boundary element model of the.

Maxwell's equations are a set of coupled partial differential equations that, together with the Lorentz force law, form the foundation of classical electromagnetism, classical optics, and electric equations provide a mathematical model for electric, optical, and radio technologies, such as power generation, electric motors, wireless communication, lenses, radar etc.

The radiated sound power is subsequently obtained using the boundary element method. In the final approach, a fully-coupled finite element/boundary element model of the fluid-loaded cylinder is developed.

Results for the radiated sound power from the various analytical, hybrid analytical/numerical and fully coupled numerical approaches are.The book contains about problems with hints for solving the most complicated ones.

For students' convenience each chapter opens with a time-saving summary of .Only numerical method (boundary element method (BEM) or finite element method (FEM)) based packages (e.g.

PZFlex) are in principle capable of modeling ultrasonic fields in such structures. At high frequencies FEM and BEM based packages require huge amount of computation memory and time for their executions that DPSM technique can avoid.