Hybrid Computation of Low-Frequency Field Penetration Through Open Ended Metallic Cylinders
Morgan, Michael A.
MetadataShow full item record
Computation of low-frequency field penetration through conducting and magnetic materials is important for accessing interference within devices and facilities. Another use is the prediction of naval vessel vulnerability to detection caused by the field signatures of their internal electrical machinery. A hybrid procedure is used for predicting the penetration of low-frequency fields through a cylindrical structure. The structure is assumed to be rotationally symmetric but otherwise can be inhomogeneous, including layers or rings of differing material. The internal source is an axially oriented multi-turn coil. Field computation is formulated using a finite element solution within the interior region coupled to a spheroidal field expansion in the unbounded exterior. Comparisons are made to field measurements for a coil inside a steel pipe at frequencies of 1Hz and 50Hz.
Showing items related by title, author, creator and subject.
Morgan, Michael A. (2005-01);Computation of low-frequency field penetration through magnetic and/or conducting materials is important for quantifying electromagnetic compatibility issues in devices and facilities, as well as prediction of field ...
Moton, Casey John (Monterey, California. Naval Postgraduate School, 1998);Recent advances in computational hydrodynamics offer the opportunity to incorporate more accurate analyses earlier in the ship design process. In particular, significant work has been conducted towards the prediction of ...
Wilson, David J. (Monterey, California. Naval Postgraduate School, 1991-03);This thesis examines the performance of SRI's Ambient Communications (AMBCOM) model for high latitude propagation prediction. It is one in a series of studies, conducted at the Naval Postgraduate School, to establish the ...