AN ERROR INDICATOR FOR THE CALCULATION OF GLOBAL QUANTITIES BY THE P-ADAPTIVE FINITE-ELEMENT METHOD

While general error indicators based on assessment of the quality of t he field have been successfully used in adaptive finite element method s, here an error indicator that chooses elements based on their contri bution to a specified global quantity is presented. This Targeted Erro r Indicator (TEI) can be applied to single or multiple solution proble ms. The inductance of a coil wrapped around a C shaped core and the in put impedance to two coupled coils serve as examples of global quantit ies for single and multiple solution cases. When compared to a general error indicator, the TEI leads to more accurate and more rapidly conv erging global values.