S10  Fluidodinâmica de Escoamento Multifásico    Titulo: OPTIMIZATION OF A CAPACITANCE SENSOR THROUGH NUMERICAL SIMULATION FOR USE IN INDUSTRIAL PROCESS TOMOGRAPHY   Resumo : THIS WORK AIMS AT DESCRIBING CAPACITANCE VARIATION, THROUGH A NUMERICAL SIMULATION PROCESS, BY RANGING THE MAIN PARAMETERS OF A SENSOR WITH EIGHT ELECTRODES PLACED OUTSIDE THE TUBE, THAT IS, IN A NON INVASIVE AND NON INTRUSIVE POSITION. IN THE SIMULATION PROCESS, THE FOLLOWING PARAMETERS WERE VARIED: THICKNESS OF THE TUBE WALL, RELATIVE PERMITTIVITY OF THE TUBE COMPONENT MATERIAL, DISTANCE BETWEEN THE TUBE EXTERNAL WALL AND THE SCREEN. ALL THE NUMERICAL SIMULATIONS WERE ACCOMPLISHED BY SUPPOSING THE TUBE FULL OF AIR AND FULL OF WATER AND USING DIFFERENT TYPES OF GRIDS. WE ALSO ANALYSED SITUATIONS WITH THE ELECTRODES EARTHED, FLOATING, POSITIONED ON THE INTERIOR AND EXTERIOR SURFACE OF THE TUBE. THROUGH AN ANALYSIS OF THE EXTREME CAPACITANCE VALUES IT WAS POSSIBLE TO CHOOSE THE BEST PARAMETERS FOR THE CONSTRUCTION OF A SENSOR TO BE USED IN INDUSTRIAL PROCESS TOMOGHAPHY.     Autores : de Azevedo Filho, Azamor Cirne de Moura, Luis Felipe M. Tambellini , Flávio 0     Trabalho Completo :   COBEM99 | Comissão  Organizadora | Palestras | Sessões Técnicas | Autor | Simpósios e Sessões Especiais | Revisores |  Título  dos  Trabalhos | Local