ANSYS varification manual 9

The mesh density selected for analysis along the axes

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Unformatted text preview: ohm/ft k = 13 Btu/hr-ft-°F h = 5 Btu/hr-ft2-°F ρ = 8.983782 x 10-8 ohm-ft Geometric Properties = 1 in = (1/12) ft ro = 0.375 in = 0.03125 ft Θ = 10° Loading I = 1000 A Ta = 70°F Analysis Assumptions and Modeling Notes A 1 inch axial (Z) length is chosen for convenience. Since the problem is axisymmetric, only a one-element sector is needed. A small angle Θ = 10° is used for approximating the circular boundary with a straight-sided element. ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–387 VM173 The calculated resistivity, rho = RA/I, in units of [ohms-ft] was converted to units of [(Btu/hr)/watt] using the conversion factor [3.415 (ohm-ft)] / [(Btu/hr)/watt]. With this conversion, the Joule heat units match the thermal units. The voltage drop per foot, IR/ , is calculated as 0.1 volt/ft. Nodes 1 though 16 are assumed to be ground nodes for reference. The steady-state convergence procedures are used. The heat dissipation rate, q, is calculated as q =...
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