The length of the model is taken as 03 ft assuming

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Unformatted text preview: sis Type(s): Thermal Analysis (ANTYPE = 4) Element Type(s): 2-D 8-Node Thermal Solid Elements (PLANE77) Input Listing: vm112.dat Test Case See VM111 for test case description, geometric and material properties, and loading. Figure 112.1 Spherical Body Problem Sketch Analysis Assumptions and Modeling Notes Since the problem is axisymmetric, only a one-element sector is needed. A small angle Θ = 15° is used for approximating the circular boundary with a curved-side element. Nodal coupling is used to ensure circumferential symmetry. Automatic time stepping is used. The initial integration time step (6/40 = 0.15 hr) is based on ≈ δ2/4 α, where δ is the element characteristic length (0.0555 ft) and α is the thermal diffusivity (k/γc = 0.005 ft2/hr). POST1 is used to extract results from the solution phase. Results Comparison Time = 6 hr. Target[1] ANSYS Ratio T, °F 28.0 29.0 1.035 1. Based on graphical estimates. ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1...
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