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ANSYS varification manual 9

Figure 1641 wooden slab problem sketch material

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Unformatted text preview: g: vm161.dat Test Case A pipe, covered with a layer of insulation, transports a fluid at a temperature Ti. For a given ambient air temperature To, determine the heat loss q across the outer surface per lineal foot of pipe. Figure 161.1 Insulated Pipe Problem Sketch Material Properties k1 = 25 Btu/hr-ft-°F k2 = 0.11 Btu/hr-ft-°F h1 = 40 Btu/hr-ft2-°F h2 = 4 Btu/hr-ft2-°F Geometric Properties r1 = 1.535 in = 0.1279166 ft r2 = 1.75 in = 0.1458333 ft r3 = 2.25 in = 0.1875 ft Loading Ti = 300°F To = 80°F = 1 ft Analysis Assumptions and Modeling Notes An arbitrary 30° sector, of unit length , is used for the axisymmetric model. ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–356 VM161 Results Comparison Target q, Btu/hr ANSYS Ratio 362.0 362.0 1.000 Calculated from the surface heat flow rate of 30.17 x 360°/30°. ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–357 VM162: Cooling of a Circular Fin of Rectangular Profile Overview Reference: P. J. Schneider, Conduction Heat Transf...
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