Kreith principles of heat transfer 2nd printing

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Thermal Analysis (ANTYPE = 4) Element Type(s): 3-D Conduction Bar Elements (LINK33) Input Listing: vm114.dat Test Case A semi-infinite solid, initially at a temperature To, is subjected to a linearly rising surface temperature Ts = 3600 t, where Ts is in °F and t is time in hours. Determine the temperature distribution in the solid at t = 2 min. Figure 114.1 Linearly-rising Surface Temperature Problem Sketch Material Properties k = 10 Btu/hr-ft-°F γ = 500 lb/ft3 c = 0.2 Btu/lb-°F Loading To = 0°F @ t = 0 Ts = 120°F @ t = 2 (ramped) (see Figure 114.2: “Temperature vs. Time Plot”) Analysis Assumptions and Modeling Notes A nonuniform mesh is used to model the nonlinear thermal gradient through the solid. An arbitrary area of 1 ft2 is used for the elements. The length of the model is taken as 0.3 ft assuming that no significant temperature change occurs at the interior end point (Node 2) during the time period of interest (2 min). This assumption is validated by the temperature of node 2 at the end of the transient analysis. Automatic time stepping is...
View Full Document

This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.

Ask a homework question - tutors are online