This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: ME 114 Exam 1 Fall 2003 Name _________________________________________________________________ You may use the following items only: • Calculator • Your heat transfer textbook • 1/2 page of notes, one side only (8 1/2”x11” page) You may not use your homework solutions or your notes. Make sure that you work on all of the problems. If you’re running short on time, at least write down some basic equations for the three calculation problems. Please note that the exam is printed on both sides of the paper!! 1. (4) Shown below is the 3-D transient heat conduction equation in spherical coordinates. 2 2 2 2 2 1 1 1 sin sin sin T T T T kr k k g C r r r r r t θ ρ θ φ φ θ θ θ L ⊗ 29≈♠ + + + = L ⊗ 29≈♠ & a) Cross out the term(s) that go away if heat transfer is steady. b) Underline the term(s) that go away if there is no internal heat generation. c) Circle the term(s) that go away if temperature is a function only of r. 2. (4) You are applying the heat conduction equation to a certain geometry. Heat transfer through one surface of the geometry is negligible. What boundary condition can you apply on that surface? Your answer should be a short geometry is negligible....
View Full Document
This note was uploaded on 09/08/2010 for the course ME 114 at San Jose State.
- Heat Transfer