Thermodynamics HW Solutions 291

Thermodynamics HW Solutions 291 - Chapter 4 Transient Heat...

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

View Full Document Right Arrow Icon
Chapter 4 Transient Heat Conduction 4-11C The lumped system analysis is more likely to be applicable to slender bodies than the well-rounded bodies since the characteristic length (ratio of volume to surface area) and thus the Biot number is much smaller for slender bodies. 4-12 Relations are to be obtained for the characteristic lengths of a large plane wall of thickness 2L, a very long cylinder of radius and a sphere of radius r r o o Analysis Relations for the characteristic lengths of a large plane wall of thickness 2L, a very long cylinder of radius and a sphere of radius are r o r o L V A LA A L L V A rh r L V A r r r cwa l l ccy l inder o o o c sphere o o o , , , / == =
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online