FEATool
v1.7 Finite Element Analysis Toolbox |

ex_heattransfer1.m File Reference

EX_HEATTRANSFER1 2D ceramic strip with radiation and convection.

[ FEA, OUT ] = EX_HEATTRANSFER1( VARARGIN ) 2D heat transfer of a ceramic strip with both radiation and convection on the top boundary.

_ q = h*(T_inf-T) + epsilon*sigma*(T_inf^4-T^4) ^ +------------------+ | | | | | | 0.01m T=900C | | T=900C | | | | | | v +------------------+ dt/dn = 0 |<---- 0.02m ----->|

The ceramic has a thermal conductivity of 50 W/mC and the sides are fixed at a temperature of 900C while the bottom boundary is insulated. The surrounding temperature is 50C. The top boundary is exposed to both natural convection (with a film coefficient h=50W/m^2K) and radiation (with emissivity epsilon=0.7 and the Stefan-Boltzmann 5.669e-8 W/m^2K^4). The solution is sought at three points along the vertical symmetry line.

- Reference
[1] Holman, J. P., Heat Transfer, Fifth Edition, New York: McGraw-Hill, 1981, page 96, Example 3-8.

Accepts the following property/value pairs.

Input Value/{Default} Description ----------------------------------------------------------------------------------- hmax scalar {0.001} Grid cell size igrid scalar {0}/1/2 Cell type (0=quadrilaterals, 1=triangles, sfun string {sflag1} Finite element shape function iplot scalar {1}/0 Plot solution (=1) . Output Value/(Size) Description ----------------------------------------------------------------------------------- fea struct Problem definition struct out struct Output stuct

- Generated fields of fea:

- Generated fields of out: