D. Zabala and Y. Cárdenas and G. Núñez
From Experiments to Numerical Modeling A Tool for Teaching Heat Transfer in Mechanical Engineering
2306 - 2309
2012
6
11
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/1928
https://publications.waset.org/vol/71
World Academy of Science, Engineering and Technology
In this work the numerical simulation of transient heat
transfer in a cylindrical probe is done. An experiment was conducted
introducing a steel cylinder in a heating chamber and registering its
surface temperature along the time during one hour. In parallel, a
mathematical model was solved for one dimension transient heat
transfer in cylindrical coordinates, considering the boundary
conditions of the test. The model was solved using finite difference
method, because the thermal conductivity in the cylindrical steel bar
and the convection heat transfer coefficient used in the model are
considered temperature dependant functions, and both conditions
prevent the use of the analytical solution. The comparison between
theoretical and experimental results showed the average deviation is
below 2. It was concluded that numerical methods are useful in
order to solve engineering complex problems. For constant k and h,
the experimental methodology used here can be used as a tool for
teaching heat transfer in mechanical engineering, using mathematical
simplified models with analytical solutions.
Open Science Index 71, 2012