{"title":"From Experiments to Numerical Modeling: A Tool for Teaching Heat Transfer in Mechanical Engineering","authors":"D. Zabala, Y. C\u00e1rdenas, G. N\u00fa\u00f1ez","country":null,"institution":"","volume":71,"journal":"International Journal of Mechanical and Mechatronics Engineering","pagesStart":2306,"pagesEnd":2310,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/1928","abstract":"In this work the numerical simulation of transient heat\r\ntransfer in a cylindrical probe is done. An experiment was conducted\r\nintroducing a steel cylinder in a heating chamber and registering its\r\nsurface temperature along the time during one hour. In parallel, a\r\nmathematical model was solved for one dimension transient heat\r\ntransfer in cylindrical coordinates, considering the boundary\r\nconditions of the test. The model was solved using finite difference\r\nmethod, because the thermal conductivity in the cylindrical steel bar\r\nand the convection heat transfer coefficient used in the model are\r\nconsidered temperature dependant functions, and both conditions\r\nprevent the use of the analytical solution. The comparison between\r\ntheoretical and experimental results showed the average deviation is\r\nbelow 2%. It was concluded that numerical methods are useful in\r\norder to solve engineering complex problems. For constant k and h,\r\nthe experimental methodology used here can be used as a tool for\r\nteaching heat transfer in mechanical engineering, using mathematical\r\nsimplified models with analytical solutions.","references":null,"publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 71, 2012"}