## THERMAL SCIENCE

International Scientific Journal

### STOCHASTIC TECHNIQUE FOR SOLUTIONS OF NON-LINEAR FIN EQUATION ARISING IN THERMAL EQUILIBRIUM MODEL

**ABSTRACT**

In this study, a stochastic numerical technique is used to investigate the numerical solution of heat transfer temperature distribution system using feed forward artificial neural networks. Mathematical model of fin equation is formulated with the help of artificial neural networks. The effect of the heat on a rectangular fin with thermal conductivity and temperature dependent internal heat generation is calculated through neural networks optimization with optimizers like active set technique, interior point technique, pattern search, genetic algorithm and a hybrid approach of pattern search - interior point technique, genetic algorithm - active set technique, genetic algorithm - interior point technique, and genetic algorithm - sequential quadratic programming with different selections of weights. The governing fin equation is transformed into an equivalent non-linear second order ODE. For this transformed ODE model we have performed several simulations to provide the justification of better convergence of results. Moreover, the effectiveness of the designed models is validated through a complete statistical analysis. This study reveals the importance of rectangular fins during the heat transformation through the system.

**KEYWORDS**

PAPER SUBMITTED: 2018-02-21

PAPER REVISED: 2019-01-27

PAPER ACCEPTED: 2019-02-16

PUBLISHED ONLINE: 2019-03-09

**THERMAL SCIENCE** YEAR

**2020**, VOLUME

**24**, ISSUE

**5**, PAGES [3013 - 3022]

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