Abstract

The present work studies the heat transfer and fluid flow in a falling film of vertical tube evaporators numerically. A finite difference technique, with iterative method, has been applied in these solutions, The flow is considered turbulent, cylindrical coordinates, and steady. Momentum, and energy equations are formulated in finite difference technique and computations are performed, utilizing Gauss-Seidal point iterative method to obtain an acceptable accuracy. Velocity developed and temperature distributions in a falling film have been obtained, and the heat transfer coefficient is calculated. The results have been compared with those obtained by others and a good agreement hag been found.

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