FINITE ELEMENT PREDICTION OF UNSTEADY HEAT TRANSFER IN HOLLOW BLOCKS

Assassa, Ghazy M. R.; Abdel-Hadi, Eed A.A.

doi:10.21608/amme.1986.58989

FINITE ELEMENT PREDICTION OF UNSTEADY HEAT TRANSFER IN HOLLOW BLOCKS

Document Type : Original Article

Authors

¹ Associate Professor., Dept. of Mech. Eng., Faculty of Engineering at Shoubra, Zagazig Univ., 108 Shoubra Street, Cairo, Egypt

² Assistant Professor., Dept. of Mech. Eng., Faculty of Engineering at Shoubra, Zagazig Univ., 108 Shoubra Street, Cairo, Egypt

10.21608/amme.1986.58989

Abstract

This paper presents a numerical method for describing the transient heat transfer through hollow cement blocks via the employment of finite element technique. The block under consideration is assumed to be of rectangular cross-section and composed of two parts, a solid inside which an enclosure (space) is located. The outer surface of the block is exposed to the solar flux. The temperature distribution inside the block as function of space coordinates and its variation with time are the unknown variables of the problem. This leads to a parial differenial equation in the temperature. Finite element technique is used to obtain the solution of the problem for different boundary conditions. The effect of the presence of the enclosure is investigated by comparing homogeneous and hollow blocks results.