In this work, the one-dimensional finite element solution of the transient heat equation was used to calculate the temperature distribution through the soil in the arid region. As an example, Baghdad city was chosen due to the dryness of its weather which can be regarded as an arid region. The solar radiation, ambient temperature, relative humidity, soil thermal properties, soil water content, and wind speed were used as input parameters to the solution to obtain the surface and in-depth temperature distribution in the soil. The solar light components that hit the soil have been obtained theoretically and measured experimentally with good nearby results. The obtained temperature distributions were compared with experimental data and good nearby results could verify the used methodology.

This work focuses on the finite element method (FEM) that has been used to study the effect of cooling on damage initialization in skin subjected to CO2 laser. The bio-heat equation was used to simulate the temperature distribution in a skin. The result of this work was compared with the analytical solution of the same problem with good nearby results. From the result of this work, it was observed that increasing the convection heat transfer coefficient of the skin could increase the possible time required to cause damage during subjected the tissue to the laser. Also, it was found that the decrease in the environmental temp. can cause the same effect on the initialization of damage. This observation is very useful in treating skin through various laser medical procedures to avoid thermal damage.