Measuring Thickness
The shapes and thicknesses varied in different SCs. In general, the SC shape is known as an oval, but the shape still varies, as shown in Fig. 1. The thickness of half the body wall of a sample was measured and plotted along the axis (Fig. 1). The sample thickness has an important role in developing the drying model, especially in estimating the moisture diffusivity. In the present study, the SC thickness every 0.5 cm along the axis was measured, and the mean SC thickness was calculated using Eq. (1) as follows: