Calculations: During calculations, used symbols are as follows: n: number of particle X: fraction of each component in mixture µ: true average number fraction of tracer particles Is: mixing index P: power E: energy For bulgur: For semolina: = 1,11 g/ml , D= 1,2 mm , V= 0,904 mm3 = 1,24 g/ml , D= 0,4 mm , V= 0,0335 mm3