The water and air flow and Micro-bubble production inside the venturi tube is studied by dimensional analysis. Up to now, Micro-bubble creation has been studied experimentally and no numerical analysis has been presented. Numerical analysis of Micro-bubble creation in venturi tube requires fast computers and large amounts of storage space. To save time and storage space, dimensional analysis has been used. In this research, OpenFOAM and SPSS were used for numerical and statistical analysis, respectively. This study shows that the scalable model can be quite reliable for studying the pressure and velocity in the venturi tube. However, scaled models cannot be used to study alpha. Since the purpose of this research is to study Micro-bubble formation in a Venturi tube and alpha, the scalable models cannot be used. Therefore, we need to simulate actual models in OpenFOAM software and study the formation of Micro-bubbles, which is time-consuming and costly.