Abstarct: This thesis examines the feasibility of the use of nano-micro air bubbles (MNB) for visulyzing the standard hydrodynamic patterns. Image processing techniques was employed to analyze the flow pattern and quantify the movement of the air bubbles. The structure of the MNB generators was studied and the hydrodynamics of generating MNB using cavitation technique was described. The particle size was determined using dynamic light scattering by Nano Particle Size Analyzer while the stability of the bubbles during a month was investigated through Zeta-Potential meter. Polydispersity Index of 0.483 was obtained for the bubble diameter which is in the range acceptable by ISO 22412-2008, up to 0.7. Physico-chemical properties of the nono-fluid including turbidity, DO, conductivity, turbidity, DO, conductivity, pH, and temperature were determined which indicated that by increasing the number of cycles the fluid passes through MNB generator, the turbidity and DO initially increases, following by a declining pattern after reaching the over-saturation state. By identifying the MNB properties, the physical models for the test were constructed. The flow was pictured by two methods: using a high quality 3CCD system with Micro Lens and a CCD camera and optical polarizing microscope, depending on the size of the sample. The captured movies were filtered in Edius software in order to have a better resolution for digital image processing. The filtered films were then transferred to MatLab to be analyzed by a code specifically written for this research. The code is able to analyze the movement of MNBs in separated frxames. According to the results, although micro bubbles have almost identical velocity with the flow, nano bubbls are not useful due to the Brownian motion.