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It is complex to amplify the significance of flow visualization. This is factual whether the methodology is strictly theoretical, primarily experimental, primarily computational or some combination as is always the most effective. The ability to see flow patterns on and around the device under investigation often gives insight into a solution to an aerodynamic problem. The reasonable mental image of a flow about a body is almost necessary for a researcher to have a useful understanding of an aerodynamic or hydrodynamic problem. We researcher and aerodynamicist believe possibilities of some significant difference in results obtained by computation and mental image and the experimental evidences resolve the uncertainty. In our research primitive variables that describe the flow and qualities are found to be use full in flow visualization phenomena. We resolve this with the concept of path line, stream line, streak line and time line approaches. A selective off road vehicle scaled model is tested by considering all the parameters. A low speed wind tunnel test facility with a calibrated test section size of 200 X200mm, low flow angularity providing acceptable laminar level and smoke tunnel facility is used for experimentations. The scale downed model is rationed with an allowable blockage factor not more than 10% is tested to a velocity range of 10m/s–50 m/s. Entire study and experiments on this Off-Road vehicle aerodynamics bounces adequate results. This experimental results and solutions will be useful for future young researchers in the field of off road vehicle design Aerodynamic analysis, more over this results gave a conceptual study for the person who drives the vehicle about the maximum occurrences, maximum possible drag and side slips over the vehicle.

Aerodynamics and flow pattern performance evaluation of off road vehicle for various velocity range and angle of incidence