Numerical analysis of nanojet impingement onto a heated moving body

Today, human needs are increasing rapidly due to the increase in the world population. Meeting the needs rapidly increases the consumption of energy, which constitutes a large part of our daily life. Despite the increasing needs and energy consumption, world resources are decreasing. At this point, depending on the needs and consumption, terms such as efficient, economical and time-efficient use of energy gain importance. In this study, cooling of a preheated or heat treated object, which is one of the processes commonly used in industrial applications, was investigated numerically with the help of jets. The study was modeled in commercial Computational Fluid Dynamics program and its results were examined. The study was carried out over three different Reynolds numbers. In addition, two different channel heights were investigated separately for each Reynolds number. In simulation, the hot body was moved perpendicular to the cold jet flow. The body's temperature changes and fluid behavior are investigated. Nanofluid with two different concentration ratios was used as fluid in the analysis. Reynolds number values 30, 60 and 120 have been examined situations. Thus, the effect of different Reynolds numbers, different height values and different fluid types on the cooling process was investigated. The results showed that in the case of using nanofluid with a 0.02 volumetric concentration ratio, the decrease in the temperature value of the simulated moving body increases with time. In addition, it has been determined that decreasing the channel height value causes the temperature difference between the body and the fluid to decrease over time.