Investigation of the Effect of Jet Angle and Velocity Parameters on Cooling of a Flat Plate with Crossflow

Heat dissipation from hot surfaces is one of the most important and ongoing issues in the scientific and industrial communities, which is always the subject of research and investigation. Heat dissipation from electronic components, turbine blades, and air curtains used in heating, ventilation, and air conditioning (HVAC) systems. One of the proposed solutions for cooling surfaces, which is also used in industry, is the use of jets. Jets have found various applications in different industries due to their advantages such as high heat transfer rate, localized and instantaneous cooling. In the jet method, the fluid is sprayed onto the desired surface to facilitate heat transfer. The efficiency and optimal performance of this mechanism are influenced by various parameters. Cooling surfaces using jets has been studied from several perspectives. in this study, the numerical effect of various parameters such as the dimensionless distance of the jet from the flat plate, the Reynolds number of the jet, and the Reynolds number of the cross-flow was investigated in the cooling of a flat plate using a flat jet with cross-flow. The Fluent software was used to achieve this goal. As the Vj/Vc ratio was increased, it was found that an angle of ۷۵ degrees and a H/W ratio of ۶ provided the best cooling performance. A ۷۵-degree angle provides the best heat transfer performance to the flat plate because the focus and direct impact of the beam increases the heat transfer rate. At other angles, the influence of the cross-flow increases, resulting in dispersion and a reduction in jet performance.

کلیدواژه ها:

Flat jet ، Flat plate ، Transverse flow ، Numerical analysis ، Heat transfer