Nowadays, product manufacturing faces a new challenge where loss of time and costs are unsustainable. Any competitive industrial sector must use scientific knowledge and cutting-edge technologies to obtain the best results and products in a short time. However, many industries, that apply complex technological processes, still use trial and error techniques for product manufacturing optimization. To contribute for the development of the industrial sector and to overcome the lack between science and industry, this research focus on a widely implemented process, the multiple jet impingement. This is a complex convective heat transfer process, applied in several applications such as, cooling of electronic components, propulsion and power-generation engines, heat treatment, among others. The main advantage of this convective process is related to the high average heat transfer coefficient over the target surface. However, the performance of the heat transfer through multiple jets is governed by several process variables, from jets interactions to fluid flow parameters and geometry of the target surface. Due to the complexity of the interaction between jets, it is crucial to perform an in-depth study to understand the influence of these parameters on the heat transfer over the target plate, ensuring the higher efficiency of the process. To conduct this research, an experimental study is performed in a proposed-build setup. Using a flexible apparatus, the fluid flow characterization of isothermal multiple jets impinging a flat plate will be performed and compared with a single jet, using the Particle Image Velocimetry technique to measure the velocity field of the flow. This work focus on the influence of the nozzle-to-plate distance on both multiple and single jet flow, in order to analyse the jets interactions and to determine their advantages for the optimization of the heat transfer over the target plate.