Designing an experiment to study a multiple jet impingement system

What is it about?

Jet impingement is widely implemented in a variety of engineering applications and industrial processes where high average heat transfer coefficients and the uniformity of the heat transfer over the impinging surface are required to enhance the process and to avoid local hot (or cold) spots. Multiple jet impingement involves several parameters that interfere with the performance of the process, and there are no universal optimal solutions. To ensure the optimization of the process, it is important to understand the influence of these parameters in the heat transfer over the target surface. To perform this study an experimental research will be performed on a purpose-built test facility which has been commissioned, using a Particle Image Velocimetry system. However, to reduce time and costs associated to the experimental tests, it is important to perform a Design of Experiments, that allows to reduce the number of trials, focusing on the parameters that have a greater influence on the process performance. Taguchi’s method allows the optimization of the process through the selection of the most suitable parameters values.

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Why is it important?

Multiple jet impingement system depends on many variables. There is not a universal solution to determine the optimal value to maximize heat transfer. Instead of studying all possible combinations of variables and its values (typically result in a very big number of experiments), we use the Taguchi method that reduces the number of experiments.

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