Abstract
Impinging jets are frequently adapted for cooling overheated parts. With the film cooling technique, this process improves thermal exchanges between walls and fluid. However if many works have concerned only the thermal aspect of this problem[1], its dynamic field has been rarely studied especially for multiple impingements. As the two phenomena cannot be totally dissociated, we have undertaken the aerodynamic and thermal study of jets impinging on a plane wall. Various techniques have been used as visualizations (spreading over method, LASER sheet visualizations), LDA measurements to propose a topology schema of the flow and infrared thermography.
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