NUMERICAL INVESTIGATION OF COOLING EFFECT OVER TWO-DIMENSIONAL AIRFOIL USING COLD AIR INJECTION TECHNIQUE

This numerical investigation delves into the cooling effects on a two-dimensional airfoil subjected to low Reynolds number conditions using computational fluid dynamics simulations. The study encompasses a comprehensive exploration of five distinct cold air injection scenarios aimed at augmenting airfoil performance. The cases under scrutiny encompass various injection methods and locations, each offering a unique perspective on the cooling phenomenon. In case 1, a stream of cold air is introduced parallel to the airflow direction over the upper surface of the airfoil at an inclination angle of 14°. Case 2 involves injecting cold air along the mid-surface of the airfoil, aligned with the incoming flow. Case 3 focuses on directing cold air parallel to the airflow direction onto the lower surface of the airfoil, inclined downward at a 14° angle. In case 4, cold air is injected perpendicular to the free stream flow, targeting the lower airfoil surface. Finally, case 5 explores the injection of cold air perpendicular to the free stream flow over the upper surface of the airfoil. Across all cases, the injected air maintains a uniform velocity of 3 m/s and a temperature of 27°C. The outcomes of this study yield crucial insights into the intricacies of low Reynolds number airfoil performance enhancement through strategic cooling. The findings presented herein serve as a valuable resource for the advancement of low Reynolds number airfoil technologies, with potential applications in diverse fields including aerospace, automotive, and renewable energy.