Numerical investigation of single and multiple impinging synthetic jets on the flow field and heat transfer at low orifice-to-plate distances

In the present numerical study, thermal performance and fluid flow properties have been investigated to show effect of single-orifice multiple-orifice impingement synthetic jets for dimensionless orifice-toplate distance (H/D) lower than one. Investigations done an actuation frequency f=500 Hz, 0.10 ≤ H/D 0.75, pitch ratio 1.25 Do/D 1.75. The results were validated with experimental from literature, a fair agreement was obtained. showed that at low nozzle-to-plate spacing, target plate temperatures could be It observed use multiple orifices especially higher heat transfer values are present. study performed add knowledge electronics aviation industries where high in small cavities occur.