Author
Ikhlaq, M., Yasir, M., Ghaffari, O., Arık, Mehmet
Publication Date
2022-09-19
Publication Place
-
Taylor & Francis
Subject
Acoustic measurements, Heat transfer, Microelectronic cooling, Piezoelectric actuators, Sound level, Synthetic jets
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
0891-6152
Record ID
50ddabfb-b6b8-4c27-b408-75d50411bbdb
Library Location
Mechanical Engineering
Date
2022-09-19
Notes
TÜBİTAK ; EVATEG center ; Arçelik Corporation
Sample Text
Growth in computational capacity combined with a decrease in the size of digital devices has led to increasing demand for more active and efficient cooling of electronics. In this study, an experimental investigation into two different sizes of central orifice Synthetic Jet Actuators (SJAs) is conducted to evaluate their heat transfer as well as noise generation characteristics. Two SJAs (40 mm and 20 mm) are examined, covering a distinct span of frequencies ranging from low to medium (<5500 Hz) in regards to the effect of SJA size over performance. The SJAs’ disk deflection, structural frequency, and jet exit velocity were measured to fully characterize the jet performance. The maximum Nusselt number for the largest SJA was 3 times more than the smallest SJA, where the evaluation of stroke length suggests no effective synthetic jet formation for the smallest SJA. The noise from the SJAs was measured in an anechoic chamber using three microphones, Fast Fourier Transform (FFT) of the sound pressure levels provide contributions to different tones in the resulting noise. 1/3 Octave Constant Percentage Bandwidth (CPB) analysis was performed to identify the frequency bands making the largest contribution to the noise. The largest SJA showed the highest heat transfer at acceptable noise levels during the operation below resonance frequency.
DOI
10.1080/08916152.2021.1946211
Cilt
35
