TY - JOUR
T1 - The effect of frequency excitation and cavity shape changes on the vortex ring formation of a synthetic jet actuator
AU - Larasati, Dewi
AU - Harinaldi, null
AU - Trisno, Ramon
N1 - Publisher Copyright:
© IJTech 2017.
PY - 2017/12/1
Y1 - 2017/12/1
N2 - This paper provides an explanation of the effects of cavity shape and frequency excitation on the vortex formation of a synthetic jet. In order to obtain comprehensive results, this study used both computational and experimental methods. The experimental method was prepared by applying a hotwire probe on the center point of the synthetic jet orifice to obtain the Ux (average airflow velocity from membrane movement) in a low voltage signal. The data were then transferred to an analog data converter within a record speed of 10,000 data/s. The following cavity shapes were studied: half-sphere, tubes, and conical. The studied orifice diameters were 3 mm, 5 mm, and 8 mm. The simulation began by utilizing the flow rate data from the experiment, which can be put in the Computational Fluid Dynamics (CFD) simulation boundary condition. From the visual data of the flow contour from the CFD simulation it is possible to determine the vortex ring formation quality from the Synthetic Jet Actuator (SJA). Based on this result, vortex ring formation occurs at the B3, T3, T5, K3, and K5 configurations of the SJA. The synthetic jet cavity with an 8 mm orifice diameter did not produce the vortex ring.
AB - This paper provides an explanation of the effects of cavity shape and frequency excitation on the vortex formation of a synthetic jet. In order to obtain comprehensive results, this study used both computational and experimental methods. The experimental method was prepared by applying a hotwire probe on the center point of the synthetic jet orifice to obtain the Ux (average airflow velocity from membrane movement) in a low voltage signal. The data were then transferred to an analog data converter within a record speed of 10,000 data/s. The following cavity shapes were studied: half-sphere, tubes, and conical. The studied orifice diameters were 3 mm, 5 mm, and 8 mm. The simulation began by utilizing the flow rate data from the experiment, which can be put in the Computational Fluid Dynamics (CFD) simulation boundary condition. From the visual data of the flow contour from the CFD simulation it is possible to determine the vortex ring formation quality from the Synthetic Jet Actuator (SJA). Based on this result, vortex ring formation occurs at the B3, T3, T5, K3, and K5 configurations of the SJA. The synthetic jet cavity with an 8 mm orifice diameter did not produce the vortex ring.
KW - Active flow control
KW - Ahmed body
KW - Airflow separation
KW - Drag force
KW - Vortex ring
UR - http://www.scopus.com/inward/record.url?scp=85039059719&partnerID=8YFLogxK
U2 - 10.14716/ijtech.v8i7.730
DO - 10.14716/ijtech.v8i7.730
M3 - Article
AN - SCOPUS:85039059719
VL - 8
SP - 1286
EP - 1295
JO - International Journal of Technology
JF - International Journal of Technology
SN - 2087-2100
IS - 7
ER -