TY - GEN
T1 - Investigation on acoustic streaming during ultrasonic irradiation in aluminum melts
AU - Yamamoto, Takuya
AU - Komarov, Sergey
N1 - Publisher Copyright:
© 2019, The Minerals, Metals & Materials Society.
PY - 2019
Y1 - 2019
N2 - Acoustic streaming is a key factor in ultrasonic casting of aluminum alloys because it determines heat and mass transfer, and thus affects the temperature distribution, solidification phenomena, solute transport and crystal growth. However, measurement and prediction of acoustic streaming in molten aluminum present a big challenge due to high temperatures and acoustic streaming complexity. In this work, a numerical model has been developed to simulate acoustic streaming in molten aluminum. The model allows predicting generation of cavitation bubbles, sound wave propagation and attenuation due to interaction with the bubbles, and fluid flow. The model validation has been performed by comparing the predicted and measured acoustic streaming in water. Good agreement between these results suggests that the model can be used to predict acoustic streaming in actual casting processes. However, a number of issues still remain to be solved particularly an accurate simulation of bubble oscillations.
AB - Acoustic streaming is a key factor in ultrasonic casting of aluminum alloys because it determines heat and mass transfer, and thus affects the temperature distribution, solidification phenomena, solute transport and crystal growth. However, measurement and prediction of acoustic streaming in molten aluminum present a big challenge due to high temperatures and acoustic streaming complexity. In this work, a numerical model has been developed to simulate acoustic streaming in molten aluminum. The model allows predicting generation of cavitation bubbles, sound wave propagation and attenuation due to interaction with the bubbles, and fluid flow. The model validation has been performed by comparing the predicted and measured acoustic streaming in water. Good agreement between these results suggests that the model can be used to predict acoustic streaming in actual casting processes. However, a number of issues still remain to be solved particularly an accurate simulation of bubble oscillations.
KW - Acoustic streaming
KW - Aluminum melt
KW - Cavitation zone
KW - Numerical simulation
KW - Water model
UR - http://www.scopus.com/inward/record.url?scp=85064869256&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85064869256&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-05864-7_192
DO - 10.1007/978-3-030-05864-7_192
M3 - Conference contribution
AN - SCOPUS:85064869256
SN - 9783030058630
T3 - Minerals, Metals and Materials Series
SP - 1527
EP - 1531
BT - Light Metals, 2019
A2 - Chesonis, Corleen
PB - Springer International Publishing
T2 - Light Metals Symposium held at the TMS Annual Meeting and Exhibition, 2019
Y2 - 10 March 2019 through 14 March 2019
ER -