TY - JOUR
T1 - Scalar structures around the mixing interface of a thermal mixing layer in multiscale-generated decaying turbulent flows visualized using DNS database
AU - Jomura, Shotaro
AU - Suzuki, Hiroki
AU - Mochizuki, Shinsuke
AU - Sakai, Yasuhiko
N1 - Funding Information:
This work was supported in part by the Japanese Ministry of Education, Culture, Sports, Science and Technology through Grants-in-Aid (Nos. 18H01369, 18K03932, 20H02069, and 21K03859).
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2021/7/27
Y1 - 2021/7/27
N2 - This study shows the results for the visualization of a scalar mixing layer in decaying turbulence produced by a multiscale-generated turbulence grid. For this purpose, a thermal mixing layer in the air is used as the scalar mixing layer. A fractal generating grid proposed in the previous study is used for the generation of multiscale-generated turbulence. In addition, a parameter for determining the grid shape is varied. The scalar field is then visualized using a database given by direct numerical simulations. The instantaneous scalar field, the instantaneous scalar fluctuation field, the instantaneous scalar variance field, and the scalar dissipation field are visualized, and the visualization results are discussed using the wake interaction length scale.
AB - This study shows the results for the visualization of a scalar mixing layer in decaying turbulence produced by a multiscale-generated turbulence grid. For this purpose, a thermal mixing layer in the air is used as the scalar mixing layer. A fractal generating grid proposed in the previous study is used for the generation of multiscale-generated turbulence. In addition, a parameter for determining the grid shape is varied. The scalar field is then visualized using a database given by direct numerical simulations. The instantaneous scalar field, the instantaneous scalar fluctuation field, the instantaneous scalar variance field, and the scalar dissipation field are visualized, and the visualization results are discussed using the wake interaction length scale.
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U2 - 10.1088/1742-6596/1978/1/012012
DO - 10.1088/1742-6596/1978/1/012012
M3 - Conference article
AN - SCOPUS:85112444640
SN - 1742-6588
VL - 1978
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012012
T2 - 4th International Conference on Physics, Mathematics and Statistics, ICPMS 2021
Y2 - 19 May 2021 through 21 May 2021
ER -