TY - JOUR
T1 - Numerical Simulation of Flat Plate Boundary Layer Transition with Synthetic Inlet Turbulence
AU - Lu, Lianshan
AU - Wang, Xiangyu
AU - Li, Dong
N1 - Publisher Copyright:
© 2019, The Korean Society for Aeronautical & Space Sciences and Springer Nature Singapore Pte Ltd.
PY - 2019/3/1
Y1 - 2019/3/1
N2 - A large-eddy simulation (LES) of a flat plate boundary layer undergoing transition to turbulence, i.e., ERCOFTAC’s test case T3B, is performed with synthetic inlet turbulent fluctuations. Generated by Billson and Davidson’s method, the isotropic and homogeneous synthetic turbulence is imposed on a uniform flow directly at the inlet of the computational domain without a precursor adaptation region. The issue of the maximum-contained number (MCN) is specified, which aims at the determination of mesh distribution to maintain and strengthen the correlation between neighboring cells. The numerical results are realistic under the original synthetic turbulence if the MCN is suitably set. For further improvement of the prediction, a correction based on the Poisson equation is adopted to make the synthetic turbulence divergence-free, which is the basic requirement of incompressible flow. It is shown that with the divergence correction, the simulation results are better, and in particular, the decay of free stream turbulence near the upper boundary is more reasonable.
AB - A large-eddy simulation (LES) of a flat plate boundary layer undergoing transition to turbulence, i.e., ERCOFTAC’s test case T3B, is performed with synthetic inlet turbulent fluctuations. Generated by Billson and Davidson’s method, the isotropic and homogeneous synthetic turbulence is imposed on a uniform flow directly at the inlet of the computational domain without a precursor adaptation region. The issue of the maximum-contained number (MCN) is specified, which aims at the determination of mesh distribution to maintain and strengthen the correlation between neighboring cells. The numerical results are realistic under the original synthetic turbulence if the MCN is suitably set. For further improvement of the prediction, a correction based on the Poisson equation is adopted to make the synthetic turbulence divergence-free, which is the basic requirement of incompressible flow. It is shown that with the divergence correction, the simulation results are better, and in particular, the decay of free stream turbulence near the upper boundary is more reasonable.
KW - Boundary layer transition
KW - Divergence correction
KW - Large-eddy simulation
KW - Synthetic turbulence
UR - http://www.scopus.com/inward/record.url?scp=85063781193&partnerID=8YFLogxK
U2 - 10.1007/s42405-018-0112-5
DO - 10.1007/s42405-018-0112-5
M3 - 文章
AN - SCOPUS:85063781193
SN - 2093-274X
VL - 20
SP - 80
EP - 89
JO - International Journal of Aeronautical and Space Sciences
JF - International Journal of Aeronautical and Space Sciences
IS - 1
ER -