Both a priori and a posteriori tests are carried out.It is observed that the subgrid-scale contributions to the LTCs cannot be simply ignored and the LES overpredicts the LTCs than the DNS.

• 通过先、后验研究发现，亚格子尺度运动对拉格朗日时间关联的影响不能被简单忽略，大涡模拟会高估拉格朗日时间关联。