Based on the analysis of the velocity gradient tensor, we investigate in this paper the
physical interpretation and limitations of four vortex criteria: $\omega $, $ Q $, $\varDelta …

In this paper, we present a direct numerical simulation (DNS) of elastic turbulence of
viscoelastic fluid at vanishingly low Reynolds number (Re= 1) in a three-dimensional …

本文基于速度梯度张量分析, 对其中四种ω 判据, Q 判据,∆ 判据, λci 判据的物理意义和局限性
进行分析, 揭示各判据常用等值面展示的涡形态或强度的实际物理意义. 首次采用基于速度梯度 …

Large-eddy simulations (LES) based on the temporal approximate deconvolution model
were performed for a forced homogeneous isotropic turbulence (FHIT) with polymer …

Direct numerical simulation of polymer-laden turbulent flow is performed for the investigation
of the two-way interaction. Lagrangian dynamic simulation is adopted for a finitely extensible …

Our previous experimental studies have confirmed that viscoelastic-fluid-based nanofluid
(VFBN) prepared by suspending nanoparticles in a viscoelastic base fluid (VBF, behaves …

基于相同雷诺数下清水和高分子聚合物溶液壁湍流的高时间分辨率粒子图像测速技术(time-
resolved particle image velocimetry, TRPIV) 的对比实验, 从高聚物溶液对湍流边界层动量能量 …

This paper presented a direct numerical simulation (DNS) study on the elasticity-induced
irregular flow, passive mixing, and scalar evolution in the curvilinear microchannel. The …

In this paper, to study the viscoelastic effect on isotropic turbulence without wall effects, a two
oscillating grid turbulence is built to investigate this phenomenon using particle image …

Our previous experimental studies have confirmed that viscoelastic-fluid-based nanofluid
(VFBN) prepared by suspending nanoparticles in a viscoelastic base fluid (VBF, behaves …