Orientation dependent elastic stress concentration at tips of slender objects translating in viscoelastic fluids
Orientation dependent elastic stress concentration at tips of slender objects translating in viscoelastic fluids
复制标题
在粘弹性流体中平移的细长物体尖端处与方向相关的弹性应力集中
DOI:
10.1103/physrevfluids.4.031301
复制
发表时间:
2019
影响因子:
2.7
通讯作者:
Guy, Robert D.
中科院分区:
文献类型:
--
作者:
Li, Chuanbin;Thomases, Becca;Guy, Robert D.
Elastic stress concentration at the tips of long slender objects moving in viscoelastic fluids has been observed in numerical simulations, but despite the prevalence of flagellated motion in complex fluids in many biological functions, the physics of stress accumulation near the tips has not been analyzed. Here, we theoretically investigate elastic stress development at the tips of slender objects by computing the leading-order viscoelastic correction to the equilibrium viscous flow around long cylinders, using the weak-coupling limit. In this limit, nonlinearities in the fluid are retained, allowing us to study the biologically relevant parameter regime of high Weissenberg number. We calculate a stretch rate from the viscous flow around cylinders to predict when large elastic stress develops at the tips, find thresholds for large stress development depending on orientation, and calculate greater stress accumulation near the tips of cylinders oriented parallel to the motion over perpendicular.
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DOI:
--
发表时间:
1955-12
期刊:
The Journal of Experimental Biology
影响因子:
--
作者:
J. Gray;G. Hancock
通讯作者:
J. Gray;G. Hancock
影响因子:
3.3
作者:
R. Scirocco;J. Vermant;J. Mewis
通讯作者:
J. Mewis
影响因子:
3.1
作者:
M. Renardy
通讯作者:
M. Renardy
影响因子:
3.1
作者:
G. Galdi
通讯作者:
G. Galdi
影响因子:
3.1
作者:
M. Renardy
通讯作者:
M. Renardy