百度试题 结果1 题目The figure shows the relationship between shear stress and velocity gradient for two fluids, A and B. Which of the following is a true statement?()。 相关知识点: 试题来源: 解析 A
The figure shows the relationship between shear stress and velocity gradient for two fluids, A and B. Which of the following is a true statement?()。A. Absolute viscosity of A is greater than that of B B. Absolute viscosity of A is less than that of B C. Kinematic viscosity of A...
shear stress Thesaurus Medical Encyclopedia Wikipedia Related to shear stress:Shear strain,Normal stress shear stress n. Stress resulting from the application of opposing forces parallel to a cross-sectional area of a body. Also calledshearing stress. ...
Shear stress equations are used widely because of their simplicity. On the other hand, they have a critical limitation of requiring an energy gradient, which is generally difficult to estimate in practice. In particular, measuring the shear stress and velocity gradient on the boundary layer is ...
Specifically, the elastic loading part in the serration corresponds to the “stick” phase of shear banding, where the band moves in a velocity much slower than the loading rate (v ≪ v0), while the sudden stress drop part corresponds to the rapid shear band operation with the ...
The current work provides a comprehensive evaluation of the impact of regular and irregular boundaries of the composite materials on the phase velocity of the SH waves. It is notable that the behavior of the reinforced parameters, initial stress, and porosity on the phase velocity is consistent ...
where dvdy is the velocity gradient in the direction perpendicular to the shear force. In the absence of CFD simulation data, detailed information of the shear rates/stress is unavailable, motivating the use of mean / max methods. The mean shear stress, τ̅, can be estimated by considering...
As the topic says I have a highly unsteady solution which I'd like to find the "time-averaged" wall shear stress for. Ideally I would simply
2.1.1 Shear yield stress and plastic viscosity The shear yield stress (τ0) is the minimum stress to initiate or maintain flow. Thus, it is defined into two parts viz. static yield stress (τ0s) and dynamic yield stress (τ0d). The minimum stress that is required to initiate flow is...
Turbulent momentum and velocity always have the greatest gradient along wall-normal direction in straight channel flows; this has led to the hypothesis that surplus energy within any control volume in a three-dimensional flow will be transferred toward its nearest boundary to dissipate. Starting from...