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Modified model for shear stress distribution using TRI-1 lunar soil simulant

Jayalekshmi S., Gireesh Kumar P.

Journal of Theoretical and Applied Mechanics

2018

Vol. 56 nr 1

137--146

In the present study, research is carried out on deriving modified analytical equations for finding shear stress distribution and known as Modified Shear Stress models (SSM) beneath plain wheels (small and large) on TRI-1 lunar soil simulant. In all four models, the Reece model, Bekker model, Wong-Reece model and Iagnemma model, normal stress and shear stress are determined, and the shear stress determination is based on the Janosi and Hanamoto (1961) model. There exists ample scope for modifying this model. A modified model for shear stress distribution is developed and the same is discussed in this paper.

Flow pattern and shear stress distribution in distal end-to-side anastomosis

Adamiec J., Matecha J., Netrebska H., Tuma J.

Acta of Bioengineering and Biomechanics

2006

Vol. 8, nr 1

3-12

We present the results of the first part of the project whose objective is to optimize the shape of anastomosis (end-to-side), which is used for the bypass anastomosis, and thus to minimize the negative impact of the flow dynamics on the vascular walls and blood, thanks to which the bypass failure risk can be successfully reduced. The Particle Image Velocimetry (PIV) method is used for experimental measurements that are combined with numerical solution. The goal of this work was to develop, both experimentally and numerically, a basic idea of flow behind the distal end-to-side bypass junction, depending on the connection angle both in steady and unsteady conditions.