Defining Geometric Similarity in Soils

2005 ◽  
Vol 4 (2) ◽  
pp. 264-270 ◽  
Author(s):  
Bhabani S. Das ◽  
Nathan W. Haws ◽  
P. Suresh C. Rao
Keyword(s):  
Geometric Similarity

Morphological Characteristics of Elite Squash Players Using the Geometric Similarity System

2004 ◽  
Vol 21 ◽  
pp. 553-563
Author(s):  
Eung Joon Kim ◽  
Bum Chul Shin ◽  
Gu Am Hyung ◽  
Jun Woo Lee
Keyword(s):  
Morphological Characteristics ◽  
Geometric Similarity

scholarly journals Quantitative measure of structural and geometric similarity of 3D morphologies

Complexity ◽  
2011 ◽  
Vol 16 (6) ◽  
pp. 40-52 ◽  
Author(s):  
Maciej Komosinski ◽  
Marek Kubiak
Keyword(s):  
Quantitative Measure ◽  
Geometric Similarity

The Effect of Reynolds Number on the Aerodynamic Performance of Micro Radial Flow Fans

2005 ◽  
Author(s):  
K. Hanly ◽  
R. Grimes ◽  
E. Walsh ◽  
B. Rodgers ◽  
J. Punch
Keyword(s):  
Reynolds Number ◽  
Heat Dissipation ◽  
Radial Flow ◽  
Aerodynamic Characteristics ◽  
Aerodynamic Performance ◽  
Fundamental Change ◽  
Geometric Similarity ◽  
Flow Phenomena ◽  
Conventional Cooling ◽  
High Degree

Elevated heat dissipation and simultaneous reductions in package sizes are well documented for a range of electronics systems. The problem is heightened in portable systems where the space available for the implementation of an active cooling methodology is limited and conventional cooling products are too large. Using micro scale radial flow fans is a potential solution. However, little is known about the aerodynamic effects of reducing the fan scale and therefore Reynolds number to the extent required for typical portable electronic applications. This paper investigates this issue, by quantifying the reduction in aerodynamic performance which accompanies the reductions in scale. To do this, geometrically similar radial flow fans were fabricated with diameters ranging from 80 to 10mm. Measurements of the rotors’ geometries are presented, showing a high degree of geometric similarity between the fans. The aerodynamic performance of each of the fans was measured. Non-dimensional performance of each of the larger fans were almost identical, while the performance plot of the smallest fan differed significantly from the others. The paper tentatively concludes that a fundamental change in flow phenomena has emerged in the smallest scale fan which has altered its aerodynamic characteristics.

Effects of geometric similarity ratio on the disturbance amplitude of shock-wave front in viscosity measurement

2021 ◽  
pp. 2150330
Author(s):  
Kai Yang ◽  
Quan-Yu Xu ◽  
Xiao Wu ◽  
Xiao-Juan Ma
Keyword(s):  
Shock Wave ◽  
Phase Shift ◽  
Wave Front ◽  
Shock Wave Front ◽  
Numerical Solutions ◽  
Initial Conditions ◽  
Viscosity Measurement ◽  
Geometric Similarity ◽  
Similarity Ratio ◽  
Simulation Results

Geometric similarity ratio is one of the important factors that affects the disturbance amplitude of shock-wave front in viscosity measurement. In this paper, the Euler difference scheme of two-dimensional (2D) equations of viscous fluid mechanics is used to simulate the disturbance amplitude damping curves under different geometric similarity ratios, and the corresponding numerical solutions are shown. The samples of aluminum shocked to 80 GPa are taken as an example. The simulation results show that the initial conditions, material viscosity, wavelength, and sample geometric similarity ratio affect the evolution of the shock front sine wave disturbance. For flyer-impact flow field, the phase shift increases from 0 to a certain value with the viscosity coefficient for sample with wavelength [Formula: see text] mm and geometric similarity ratio [Formula: see text], 0.1. So, the geometric similarity method can be used to measure the viscosity of material. But it is found that the phase shift is sensitive to the geometric similarity ratio, which should be considered in Zaidel’s equation. So, some flyer-impact experiments will be carried out to determine the simulation results, and find the quantity relation of phase shift and viscosity of material in the future investigation.

scholarly journals Exploiting geometric similarity for statistical quantification of fluorescence spatial patterns in bacterial colonies

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
David R. Espeso ◽  
Elena Algar ◽  
Esteban Martínez-García ◽  
Víctor de Lorenzo
Keyword(s):  
Spatial Patterns ◽  
Geometric Similarity

scholarly journals The breaking of geometric similarity

2020 ◽  
Vol 187 ◽  
pp. 105925
Author(s):  
Keith Davey ◽  
Rooholamin Darvizeh ◽  
Ali Golbaf ◽  
Hamed Sadeghi
Keyword(s):  
Geometric Similarity
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