Individual 1 Surface exposed(m2): 2.30 Surface area(m2) : 5.10 Exposed area/ area : 0.45
2.30 5.10
0.45 v
Individual 2 Surface exposed(m2): 2.34 Surface area(m2) : 5.00 Exposed area/ area : 0.47
2.34 5.00
0.47 v
Individual 3 Surface exposed(m2): 2.41 Surface area(m2) : 4.92 Exposed area/ area : 0.49
2.41 4.92
0.49 v
Individual 4 Surface exposed(m2): 2.42 Surface area(m2) : 4.82 Exposed area/ area : 0.50
2.42
Fig. 3.2.1 -4
4.82
Experiments 3 variable values, arrangement and patterns, Velocity reduction results.
0.50 v
Experiement 3 Form drag and geometry 25
20
Velocity (m/2)
The principle concluded from Experiment 2 is then brought to Experiment 3 on single geometry and what is the potential to apply as a system integrating all experiment together. The result shows the same trend with the aggregated pattern in Experiment 2 that the higher exposed area or more surface area reduces more velocity after water passes through. Sphere has the
15
10
5
For the application of three experiments, the staggered pattern with smallest grid size with sphere geometrical units should be the most effective velocity reduction grid sizes and the pattern of aggregation. The next experiment then could focus on different pattern and volume of material for the application in different behavioral needs.
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3
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Distance (m)
Legend
1 2 3 4
Within the boundary Behind the boundary Distance of minimum velocity Individual 1 Individual 2 Individual 3 Individual 4
3.0 RESEARCH DEVELOPMENT
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