# IYPT Australia Extended Experimental Investigation 2017 Problem Selection: All students must see their teacher to nominate their chosen problem and name their partner (if appropriate) by: Friday 6...

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Non-adhesive granular materials can be poured such that they form a cone-like pile. Investigate the parameters that affect the formation of the cone and the angle it makes with the ground.

based on that question need to find around 10 relevant resources. Also all the resources has to be very relevant and take notes from each resouces, eg. pdf, book, article.. etc

Answered Same DayOct 23, 2019

## Answer To: IYPT Australia Extended Experimental Investigation 2017 Problem Selection: All students must see...

David answered on Dec 27 2019
Running Header: Parameters that will affect the formation of a cone
Title: Parameters that will affect the formation of a cone
Presented By:
Presented To:
Date: 25/10/2017
Preface
In variety of applications, it will be required to formulate a cone from the non-gran
ular materials. The typical formulations of cone like pile will also depend on the factors like adhesiveness and non-adhesiveness of the materials as well will also depend on the actual cone geometrical parameters as well. The following part of the discussion will focus on these elements of the formulation that will affect the cone formulation. Typical factors considered for study are the adhesiveness of the particles, particle sizes, angle of repose etc. The findings and the discussion presented in the report will be used for the setting the particle sizes and the funnel sizes in the related experimentations.
Discussion:
Particle Shapes:
Angle of repose or the angle of the heap will depend on the particle size of the elements that makes up the heap. It can also define as the steepest angle or the angle of the dip at the sideways at which the actual particles start sliding down. This angle can be anywhere from 0 to 90 degrees. The angle of repose will depend on the particle shape and the interparticle friction as well. If the particle has more number of corners, the angle of repose will be decreased. At the same time if the particle do have elongated sides the impact of the particle shape on the angle of repose will be suppressed and this in turn will depend on the inter particle friction. As the coefficient of friction increases the angle of repose also will increase to some extent, there after the angle of repose will saturate and subsequently the angle of repose will start decrease. At the point of saturation, the rotation and the coefficient of friction will compete as the causes of motion of the particles(El shou
agy,2005).Fig-2 indicates the impact of the number of corners on the angle of repose, however the impact of the elongation interms of the suppression of the effect on angle of repose can also be seen in the figure.
Gravity effect on the angle of repose:
The angles of repose of the granular material will depend on the gravity impact as well. In the case of low gravity substances the static angle of repose will increase and the dynamic angle of repose will decrease. However the findings are reported for the particle sizes ranging from 0.2 mm to 2.4 mm and the particles are both smooth spherical as well are angular particles as well. Further there is usage of air and water as interstitial fluid. Further at the level of planetary surfaces it is expected that lower dynamic angles of...
SOLUTION.PDF