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Aero-dynamic Properties for Some Egyptian Olive Varieties (Fruits and Leaf)
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Abstract: Olive leaf removal is one of the most important stage affect oil quality during extracting process stages. Therefore it is essential to study aerodynamic properties and some relevant physical properties of both fruits and their leaf to provide the designers and the manufacturers of olive leaf removal machines with the aerodynamic parameters helps for designing and constructing that machines.
Objectives of the present investigation were to measure or calculate the aerodynamic properties such as; [terminal velocity (tv), Drag coefficient (Cd), Resistance coefficient (K), and Reynolds Number (Re)] and some relevant physical properties such as; [particle mass (m), particle real density (ρp), and particle projection area (Ap)] for both olive fruits and their leaf for the common five Egyptian varieties which following two main groups namely:
1- Oil production group: (Shimlaly and Kronaki varieties);
2- Duel purpose group: (Watiken, Picual, and Manzanillo varieties).
The obtained results indicated that the terminal velocities of olive fruits ranged from [ (9.5 to 16.5), (10 to 15.5), (10.5 to 18.5), (12 to 19), and (11 to 18.5) m/s] and for leaf ranged from [ ( 5 to 11.5), (5 to 11), (4.5 to 11.5), (5 to 13), and (4 to 12.5), m/s] for shimlaly, kronaki, watiken, picual, and manzanillo varieties, respectively. The overlapping area for the terminal velocities frequency curves of both fruits and leaves ranged from [(9.5 to 11.5), (10 to 11.25), (10.5 to 11.5), (12 to 13.5), and (11 to 12.5), m/s] for the previously varieties, respectively.
Multi-regression analysis illustrated that there are empirical equations with highly correlation used to predict: [a) projection area as a function of length and diameter; b) terminal velocity as a function of weight and projection area; c) terminal velocity as a function of weight, projection area, length, and diameter] for both fruits and leaf as follows.
Yi = a + b X1 + c X2 + d X3 + e X4
Where: i is different varieties.
a, b, c, d and e, are constants changing according to independent variable and investigated variety.
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| Publication year |
2005
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| Organization Name |
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| Department |
Biological engineering
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| Author(s) from ARC |
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AGROVOC
TERMS |
Olives.
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| Proposed Agrovoc |
الايروديناميكية لبعض الزيتون;
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| Publication Type |
Journal
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