Paper Information

Journal:   JOURNAL OF AGRICULTURAL SCIENCES   Winter 2004 , Volume 9 , Number 4; Page(s) 35 To 51.
 
Paper: 

DETERMINATION OF DRAG FORCE OF IRANIAN CHICKPEA

 
 
Author(s):  MOHTASEBI S.S., RABANI H., BEHROUZILAR M., GERAMI A.
 
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Abstract: 

Drag force is one of the aerodynamic properties of Chickpea that is used extensively in the pneumatic separation and conveying systems in agricultural machinery and process engineering. Based on dimension eight samples of Chickpea were chosen. In order to hold Chickpeas in the wind tunnel 450 mm length comb was used. There are needles on the comb with 30 mm intervals.
The experiment was done at three different moisture levels (42%, 46%, 52% wet basis) and at three different air velocities (10m/s, 12m/s, 15m/s) for eight dimension and at eight replications. Factorial experiment based on completely randomized design was used to analyze data.
Effect of dimension moisture content and air velocity on the drag force at
α=1% were more significant and their interactions did too. The mean of drag force was 7.923× 10-3 N the highest and the lowest were 18.8× 10-3 N, and 3.91 ×10-3 N, respectively. Drag force increases with increasing dimension moisture content and air velocity.
Finally the results are shown based on the regression analysis with the related equations and tables.

 
Keyword(s): DRAG FORCE, AERODYNAMIC PROPERTIES, CHICKPEA, PNEUMATIC SEPARATION SYSTEMS, PNEUMATIC CONVEYING, HARVESTING MACHINES
 
References: 
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