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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 11    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 11, November 2011
Application of Frictional Modeling In Simulation and Optimization of The Design And Performance Of A Cereal Thresher
Full Text(PDF, 3000)  PP.  
Engr. C.O. Osueke (Ph.D)
Simulated, Optimized, Model, Frictional, Performance, Developed, Design
To achieve a productive model, the operation processes need to be modeled, the model have to be properly packaged and the results thereafter should be compared and verified with other conventional models to prove validity. This forms the structure of the cereal thresher model developed. To achieve this, the processes were modeled mathematically using the various thresher and crop parameters (velocity of cylinder, crop feed rate, concave clearance, crop flow rate etc) and in-cooperating the frictional factor. After which the sub-models that characterizes performance was hence developed. The model was packaged using computer aided software based on VISUAL BASIC programming language. Using the model, the performance of the thresher was simulated and hence optimized based on minimum threshing loss. At 15% moisture level, the minimal loss is 11.78%, capacity is 211.52 kg/h and unthreshed grain flow rate of 0.021 kg/s while other performance characteristics are v= 18m/s, Q= 0.18kg/s, c= 0.02m. On validation with published data of past researchers, the model was found generally to fit well, taking R2 values which is highly significant at a= 0.001.
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