Calibration of a Spinning Disc Spreader Simulation Model for Accurate Site-specific Fertiliser Application

Dintwa, E.; Tijskens, Engelbert; Olieslagers, R.; Baerdemaeker, Josse De; Ramón, Herman

doi:10.1016/j.biosystemseng.2004.01.001

Cited by 28 publications

(15 citation statements)

References 6 publications

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“…Particle rolls along the vane without slipping. Following [23,27,29,30], bouncing of particles over the disc and its vanes was neglected. This way, it is assumed that the particle is carried out by the rotating vane along the whole travel on the disc.…”

Section: Assumptionsmentioning

confidence: 99%

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Prediction of a fertilizer particle motion along a vane of a centrifugal spreader disc assuming its pure rolling

Tomantschger¹,

Petrović

Cerovic

et al. 2018

FME Transactions

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The paper analyzes the motion of idealized spherical homogeneous fertilizer particle along the straight vane attached to flat rotating disc. The analysis, based on the assumption on the pure rolling of the particle along the vane (without sliding), has been performed in the non-inertial reference coordinate system, which rotates together with the spreader disk. The particle motion along the vane is described by hyperbolic cosine function, which is the solution of the ordinary in-homogenous secondorder differential equation having constant coefficients. Solution of this kind represents an approximation of the real motion of fertilizer particle along the radial vane fixed to horizontal disc rotating at constant angular velocity. However, it can be very useful for optimization of centrifugal spreader design and working parameters, as well as for further analysis of the whole fertilizer spreading process that also includes particle flight.

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Section: Assumptionsmentioning

confidence: 99%

“…More advanced models were presented by [12,13,16,29,30]. However, they were also based on the assumption that particles do not interact mutually, what may cause prediction errors.…”

Section: Introductionmentioning

confidence: 99%

Prediction of a fertilizer particle motion along a vane of a centrifugal spreader disc assuming its pure rolling

Tomantschger¹,

Petrović

Cerovic

et al. 2018

FME Transactions

View full text Add to dashboard Cite

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“…However, theoretically, it is very difficult to accurately calculate the distribution of mineral fertilisers along the spreading width, since the fertilisers, used now (even of the same chemical composition), have significant variations in the size of particles or granules, specific gravity and some variations in the design and technological indicators, and also there is a specific aerodynamics of the particle flight of the fertilisers in the air. The differences in the characteristics of the distribution of fertilisers also take place when using different types of fertilisers that differ in the parameters of the weight and shape of the granules [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations in distribution process of ammonia nitrate by orking body with inclined axis

Bulgakov

Adamchuk²,

Rucins

et al. 2021

20th International Scientific Conference Engineering for Rural Development Proceedings

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Improvement of machines for the application of mineral fertilisers is an urgent task both in terms of increasing productivity and uniform distribution across the working width. The disc centrifugal apparatus, as a rule, have a vertical axis of rotation. A working hypothesis has been suggested that the inclination of the axis of rotation in this case makes it possible to increase the spreading distance of fertilisers and thereby increase the working width of spreading. For experimental research a special stand was developed that allows to study distribution depending on the inclination of rotation axis of the fertiliser distribution disc, the disc rotation frequency and a number of other parameters. The investigations were carried out using ammonium nitrate. It was found that an increase in the rotational frequency of the disc of the new working body 500…1100 rpm, and the angle of inclination of rotation axis to the horizontal plane 55…95 º leads to a significant displacement of the entire mass of fertilisers from the spreading working body in the direction of their distribution. Better performance of the technological process of the fertiliser application by the range and uniformity of distribution takes place, when the angle of inclination of rotation axis of the disc of the new fertiliser distribution working body in the horizontal plane is within 55…60 º.

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“…Pettersen et al [12] also reported the influence of fertilizer particle size on the distribution for a twin-disc spreader. Previous research found the initial drop location of particles on the disc was one of the most sensitive factors affecting the spread pattern [10,13,14] . This finding rendered spreading pattern optimum for varying application rates by controlling the position of the feed gates [2] .…”

Section: Introduction mentioning

confidence: 99%

Development of a variable rate applicator for uniform fertilizer spreading

Han

Lee

Hong

et al. 2019

International Journal of Agricultural and Biological Engineering

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Environmental impact and economic concerns have driven a variable rate technology (VRT). Spinner spreaders were mainly used for granular fertilizer application since they are simple in design, inexpensive, and can cover large areas. However, the spreader was not adequate for VRT because uniformity changes drastically while varying application rates. Thus, the purpose of this study was to develop a variable rate applicator with uniform spreading patterns. A commercial spreader was modified with a controller and electric actuators for controlling fertilizer discharge directions and amounts. Database was established to determine the optimum discharge direction according to the fertilizer application amount. The uniformity of spreading patterns in accordance with the spread amount per set unit area was evaluated by the statistical coefficient of variation (CV) lower than 15% is assumed to prevent damage to the crop. Test results showed that CVs were 8%, 9%, and 8%, respectively, for a tractor in race track mode (adjacent passes in same direction of travel) at 200 kg/hm 2 , 300 kg/hm 2 , and 400 kg/hm 2. This indicates that the fertilizer was spread uniformly, while the coefficient of variation was 12% at 200 kg/hm 2 in back and forth mode (adjacent passes in the opposite direction of travel). Overall, the results suggest that the race track mode is suitable for operation of a tractor to ensure uniform spreading of fertilizer when applying at variable rates. The future goal is to establish a system for automatic variable rate application according to location in connection with soil analysis and geographic information systems.

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Calibration of a Spinning Disc Spreader Simulation Model for Accurate Site-specific Fertiliser Application

Cited by 28 publications

References 6 publications

Prediction of a fertilizer particle motion along a vane of a centrifugal spreader disc assuming its pure rolling

Prediction of a fertilizer particle motion along a vane of a centrifugal spreader disc assuming its pure rolling

Experimental investigations in distribution process of ammonia nitrate by orking body with inclined axis

Development of a variable rate applicator for uniform fertilizer spreading

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