Modeliranje kretanja i protoka voća na rotacionim kalibratorima
Modeling the motion and mass quantity of fruit by rotating sizing machines
Апстракт
U ovom radu teoretski je analizirano kretanje i protok osam vrsta voća duž rotacionog kalibratora. Polazi se od diferencijalne jednačine kretanja voća na rotirajućem disku kalibratora. Razvijen je opšti model koji može biti primenjen za određivanje protoka za sve tipove rotacionih kalibratora. Analiza protoka obuhvatila je masu i protok kalibriranog voća. Uvedeni su novi iskustveni koeficijenti: koeficijent procentualnog iskorišćenja obima diska, koeficijent punjenja i koeficijent raspodele plodova. Posebno je istražen uticaj relativne brzine voća na kapacitet kalibratora. Za usvojene vrednosti navedenih koeficijenata ke = 0.7, kf = 1, kd = 0.5 dobijeni su rezultati koji se približno poklapaju sa do sada poznatim protocima voća na kalibratorima. Ustanovljeno je da protoci veoma variraju u zavisnosti od dijametra i mase voća. Količinski protok varira od 8949 plod/h za jabuku do 40157 plod/h za duboko zamrznutu malinu. Maseni protok varira od 229,1 kg/h za višnju do 2054,7 kg/h za jabuku....
This paper analyzes theoretically the motion and mass quantity of eight fruit types, roundish in shape, along rotating sizing machines. Mathematical model of the motion of fruit on the rotating disc is solved in spherical coordinate system which is tied to the disc. The exact solution is simplified introducing assumptions that are do not significantly affect the accuracy of the solution. Starting from differential equation of fruit motion on a rotating disk of the sizing machine, all forces acting on fruit were determined as well as velocities and time necessary for fruit to reach the disk rim if found in some upper position on the cone. Mass quantity analysis comprised sized fruit mass and weight capacity. New empirical coefficients were introduced: extent ratio, feed ratio and distribution ratio. The results obtained for the adopted values ke = 0.7, kf = 1, kd = 0.5 coincide approximately with those reported to date for fruit mass quantity rate on sizing machines. It was found that m...ass quantity rates vary considerably, depending on fruit diameter and mass. Fruit numbers mass quantity ranges from 8949 crops/h for apple to 40,157 crops/h for deep frozen raspberry. Mass quantity varies from 229.1 kg/h for cherry to 2054.7 kg/h for apple.
Кључне речи:
mass quantity / fruit sizing / fruit motionИзвор:
FME Transactions, 2014, 42, 1, 34-39Издавач:
- Univerzitet u Beogradu - Mašinski fakultet, Beograd
Финансирање / пројекти:
- Истраживање и развој опреме и система за индустријску производњу, складиштење и прераду поврћа и воћа (RS-MESTD-Technological Development (TD or TR)-35043)
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Marković, Dragan AU - Mladenović, Nikola AU - Simonović, Vojislav AU - Marković, Ivana PY - 2014 UR - https://machinery.mas.bg.ac.rs/handle/123456789/1941 AB - U ovom radu teoretski je analizirano kretanje i protok osam vrsta voća duž rotacionog kalibratora. Polazi se od diferencijalne jednačine kretanja voća na rotirajućem disku kalibratora. Razvijen je opšti model koji može biti primenjen za određivanje protoka za sve tipove rotacionih kalibratora. Analiza protoka obuhvatila je masu i protok kalibriranog voća. Uvedeni su novi iskustveni koeficijenti: koeficijent procentualnog iskorišćenja obima diska, koeficijent punjenja i koeficijent raspodele plodova. Posebno je istražen uticaj relativne brzine voća na kapacitet kalibratora. Za usvojene vrednosti navedenih koeficijenata ke = 0.7, kf = 1, kd = 0.5 dobijeni su rezultati koji se približno poklapaju sa do sada poznatim protocima voća na kalibratorima. Ustanovljeno je da protoci veoma variraju u zavisnosti od dijametra i mase voća. Količinski protok varira od 8949 plod/h za jabuku do 40157 plod/h za duboko zamrznutu malinu. Maseni protok varira od 229,1 kg/h za višnju do 2054,7 kg/h za jabuku. AB - This paper analyzes theoretically the motion and mass quantity of eight fruit types, roundish in shape, along rotating sizing machines. Mathematical model of the motion of fruit on the rotating disc is solved in spherical coordinate system which is tied to the disc. The exact solution is simplified introducing assumptions that are do not significantly affect the accuracy of the solution. Starting from differential equation of fruit motion on a rotating disk of the sizing machine, all forces acting on fruit were determined as well as velocities and time necessary for fruit to reach the disk rim if found in some upper position on the cone. Mass quantity analysis comprised sized fruit mass and weight capacity. New empirical coefficients were introduced: extent ratio, feed ratio and distribution ratio. The results obtained for the adopted values ke = 0.7, kf = 1, kd = 0.5 coincide approximately with those reported to date for fruit mass quantity rate on sizing machines. It was found that mass quantity rates vary considerably, depending on fruit diameter and mass. Fruit numbers mass quantity ranges from 8949 crops/h for apple to 40,157 crops/h for deep frozen raspberry. Mass quantity varies from 229.1 kg/h for cherry to 2054.7 kg/h for apple. PB - Univerzitet u Beogradu - Mašinski fakultet, Beograd T2 - FME Transactions T1 - Modeliranje kretanja i protoka voća na rotacionim kalibratorima T1 - Modeling the motion and mass quantity of fruit by rotating sizing machines EP - 39 IS - 1 SP - 34 VL - 42 DO - 10.5937/fmet1401034M ER -
@article{ author = "Marković, Dragan and Mladenović, Nikola and Simonović, Vojislav and Marković, Ivana", year = "2014", abstract = "U ovom radu teoretski je analizirano kretanje i protok osam vrsta voća duž rotacionog kalibratora. Polazi se od diferencijalne jednačine kretanja voća na rotirajućem disku kalibratora. Razvijen je opšti model koji može biti primenjen za određivanje protoka za sve tipove rotacionih kalibratora. Analiza protoka obuhvatila je masu i protok kalibriranog voća. Uvedeni su novi iskustveni koeficijenti: koeficijent procentualnog iskorišćenja obima diska, koeficijent punjenja i koeficijent raspodele plodova. Posebno je istražen uticaj relativne brzine voća na kapacitet kalibratora. Za usvojene vrednosti navedenih koeficijenata ke = 0.7, kf = 1, kd = 0.5 dobijeni su rezultati koji se približno poklapaju sa do sada poznatim protocima voća na kalibratorima. Ustanovljeno je da protoci veoma variraju u zavisnosti od dijametra i mase voća. Količinski protok varira od 8949 plod/h za jabuku do 40157 plod/h za duboko zamrznutu malinu. Maseni protok varira od 229,1 kg/h za višnju do 2054,7 kg/h za jabuku., This paper analyzes theoretically the motion and mass quantity of eight fruit types, roundish in shape, along rotating sizing machines. Mathematical model of the motion of fruit on the rotating disc is solved in spherical coordinate system which is tied to the disc. The exact solution is simplified introducing assumptions that are do not significantly affect the accuracy of the solution. Starting from differential equation of fruit motion on a rotating disk of the sizing machine, all forces acting on fruit were determined as well as velocities and time necessary for fruit to reach the disk rim if found in some upper position on the cone. Mass quantity analysis comprised sized fruit mass and weight capacity. New empirical coefficients were introduced: extent ratio, feed ratio and distribution ratio. The results obtained for the adopted values ke = 0.7, kf = 1, kd = 0.5 coincide approximately with those reported to date for fruit mass quantity rate on sizing machines. It was found that mass quantity rates vary considerably, depending on fruit diameter and mass. Fruit numbers mass quantity ranges from 8949 crops/h for apple to 40,157 crops/h for deep frozen raspberry. Mass quantity varies from 229.1 kg/h for cherry to 2054.7 kg/h for apple.", publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd", journal = "FME Transactions", title = "Modeliranje kretanja i protoka voća na rotacionim kalibratorima, Modeling the motion and mass quantity of fruit by rotating sizing machines", pages = "39-34", number = "1", volume = "42", doi = "10.5937/fmet1401034M" }
Marković, D., Mladenović, N., Simonović, V.,& Marković, I.. (2014). Modeliranje kretanja i protoka voća na rotacionim kalibratorima. in FME Transactions Univerzitet u Beogradu - Mašinski fakultet, Beograd., 42(1), 34-39. https://doi.org/10.5937/fmet1401034M
Marković D, Mladenović N, Simonović V, Marković I. Modeliranje kretanja i protoka voća na rotacionim kalibratorima. in FME Transactions. 2014;42(1):34-39. doi:10.5937/fmet1401034M .
Marković, Dragan, Mladenović, Nikola, Simonović, Vojislav, Marković, Ivana, "Modeliranje kretanja i protoka voća na rotacionim kalibratorima" in FME Transactions, 42, no. 1 (2014):34-39, https://doi.org/10.5937/fmet1401034M . .