Mathematical Modeling of the Drying Process of Coconut Meat

2015 ◽  
Author(s):  
LOLA DOMNINA
Keyword(s):  
Mathematical Modeling ◽  
Drying Process ◽  
Coconut Meat

scholarly journals Freeze-drying microscopy in mathematical modeling of a biomaterial freeze-drying

2012 ◽  
Vol 48 (2) ◽  
pp. 203-209 ◽  
Author(s):  
Camila Figueiredo Borgognoni ◽  
Joyce da Silva Bevilacqua ◽  
Ronaldo Nogueira de Moraes Pitombo
Keyword(s):  
Mathematical Modeling ◽  
Freeze Drying ◽  
Drying Process ◽  
Critical Temperatures ◽  
Fundamental Properties ◽  
Moving Interface ◽  
Energy Consuming ◽  
Sublimation Rates ◽  
Time And Energy

Transplantation brings hope for many patients. A multidisciplinary approach on this field aims at creating biologically functional tissues to be used as implants and prostheses. The freeze-drying process allows the fundamental properties of these materials to be preserved, making future manipulation and storage easier. Optimizing a freeze-drying cycle is of great importance since it aims at reducing process costs while increasing product quality of this time-and-energy-consuming process. Mathematical modeling comes as a tool to help a better understanding of the process variables behavior and consequently it helps optimization studies. Freeze-drying microscopy is a technique usually applied to determine critical temperatures of liquid formulations. It has been used in this work to determine the sublimation rates of a biological tissue freeze-drying. The sublimation rates were measured from the speed of the moving interface between the dried and the frozen layer under 21.33, 42.66 and 63.99 Pa. The studied variables were used in a theoretical model to simulate various temperature profiles of the freeze-drying process. Good agreement between the experimental and the simulated results was found.

scholarly journals Mathematical modeling of the drying process of corn ears

2011 ◽  
Vol 33 (4) ◽  
Author(s):  
Paulo Cesar Corrêa ◽  
Fernando Mendes Botelho ◽  
Gabriel Henrique Horta Oliveira ◽  
André Luis Duarte Goneli ◽  
Osvaldo Resende ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Drying Process

Investigation of glass transition behavior in a rice kernel drying process by mathematical modeling

2019 ◽  
Vol 38 (8) ◽  
pp. 1092-1105 ◽  
Author(s):  
Lijuan Zhao ◽  
Junhong Yang ◽  
Shanshan Wang ◽  
Zhonghua Wu
Keyword(s):  
Mathematical Modeling ◽  
Glass Transition ◽  
Drying Process ◽  
Transition Behavior

Convective and Microwave Drying of Prolate Spheroidal Solids: Modeling and Simulation

2019 ◽  
Vol 391 ◽  
pp. 233-238
Author(s):  
E. Gomes da Silva ◽  
E. Santana de Lima ◽  
W.M. Paiva Barbosa de Lima ◽  
A.G. Barbosa de Lima ◽  
J.J. Silva Nascimento ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Heat Balance ◽  
Diffusion Theory ◽  
Microwave Drying ◽  
Drying Process ◽  
Balance Equations ◽  
Prolate Spheroidal ◽  
Moisture Migration ◽  
Prolate Spheroidal Coordinates ◽  
Spheroidal Coordinates

This paper focuses some fundamental aspects of combined convective and microwave drying of prolate spheroidal solids. A transient mathematical modeling based on the diffusion theory (mass and heat balance equations) written in prolate spheroidal coordinates was derived and the importance of this procedure on the analysis of the drying process of wet porous solid, is also presented. Results pointed to the behavior of the moisture migration and heating of the solid with different aspect ratio. Solids with higher area/volume relationships dry and heat faster.

scholarly journals Drying kinetics and microbiological quality of green onions

Revista CERES ◽  
2016 ◽  
Vol 63 (6) ◽  
pp. 769-774
Author(s):  
Ana Paula Martinazzo ◽  
Luiz Carlos Correa Filho ◽  
Carlos Eduardo de Souza Teodoro ◽  
Pedro Amorim Berbert
Keyword(s):  
Mathematical Modeling ◽  
Microbiological Quality ◽  
Agricultural Products ◽  
Allium Fistulosum ◽  
Drying Process ◽  
Excess Production ◽  
High Yields ◽  
Page Equation ◽  
Best Fit

ABSTRACT Green onion (Allium fistulosum L.) is widely consumed and traded in Brazil as condiment. Because of the high yields in the region of Volta Redonda - RJ and the alternative of drying as a method for preserving the excess production, the objective of this study was to evaluate the drying process of green onions, considering the microbiological quality, and to develop the mathematical modeling of this process. Mathematical models to describe the drying of agricultural products were used to predict the phenomenon. The modified Page equation gave the best fit to the data. Microbiological quality was evaluated using the analysis of aerobic mesophilic bacteria, molds and yeasts. Dehydration at 60 ºC was the most indicated for green onions, with assured microbiological quality.

Mathematical Modeling of the Drying Process of Chrome Shavings

2015 ◽  
Vol 1101 ◽  
pp. 463-466
Author(s):  
Juan Carlos Beltrán-Prieto ◽  
Nguyen Huynh Bach Son Long ◽  
Karel Kolomazník
Keyword(s):  
Mathematical Modeling ◽  
Laplace Transformation ◽  
Deterministic Model ◽  
Separation Of Variables ◽  
Effective Diffusion ◽  
Water Molecules ◽  
Drying Process ◽  
Tunnel Dryer ◽  
Free Moisture ◽  
Modeling Data

This paper described the mathematical modeling of chrome shavings drying by performing a microscopic balance for water content to describe the unidimensional transfer of water within the solid at a certain temperature. The deterministic model was solved using Laplace transformation and separation of variables methods in order to determine the average free moisture content at different intervals of time during the drying period. Agreement was observed between both, experimental and modeling data. The effective diffusion coefficient of water molecules during the drying of chrome shavings in a tunnel dryer was determined to be 5.8x10-6m2/h.

scholarly journals Physical-mathematical modeling of vibrating conveyor drying process of soybeans

2020 ◽  
Author(s):  
Serhii Kiurchev ◽  
Valentuna Verkholantseva ◽  
Lyidmila Kiurcheva ◽  
Oleksandr Dumanskyi
Keyword(s):  
Mathematical Modeling ◽  
Drying Process
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