نتایج جستجو برای: drying model

تعداد نتایج: 2125289  

2014
Simo Tagne Romain Remond Yann Rogaume André Zoulalian

We are modeling the drying of tropical woods in this work. Experimental measures are made on sapelle (Entandrophragma Cylindricum) and lotofa (Sterculia Rhinopetala) coming from Cameroon forest. A part of thermophysical parameters used is experimental obtained on each wood species and another is taking in the literature. Numerical simulations results of the drying of our wood samples give a goo...

2000
BRIAN J. SODEN STEVEN R. SCHROEDER

Multiple satellite records of tropical-mean water vapor are compared with a general circulation model (GCM) simulation to assess the ability to monitor and to predict low-frequency changes in total precipitable water. Particular attention is focused on the drying between 1979 and 1995 recorded by a TOVS statistical retrieval that is calibrated to radiosondes. Both a GCM integrated with observed...

2005
Renat Sadykov Dmitry Antropov Rauf Kafiatullin

On the basis of the developed approaches and mathematical model (MM) of the bioactive products drying block is carried out the optimization problem of the equipment choice and its operation modes in view of deleted binary mixture an ethanol water composition changes. The analysis of the problem with engaging of the Pontryagin’s maximum principle has revealed optimal control structure. There is ...

2001
O. ZIKANOV W. BOOS K. WOLKE A. THESS

The process of thermal Marangoni drying is considered, which has been recently proposed for use in semiconductor production. The process allows ultraclean drying of semiconductor wafer surfaces at the end of a sequence of wet operations. A theoretical model is presented, which incorporates the movement of a thin liquid film on the semiconductor surface, heat exchange between the semiconductor a...

2008
Andreas Nicolai

The influence and importance of the parameters of a comprehensive salt transport and phase transition model is investigated using simulations of drying experiments. First, the salt transport and phase transition model incorporated in the simulation program Delphin 5 is reviewed. Then, a discussion of simulations of drying experiments with brick materials saturated with salt solutions follows. T...

2012
D. Zare H. Naderi A. A. Jafari

Drying characteristics of rough rice (variety of lenjan) with an initial moisture content of 25% dry basis (db) was studied in a hot air dryer assisted by infrared heating. Three arrival air temperatures (30, 40 and 50C) and four infrared radiation intensities (0, 0.2 , 0.4 and 0.6 W/cm) and three arrival air speeds (0.1, 0.15 and 0.2 m.s) were studied. Bending strength of brown rice kernel, pe...

2017
Gernot Erber Franz Holzleitner Maximilian Kastner Karl Stampfer

Natural drying of fuel wood is a feasible option to increase resource efficiency in biomass based energy supply. Meteorological data based drying models are the state-of-the-art to monitor the drying progress. The continuous weighing approach is used to gain data for developing these models. The aim of this study was to investigate the drying performance of oak (Quercus L.) logs stored in piles...

Journal: :Physical review letters 2016
Andrea Fortini Ignacio Martín-Fabiani Jennifer Lesage De La Haye Pierre-Yves Dugas Muriel Lansalot Franck D'Agosto Elodie Bourgeat-Lami Joseph L Keddie Richard P Sear

In simulations and experiments, we study the drying of films containing mixtures of large and small colloidal particles in water. During drying, the mixture stratifies into a layer of the larger particles at the bottom with a layer of the smaller particles on top. We developed a model to show that a gradient in osmotic pressure, which develops dynamically during drying, is responsible for the s...

2014
Lauren Walker Wijitha Senadeera

An investigation of the drying of spherical food particles was performed, using peas as the model material. In the development of a mathematical model for drying curves, moisture diffusion was modelled using Fick’s second law for mass transfer. The resulting partial differential equation was solved using a forward-time central-space finite difference approximation, with the assumption of variab...

2005

A constitutive model is derived from theory of elasticity for predicting ultimate drying shrinkage of concrete. The model was extended by incorporating the semiempirical composite model proposed by Hirsch and Dougill for predicting Young's modulus of concrete. Their composite model is the geometric mean of Paul's upper and lower limit boundaries of a twophase composite. According to the shrinka...

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