Analysis and DEM simulation of granular material flow patterns in hopper models of different shapes

Balevičius, Robertas; Kačianauskas, Rimantas; Mróz, Z.; Sielamowicz, Irena

doi:10.1016/j.apt.2010.12.005

Cited by 90 publications

(34 citation statements)

References 29 publications

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“…Gonzalez-Montanello et al [15], Masson and Martinez [30] predicted that with help of discrete models exact pressure distribution in a silo can be determined and analyzed; thus design process of these equipment can be simplified. DEM also can be used to analyze flow patterns [18,19,27], segregations [21], discharge rate [14,15,17,28] and influence of flow-correction inserts [28] in case of silos. It can be seen that applicability of discrete element method is very wide; even can be used to design nuclear reactors [31], moreover to optimize cooking process and kitchen robots [23].…”

Section: Modeling Methodsmentioning

confidence: 99%

“…In this paper the applicability of DEM model in case of mass flow and funnel flow is examined. Our numerical discharge model was created with a modification of other works [14][15][16][17][18][19] then it was validated with laboratory experiments, finally the numerical results were compared with analytical and experimental results. Both of the simulations and outflow measurements were carried out with wheat.…”

Section: Introductionmentioning

confidence: 99%

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Extension of silo discharge model based on discrete element method

Oldal

Safranyik

2015

J Mech Sci Technol

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Silos are containers used by almost all fields of industry for storing granular materials and generally classified in two types: mass flow and funnel flow. One of the most important design parameter of these equipment is the discharge rate which depends on the flow mode. There are high numbers of analytical and empirical models used for determine this parameter, however none of them is suitable for both flow modes; moreover the accuracy of mass flow models is not acceptable. Recently a few numerical discharge models are made for certain geometries; but the applicability of these models in case of different flow modes was not examined. Aim of our work is the creation of an experimentally validated numerical discharge model based on others work and examination of this in term of different flow modes. We prove that our modified model is suitable for determine silos discharge rate independently from flow mode.

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Section: Modeling Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Extension of silo discharge model based on discrete element method

Oldal

Safranyik

2015

J Mech Sci Technol

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“…Some other research groups developed applications to agricultural silos and hoppers such as Horabik (Sykut et al, 2008;Parafiniuk et al, 2013), Ayuga , 2012b, Coetzee (Coetzee and Els, 2009). Other researchers have made applications to silos and hoppers in other engineering fields like Ooi (Holst et al, 1999;Ooi, 2008, 2012), Martínez (Masson et al, 2003) or Sielamowicz (Balevičius et al, 2011) (Figure 4). DEM has also been used in other fields besides silos and hoppers, such as some infrastructure problems involving handling of soils or rocks.…”

Section: Discrete Element Methods In Buildings and Infrastructures Arementioning

confidence: 99%

Present and future of the numerical methods in buildings and infrastructures areas of biosystems engineering

Ayuga

2015

J Agricult Engineer

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Biosystem engineering is a discipline resulting from the evolution of the traditional agricultural engineering to include new engineering challenges related with biological systems, from the cell to the environment. Modern buildings and infrastructures are needed to satisfy crop and animal production demands. In this paper a review on the status of numerical methods applied to solve engineering problems in the field of buildings and infrastructures in biosystem engineering is presented. The history and basic background of the finite element method is presented. This is the first numerical method implemented and also the more developed one. The history and background of other two more recent methods, with practical applications, the computer fluids dynamics and the discrete element method are also presented. Besides, a review on the scientific and professional applications on the field of buildings and infrastructures for biosystem engineering needs is presented. Today we can simulate engineering problems with solids, engineering problems with fluids and engineering problems with particles and get to practical solutions faster and cheaper than in the past. The paper encourages young engineers and researchers to make progress these tools and their engineering applications. The capacities of all numerical methods in their present development status go beyond the present practical applications. There is a broad field to work on it. IntroductionThe present paper is a review of the numerical methods at present and their applications in solving engineering problems. The field is too wide to be considered in a single article. This is why the paper focuses on presenting the fundamentals of the most significant numerical methods that can be applied for buildings and infrastructures areas of biosystems engineering. The three next numerical methods will be considered: i) finite element method (FEM); ii) computer fluid dynamics (CFD); iii) discrete element method (DEM).In the paper the main features of these methods will be presented along with showing some examples in areas of biosystems engineering. Modern engineering can be considered to begin with the industrial revolution in the late eighteenth and early nineteenth century. From the very beginning, it has used the most powerful mathematical tools of the time in order to solve problems arising in practice. It was considered a fact that it was essential acquiring solid mathematical foundations for being a good engineer. The programs of studies from all Universities of the time prove it so. Even great figures on mathematics of the nineteenth and twentieth centuries were formally engineers. This symbiosis has produced good results for society. In the second half of XX Century, the fast development of computer science produced a great advance in numerical methods applied to physics and engineering.Based on this premise, the predictable future is that calculation and structural analysis in all fields of engineering will be based on modern numerical methods. This power...

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“…(2)-(8)) for calculating the motion of particles in the acoustic field is similar to the model used in the standard discrete element method (e.g. [32,33]). However, (a) no contact forces are calculated there and (b) long-range forces (F d ; F MRPE ) should be calculated in contrast to the standard DEM.…”

Section: A Theoretical Modelmentioning

confidence: 99%