Simulating the DISAMATIC process using the discrete element method — a dynamical study of granular flow

Hovad, Emil; Spangenberg, Jon; Larsen, P.; Walther, Jens Honoré; Thorborg, Jesper; Hattel, Jesper Henri

doi:10.1016/j.powtec.2016.09.039

Cited by 7 publications

(13 citation statements)

References 18 publications

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“…The framework of [11] is applied in this work where the commercially available software of STAR-CCM+ [20] is used for simulating the DISAMATIC process.…”

Section: Granular Flow: Discrete Element Methodsmentioning

confidence: 99%

“…Uni-axial compression tests were made for green sand and the stress-strain curves were analysed in [10]. Green sand was tested with a ring shear tester obtaining the yield locus and a sand pile experiment in [11].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The model applied a constant particle inlet velocity and particle diameters of 2 mm and 4 mm as representative sand particle clusters for the granular flow. In [11] the same geometry was investigated with a 2-D and 3-D DEM slice model applying the representative particle cluster diameter of 2 mm. A 2-D sensitivity study was performed with respect 3…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…In this study the framework of [11] is applied for calibrating the DEM model using a ring shear tester to obtain the static friction coefficients and a sand pile experiment for calibrating the rolling resistance and cohesion value for the particle-particle interaction. Additionally the mass of the DEM particle is recalculated and a slump experiment is used for calibrating the rolling resistance for the particle-wall interaction.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

“…rij is the unit normal vector, v nij is the relative normal velocity and δ ij is the normal overlap. N nij is the normal non-linear damping coefficient, F cohij is the cohesion, K n is the stiffness in the normal direction, N nij is the damping in the normal direction, for further details see [11]. The particle-particle constant cohesion force in the normal direction is,…”

Section: Contact Notationmentioning

confidence: 99%

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Cavity prediction in sand mould production applying the DISAMATIC process

et al. 2017

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The sand shot in the DISAMATIC process is simulated by the discrete element method (DEM) taking into account the influence and coupling of the airflow with computational fluid dynamics (CFD). The DEM model is calibrated by a ring shear test, a sand pile experiment and a slump test. Subsequently, the DEM model is used to model the propagation of the green sand inside the mold chamber and the results are compared to experimental video footage. The chamber contains two cavities designed to quantify the deposited mass of green sand. The deposition of green sand in these two cavities is investigated with three cases of different air vent settings which control the ventilation of the chamber. These settings resulted in different air-and particle-velocities as well as different accumulated masses in the cavities, which were successfully simulated by the model.

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“…The framework of [11] is applied in this work where the commercially available software of STAR-CCM+ [20] is used for simulating the DISAMATIC process.…”

Section: Granular Flow: Discrete Element Methodsmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted M Manuscriptmentioning

confidence: 99%

Section: Contact Notationmentioning

confidence: 99%

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