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1 Introduction
The Gran-DEM particle flow simulator is a commercial particle flow DISCRETE ELEMENT METHOD (DEM) application that can be used to simulate particle flow in any type of pre-designed 3-D domain. This 3-D domain can be a mesh file (.msh) imported into the Gran-DEM application. The Gran-DEM application …
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2.1 Description and theory:
The LnE multiphase CFD simulator is a multipurpose tool for carrying out both Lagrangian (granular) and Eulerian (Fluid) flow simulations in various flexible combinations. The Eulerian (fluid) flow modelling is done by using the coupled pressure-velocity model that involves fundamentally the contin…
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2.2 Setting up:
On the Main UI ‘Select Model’ setting from the left pane. Under the continuous phase drop down menu election for the Eulerian fluid flow method can be made or set off.If Fixed field, single phase Eulerian or single phase External (Fluent) is selected the user can switch on the fluid heat transfer a…
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3.1 Description and theory:
The flow behaviour of materials is fundamentally characterised by their physical properties. Therefore, material properties of Eulerian fluids (liquid or gas) and Lagrangian particles (liquid or solid) during CFD flow simulations are extremely important while simulating system flow behavior. The Eu…
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5.1.3 Interphase drag force
The drag force is the force acting on particles due to fluid phase (gas or liquid) flowing around it. It is essentially the momentum transferred by the fluid phase due to friction when flowing passed the surface of the particle. This force typically can be modelled through a one way or a two-way co…
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7.1.1 Single phase Eulerian flow model:
∂∂tεmρm+∇∙εmρmu→m=Sm ( 8.1)Where, the suffix m denotes the mixture of all fluid species of a single phase in the system which are modeled as Eulerian continu…
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7.1.2 Single phase Eulerian energy model:
The individual fluid species modeled as scalar transport are given by;∂∂tεmρmCp,mTm+∇∙εmρmu→mCp,mTm=∇∙εmkm∇Tm-Sm,E ( 8.5)Where; Cp,m is the mean heat capacity and km is the mean thermal conductivity of mixture fluid belonging to …
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7.1.3 Single phase Eulerian species model:
The individual fluid species modeled as scalar transport are given by;∂∂tεmρmYi+∇∙εmρmu→mYi=Sm ( 8.1)The species mass fraction denoted by 𝑌𝑖 sum up to 1.0 fo…
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7.2 Setting up:
On the UI upper pane, select ‘Fluid flowsolver’. This gives the selection pane on the left pane to make fluid flowsolver model choices and settings as shown in Fig. 8.1.The selections include Method (compressible or incompressible), Scheme (implicit or explicit), viscosity (Laminar or any turbulenc…
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8.2 Setting up:
On the UI upper pane, select ‘Boundary condition’. This gives the selection pane on the left pane to make fluid flowsolver model choices and settings as shown in Fig. 8.1.The selections include Method (compressible or incompressible), Scheme (implicit or explicit), viscosity (Laminar or any turbule…
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11.1 Description and theory:
This selection on the left pane is used after a simulation run has completed and output result data is available for paraview post-processing and visualization study. On selecting this the middle pane appears as shown in Fig. 9.1. Here in this feature various data type files can be loaded into and …
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