Non-Newtonian particulate flow simulation: A direct-forcing immersed boundary–lattice Boltzmann approach

2016 ◽  
Vol 447 ◽  
pp. 1-20 ◽  
Author(s):  
A. Amiri Delouei ◽  
M. Nazari ◽  
M.H. Kayhani ◽  
S.K. Kang ◽  
S. Succi
Keyword(s):  
Lattice Boltzmann ◽  
Flow Simulation ◽  
Particulate Flow ◽  
Immersed Boundary ◽  
Direct Forcing

Particulate Flow Simulation by the Immersed Boundary Lattice Boltzmann Method

2011 ◽  
Author(s):  
Takeshi Seta
Keyword(s):  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Flow Simulation ◽  
Correction Method ◽  
Body Motion ◽  
Immersed Boundary ◽  
Cylindrical Couette Flow ◽  
Direct Forcing ◽  
Boltzmann Method ◽  
Direct Forcing Method

We demonstrate the applicability of the immersed boundary lattice Boltzmann method (IB-LBM) based on the implicit correction method to the simulation of rigid body motion in a viscous fluid and to the natural convection calculation. We compare the accuracy of the IB-LBM based on the implicit correction method with one of the IB-LBM based on the direct forcing method that eliminates the necessity of the determination of free parameters. In the simulations of the cylindrical Couette flow and of the heat transfer between two concentric cylinders, the implicit correction method indicates the first-order accuracy in the number of Lagrangian points. The accuracy of the IB-LBM based on the direct forcing method is independent of the number of the boundary points. The IB-LBM based on the implicit correction method is more accurate than one based on the direct forcing method.

Immersed Boundary – Thermal Lattice Boltzmann Methods for Non-Newtonian Flows Over a Heated Cylinder: A Comparative Study

2015 ◽  
Vol 18 (2) ◽  
pp. 489-515 ◽  
Author(s):  
A. Amiri Delouei ◽  
M. Nazari ◽  
M. H. Kayhani ◽  
S. Succi
Keyword(s):  
Lattice Boltzmann ◽  
Computational Cost ◽  
Shear Thickening ◽  
The Body ◽  
Sharp Interface ◽  
Immersed Boundary ◽  
Heated Cylinder ◽  
Hydrodynamic Approach ◽  
Direct Forcing ◽  
Thermal Lattice Boltzmann

AbstractIn this study, we compare different diffuse and sharp interface schemes of direct-forcing immersed boundary — thermal lattice Boltzmann method (IB-TLBM) for non-Newtonian flow over a heated circular cylinder. Both effects of the discrete lattice and the body force on the momentum and energy equations are considered, by applying the split-forcing Lattice Boltzmann equations. A new technique based on predetermined parameters of direct forcing IB-TLBM is presented for computing the Nusselt number. The study covers both steady and unsteady regimes (20<Re<80) in the power-law index range of 0.6<n<1.4, encompassing both shear-thinning and shear-thickening non-Newtonian fluids. The numerical scheme, hydrodynamic approach and thermal parameters of different interface schemes are compared in both steady and unsteady cases. It is found that the sharp interface scheme is a suitable and possibly competitive method for thermal-IBM in terms of accuracy and computational cost.

Fully Resolved Simulation of Particulate Flow Using a Sharp Interface Direct Forcing Immersed Boundary Method

2013 ◽  
Author(s):  
Jianming Yang ◽  
Frederick Stern
Keyword(s):  
Immersed Boundary Method ◽  
Solid Particles ◽  
Sharp Interface ◽  
Particulate Flow ◽  
Immersed Boundary ◽  
Fluid Structure ◽  
Boundary Method ◽  
Direct Forcing ◽  
Fully Resolved Simulation ◽  
Predictor Corrector

In this paper, the sharp interface, direct forcing immersed boundary method developed by Yang and Stern (A simple and efficient direct forcing immersed boundary framework for fluid-structure interactions, J. Comput. Phys. 231 (2012) 5029–5061) is applied to the fully resolved simulation of particulate flow. This method uses a discrete forcing approach and maintains a sharp profile of the fluid/solid interface. Also, it employs a strong coupling scheme for fluid-structure interaction through a predictor-corrector algorithm. The fluid flow solver is not included in the predictor-corrector iterative loop thanks to the direct forcing idea, which makes the overall algorithm highly efficient and very attractive for the fully resolved simulation of particulate flow with numerous solid particles. Several cases including sedimenting and buoyant particles and the interaction of two sedimenting particles showing kissing, drafting, and tumbling phenomenon are examined and compared with the reference results to demonstrate the simplicity and applicability of our method in particulate flow simulations.

Inclusion of Heat Transfer on Settling Behavior of Elliptical Particles: Immersed Boundary-Thermal Lattice Boltzmann Method

2019 ◽  
Author(s):  
Sajjad Karimnejad ◽  
Amin Amiri Delouei ◽  
Mohsen Nazari ◽  
Mohammad Mohsen Shahmardan ◽  
Goodarz Ahmadi ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Immersed Boundary ◽  
Complementary Method ◽  
Elliptical Particles ◽  
Direct Forcing ◽  
Boltzmann Method ◽  
Thermal Lattice Boltzmann ◽  
Settling Behavior

Abstract In this study, the hybrid immersed boundary-thermal lattice Boltzmann method was developed and applied to assess the inclusion of heat transfer in flows containing non-circular particles. The direct forcing/heating immersed boundary method was used for determining the hydrodynamic forces and energy exchange. A complementary method was also implemented to treat non-circularity. The accuracy of the computational model and the employed complementary method were properly validated. Two cases for the falling ellipse were considered. A set of comprehensive simulations were performed and the effects of geometry, Grashof number, repulsive force, and heat transfer were analyzed. The findings of this study would be useful for a better understanding of settling non-circular particles in a thermal field.

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