Performance Analysis of the Lattice Boltzmann Model Beyond Navier-Stokes

Randles, Amanda; Kale, Vivek; Hammond, Jeff R.; Gropp, William; Kaxiras, Efthimios

doi:10.1109/ipdps.2013.109

Cited by 50 publications

(26 citation statements)

References 23 publications

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“…3). Simu lations were performed using HARVEY, a massively parallel com putational fluid dynamics solver (27,28), which used 3D rendered versions of the in vitro device, to compare computational calcula tions to experimental velocity measurements obtained by PIV. Good qualitative agreement was observed between predicted and experi mentally determined flow patterns for both endothelialized and acellular vessels (Fig.…”

Section: The Flow Characterization Of a Vessel Having An Endothelium mentioning

confidence: 99%

Examining metastatic behavior within 3D bioprinted vasculature for the validation of a 3D computational flow model

et al. 2020

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Understanding the dynamics of circulating tumor cell (CTC) behavior within the vasculature has remained an elusive goal in cancer biology. To elucidate the contribution of hydrodynamics in determining sites of CTC vascular colonization, the physical forces affecting these cells must be evaluated in a highly controlled manner. To this end, we have bioprinted endothelialized vascular beds and perfused these constructs with metastatic mammary gland cells under physiological flow rates. By pairing these in vitro devices with an advanced computational flow model, we found that the bioprinted analog was readily capable of evaluating the accuracy and integrated complexity of a computational flow model, while also highlighting the discrete contribution of hydrodynamics in vascular colonization. This intersection of these two technologies, bioprinting and computational simulation, is a key demonstration in the establishment of an experimentation pipeline for the understanding of complex biophysical events.

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Section: The Flow Characterization Of a Vessel Having An Endothelium mentioning

confidence: 99%

Examining metastatic behavior within 3D bioprinted vasculature for the validation of a 3D computational flow model

et al. 2020

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“…Blood flow was simulated with HARVEY, a massively parallel hemodynamics application . HARVEY implements the LBM, a mesoscopic solver for the Navier‐Stokes equations .…”

Section: Methodsmentioning

confidence: 99%

Suitability of lattice Boltzmann inlet and outlet boundary conditions for simulating flow in image‐derived vasculature

Feiger

Vardhan

Gounley

et al. 2019

Numer Methods Biomed Eng

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The lattice Boltzmann method (LBM) is a popular alternative to solving the Navier-Stokes equations for modeling blood flow. When simulating flow using the LBM, several choices for inlet and outlet boundary conditions exist. While boundary conditions in the LBM have been evaluated in idealized geometries, there have been no extensive comparisons in image-derived vasculature, where the geometries are highly complex. In this study, the Zou-He (ZH) and finite difference (FD) boundary conditions were evaluated in image-derived vascular geometries by comparing their stability, accuracy, and run times. The boundary conditions were compared in four arteries: a coarctation of the aorta, dissected aorta, femoral artery, and left coronary artery. The FD boundary condition was more stable than ZH in all four geometries. In general, simulations using the ZH and FD method showed similar convergence rates within each geometry. However, the ZH method proved to be slightly more accurate compared with experimental flow using three-dimensional printed vasculature. The total run times necessary for simulations using the ZH boundary condition were significantly higher as the ZH method required a larger relaxation time, grid resolution, and number of time steps for a simulation representing the same physiological time. Finally, a new inlet velocity profile algorithm is presented for complex inlet geometries. Overall, results indicated that the FD method should generally be used for large-scale blood flow simulations in image-derived vasculature geometries. This study can serve as a guide to researchers interested in using the LBM to simulate blood flow. KEYWORDS boundary conditions, finite difference, hemodynamics, image-derived vasculature, lattice Boltzmann method, Zou-He Int J Numer Meth Biomed Engng. 2019;35:e3198.wileyonlinelibrary.com/journal/cnm

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“…Additionally, WSS profiles were calculated along the aneurysm boundary arc length for varying H A /W A and Re (100 and 400). We applied HARVEY, [17][18][19] a massively parallel CFDs code, which implements the lattice Boltzmann method (LBM) for simulations of flow in 3D (realistic and idealized) geometries. LBM is a deterministic, mesoscopic alternative approach to numerically solve the Navier-Stokes equations governing fluid flows.…”

Section: Computational Modelingmentioning

confidence: 99%

“…s a is applied to compute transverse WSS using the time independent version of the definition in Peiffer et al 26 Further details about the numerical implementation, parallelization, and scaling of HARVEY can be found in Ref. [17][18][19]. Simulations were conducted with HARVEY at 100 lm resolution (time step of 0.000058).…”

Section: Computational Modelingmentioning

confidence: 99%

Impact of diversity of morphological characteristics and Reynolds number on local hemodynamics in basilar aneurysms

et al. 2018

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Morphological and hemodynamic parameters have been suggested to affect the rupture of cerebral aneurysms, but detailed mechanisms of rupture are poorly understood. The purpose of our study is to determine criteria for predicting the risk of aneurysm rupture, which is critical for improved patient management. Existing aneurysm hemodynamics studies generally evaluate limited geometries or Reynolds numbers (Re), which are difficult to apply to a wide range of patient‐specific cases. Association between hemodynamic characteristics and morphology is focused. Several two‐dimensional (2D) and three‐dimensional (3D) idealized and physiological geometries is assessed to characterize the hemodynamic landscape between flow patterns. The impact of morphology on velocity and wall shear stress (WSS) profiles were evaluated. Slight changes in aneurysm geometry is found or Re result in significant changes in the hemodynamic and WSS profiles. Our systematic mapping and nondimensional analysis qualitatively identify hemodynamic conditions that may predispose aneurysms to rupture. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2792–2802, 2018

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Performance Analysis of the Lattice Boltzmann Model Beyond Navier-Stokes

Cited by 50 publications

References 23 publications

Examining metastatic behavior within 3D bioprinted vasculature for the validation of a 3D computational flow model

Examining metastatic behavior within 3D bioprinted vasculature for the validation of a 3D computational flow model

Suitability of lattice Boltzmann inlet and outlet boundary conditions for simulating flow in image‐derived vasculature

Impact of diversity of morphological characteristics and Reynolds number on local hemodynamics in basilar aneurysms

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