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Keywords: computational fluid dynamics
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Journal Articles
Article Type: Technical Briefs
J Biomech Eng. November 2022, 144(11): 114501.
Paper No: BIO-21-1281
Published Online: June 16, 2022
... = computer-aided design CFD = computational fluid dynamics FEA = finite element analysis GPU = graphical processing unit OSI = oscillatory shear index Re = Reynolds number STL = stereolithography WSS = wall shear stress References [1] Fåhræus , R...
Journal Articles
Article Type: Research-Article
J Biomech Eng. September 2022, 144(9): 091006.
Paper No: BIO-21-1387
Published Online: March 30, 2022
...Ayat Nada; Mahmoud A. Fakhr; Mohamed Tarek I. El-Wakad; Mohammed A. Hassan This research aimed to examine the impact of a proposed flow stent (PFS) on different abdominal artery shapes. For that purpose, a finite element-based model using the computational fluid dynamics (CFD) method is developed...
Journal Articles
Article Type: Research-Article
J Biomech Eng. June 2022, 144(6): 061002.
Paper No: BIO-21-1362
Published Online: February 15, 2022
... topological skeleton. Computational fluid dynamics (CFD) simulations were performed in three stented human coronary artery geometries reconstructed from clinical images. The selected cases presented stents with different designs (i.e., two contemporary drug-eluting stents and one bioresorbable scaffold...
Includes: Supplementary data
Journal Articles
Article Type: Research-Article
J Biomech Eng. May 2021, 143(5): 051011.
Paper No: BIO-20-1056
Published Online: March 8, 2021
... is unclear. Idealized LM coronary arteries with 34 different intermediate stenoses were created and categorized (Medina) as single and multiple lesion groups. Computational fluid dynamics modeling was performed with physiologic boundary conditions using an open-source software ( simvascular 1 ) to solve...
Journal Articles
Article Type: Research-Article
J Biomech Eng. May 2021, 143(5): 051003.
Paper No: BIO-20-1201
Published Online: March 4, 2021
... fluid (CSF) near the foramen magnum (FM). We used computational fluid dynamics (CFD) to compute patient-specific resistance to CSF motion in the spinal canal for CMI patients to determine its accuracy in predicting CAH. Fifty-one symptomatic CMI patients with cerebellar tonsillar position (CTP) ≥ 5 mm...
Journal Articles
Article Type: Research-Article
J Biomech Eng. March 2021, 143(3): 031013.
Paper No: BIO-20-1107
Published Online: January 22, 2021
... or different regarding their impacts on coronary hemodynamics. The purpose of this study was to compare the hemodynamic effects of coronary stenosis and MB using experimental and computational fluid dynamics (CFD) approaches. For CFD modeling, three MB patients with different levels of lumen obstruction, mild...
Includes: Supplementary data
Journal Articles
Article Type: Research-Article
J Biomech Eng. March 2021, 143(3): 031009.
Paper No: BIO-20-1247
Published Online: December 10, 2020
... coiling (SAC). Therefore, we performed computational fluid dynamics (CFD) analysis of the blood flow in four bifurcation aneurysms focusing on the stent healing period found in SAC as a two-step maneuver. Our results show that by changing the local vasculature, the intra-aneurysmal hemodynamics changes...
Journal Articles
Article Type: Research-Article
J Biomech Eng. January 2021, 143(1): 011009.
Paper No: BIO-19-1304
Published Online: October 8, 2020
... by computational fluid dynamics (CFD) simulations has become conventional, convergence of hemolysis calculations is also essential. In this paper, convergence of the power-law hemolysis model is compared for simple flows, including pathlines with exponentially increasing and decreasing stress, in gradually...
Journal Articles
Article Type: Research-Article
J Biomech Eng. January 2021, 143(1): 011002.
Paper No: BIO-19-1356
Published Online: September 30, 2020
... and personalized dosimetry. Computational fluid dynamics (CFD) simulations were performed in a 3D hepatic arterial tree model segmented from cone-beam CT angiographic data obtained from a patient with hepatocellular carcinoma (HCC). The microsphere trajectories were predicted from the velocity field. 90 Y dose...
Includes: Supplementary data
Journal Articles
Article Type: Research-Article
J Biomech Eng. September 2020, 142(9): 091002.
Paper No: BIO-18-1496
Published Online: April 13, 2020
... in computational fluid dynamics (CFD) simulations of veins with CVCs. In this study, blood was assumed to be an incompressible, laminar, homogeneous, and non-Newtonian fluid, and the corresponding governing equations are given as follows: (1) ρ d u d t = − ∇ p + μ Δ u (2) ∇ ⋅ u...
Journal Articles
Article Type: Research-Article
J Biomech Eng. January 2020, 142(1): 011010.
Paper No: BIO-18-1404
Published Online: October 1, 2019
... of the metamodel and in vivo measured pressure drops, the mean bias (−0.2 ± 13.7 mmHg) and the coefficient of determination (R 2 = 0.80) were as good as of the original 2D computational fluid dynamics (CFD) model. UQ results of the 2D and metamodel were comparable. Estimation of the uncertainty interval using...
Journal Articles
Article Type: Research-Article
J Biomech Eng. November 2019, 141(11): 111002.
Paper No: BIO-18-1204
Published Online: July 30, 2019
... dissection and demonstrates that the coverage of LSA has a considerable impact on the important hemodynamic parameters. aortic dissection thoracic endovascular aortic repair left subclavian artery coverage computational fluid dynamics fluid–structure interaction Windkessel model Aortic...
Journal Articles
Article Type: Technical Briefs
J Biomech Eng. October 2019, 141(10): 104501.
Paper No: BIO-18-1280
Published Online: July 15, 2019
... in a patient-specific aorta to investigate mixing and dispersion of contrast in the aortic arch (AA) and to compare the TDCs in the coronary ostium and the descending aorta. Here, we examine the validity of the use of TDC in the descending aorta as a surrogate for the AIF. Computational fluid dynamics (CFD...
Journal Articles
Article Type: Research-Article
J Biomech Eng. October 2019, 141(10): 101002.
Paper No: BIO-18-1058
Published Online: July 11, 2019
... to disturbances affecting the transvalvular blood flow, which could hamper the correct measurement of peak velocities. Such disturbances would characterize highly asymmetric stenotic configurations of the BMV. To test this hypothesis, we exploited computational fluid-dynamic (CFD) analyses, which allow...
Journal Articles
Article Type: Research-Article
J Biomech Eng. June 2019, 141(6): 061001.
Paper No: BIO-17-1599
Published Online: April 22, 2019
...Digvijay S. Rawat; Mathieu Pourquie; Christian Poelma Computational fluid dynamics (CFD) is a powerful method to investigate aneurysms. The primary focus of most investigations has been to compute various hemodynamic parameters to assess the risk posed by an aneurysm. Despite the occurrence...
Journal Articles
Article Type: Research-Article
J Biomech Eng. March 2015, 137(3): 031002.
Paper No: BIO-13-1410
Published Online: March 1, 2015
...% TE in the pulsatile simulations, warranting further studies to improve the mathematical model and experimental validation. computational fluid dynamics blood flow drug targeting nanoparticles controlled release Targeted drug delivery is a technique of delivering drugs to specific...
Journal Articles
Article Type: Research-Article
J Biomech Eng. August 2014, 136(8): 081003.
Paper No: BIO-13-1517
Published Online: June 2, 2014
..., and 1.49 mm versus 68 mm 2 , 0.22 N, and 1.01 mm, respectively). Hemodynamics were simulated using computational fluid dynamics (CFD), with four cases for each patient-specific vein: (1) IVC only, (2) IVC with a placed filter, (3) IVC with a placed filter and model embolus, all at resting flow conditions...
Journal Articles
Article Type: Research-Article
J Biomech Eng. July 2014, 136(7): 071012.
Paper No: BIO-13-1526
Published Online: May 23, 2014
... near, and wall shear stress (WSS) distributions on, the exposed thrombus surfaces are calculated using computational fluid dynamics (CFD). Both the mean and maximum WSS on the exposed thrombus surfaces are much more dependent on thrombus topography than thrombus size, and the best predictors...
Journal Articles
Article Type: Research-Article
J Biomech Eng. June 2014, 136(6): 061006.
Paper No: BIO-13-1266
Published Online: May 6, 2014
... Intracranial Stenting and Computational Fluid Dynamics for Treatment Analysis ,” J. Biomech. , 46 ( 1 ), pp. 7 – 12 . 10.1016/j.jbiomech.2012.08.047 [14] Kim , M. , Taulbee , D. B. , Tremmel , M. , and Meng , H. , 2008 , “ Comparison of Two Stents in Modifying Cerebral Aneurysm...
Journal Articles
Article Type: Research-Article
J Biomech Eng. April 2014, 136(4): 041003.
Paper No: BIO-13-1247
Published Online: March 24, 2014
...] Castro , M. A. , Putman , C. M. , and Cebral , J. R. , 2006 , “ Computational Fluid Dynamics Modeling of Intracranial Aneurysms: Effects of Parent Artery Segmentation on Intra-Aneurysmal Hemodynamics ,” Am. J. Neuroradiol. , 27 ( 8 ), pp. 1703 – 1709 . [4] Sforza , D. M. , Putman...