Magnetohydrodynamic blood flow study in stenotic coronary artery using lattice Boltzmann method. (June 2022)

• Record Type: Journal Article
• Authors: Cherkaoui, Ikram; Bettaibi, Soufiene; Barkaoui, Abdelwahed; Kuznik, Frédéric
• Is Part Of: Computer methods and programs in biomedicine. Volume 221(2022)
• Publication Date: 2022-06
• Subjects: Lattice Boltzmann approach -- Blood flow -- Magnetic field -- Stenosis magnetohydrodynamic MHD; Medicine -- Computer programs -- Periodicals; Biology -- Computer programs -- Periodicals; Computers -- Periodicals; Medicine -- Periodicals; Médecine -- Logiciels -- Périodiques; Biologie -- Logiciels -- Périodiques; Biology -- Computer programs; Medicine -- Computer programs; Periodicals; Electronic journals; 610.28
• DOI: 10.1016/j.cmpb.2022.106850
• Languages: English
• ISSNs: 0169-2607

Abstract

Highlights: Numerical study of magnetohydrodynamic blood flow in stenotic artery using a new mesoscopic approach. Double population lattice Boltzmann model (LBM) is proposed. Lattice Boltzmann method is used to solve both velocity and magnetic field. The proposed model has been validated numerically and experimentally with previous works. The impact of high magnetic field on blood flow throughout the artery using the proposed LBM model has been studied. Abstract: Background and objective : Cardiovascular diseases such as atherosclerosis are the first engender of death in the world. The malfunctioning of cardiovascular system is attributed mainly to hemodynamics. However, blood magnetic properties are of major haemodynamic interest, with significant clinical applications. The aim of this work is to study numerically the effect of high magnetic field on blood flow in stenotic artery. Methods : In this paper, a double population D 2 Q 9 lattice Boltzmann model is proposed. Velocity and magnetic field are both solved using Lattice Boltzmann method with single relaxation time. Blood is considered homogeneous and Newtonian bio-magnetic fluid. The results of the proposed model are compared and validated by recent numerical and experimental studies in the literature and show good agreement. In this study, simulations are carried out for both hydrodynamics and magneto-hydrodynamics. For the magneto-hydrodynamic case, five values of Hartmann number of 10, 30, 50, 75 and 100 at Reynolds number of 400, 600 and 800 are investigated Results : The results show that velocity and recirculation zone increase with the increase of the degree of stenosis and Reynolds number. In addition, a considerable decrease in velocity, recirculation zones and pressure drop across the stenotic artery is noticed with the increase of Hartmann number. Conclusion : The suggested model is found to be effective and accurate in the treatment of magneto-hydrodynamic blood flow in stenotic artery. The found results can be used by clinicians in the treatment of certain cardiovascular disorders and in regulating blood flow movement, especially during surgical procedures.