Journal of Applied Fluid Mechanics1735-357216320230301Analysis of Blood Flow Bifurcation Phenomena in Mitral Valve: A Numerical Approach to Predict Cardiac Arrest491504216010.47176/jafm.16.03.1351ENS. SahaDivision of Mathematics, School of Advanced Sciences, Vellore Institute of Technology Chennai, Tamilnadu-600127,
IndiaP. BiswasDepartment of Mathematics, National Institute of Technology Silchar, Silchar-788010, Assam, IndiaA. N. DasDepartment of Mathematics, Alipurduar University, Alipurduar, West Bengal-736121, IndiaA. KumarDivision of Mathematics, School of Advanced Sciences, Vellore Institute of Technology Chennai, Tamilnadu-600127, IndiaM. Kumar SinghDivision of Mathematics, School of Advanced Sciences, Vellore Institute of Technology Chennai, Tamilnadu-600127, IndiaJournal Article20220606Employing FVM, we have investigated numerically the rheological behavior of bifurcation phenomena of blood flow at various Reynolds numbers (<em>Re</em>) and at various values of contraction ratio (<em>h</em>), defined as the ratio of the inlet to narrow sections width of a two-dimensional planner contraction-expansion channel. Blood flow bifurcation through a planar contraction-expansion channel is analogous to the case of regurgitation (i.e., abnormal leakage of blood) in the mitral valve. In this work, we have studied the blood flow bifurcation characteristics including the normalized axial velocity profile, velocity gradient, dimensionless pressure, dimensionless longitudinal pressure gradient, pressure and skin friction coefficients on both the channel walls and analyzed the pressure drop, excess pressure drop for different values of <em>Re</em>. Secondly, blockage in the mitral valve is studied for different values of <em>h</em>. Pressure drops for various values of h are also studied to measure blood pressure. Correlation analyses are presented for normalized vortex length in terms of critical values of <em>Re</em> and <em>h</em>. It is revealed that if <em>Re</em> goes on increasing to 14.4 or more, flow breaks the symmetry at <em>h </em>= 15, and for each , recirculation length increases linearly with the increase in <em>Re</em> but decreases valve flaps that reduce blood flow to the heart muscles.https://www.jafmonline.net/article_2160_cf7030173633addffa3f31e3bafb6ae3.pdf