Numerical simulation of the fractional flow reserve (FFR) Keltoum Chahour, Rajae Aboulaich, Abderrahmane Habbal, Cherif Abdelkhirane and Nejib Zemzemi Math. Model. Nat. Phenom., 13 6 (2018) 57 Published online: 10 January 2019 DOI: 10.1051/mmnp/2018069