“…Recently several theoretical and experimental investigations have been perfonned to study the blood flow characteristics due to the presence of a stenosis in the arterial lumen of a blood vessel (Sankar and Hemalatha, 2006;MandaI, 2005;Marshall, 2004;Moayeri and Zendehbudi, 2003;Liu et aI., 2004;Bakirtas and Antar, 2003;Long et aI., 2001;Segers and Verdonck, 2000). Since, the blood flow through narrow arteries is highly pulsatile, more attempts have been made to study the pulsatile flow of blood treating blood as a Newtonian fluid (Long et aI., 2001;Dash et aI., 1999;Moayeri and Zendehbudi, 2003;Liu et aI., 2004;Chakravarthy and MandaI, 2000).…”