en Production Planning & Control Production Planning & Control پژوهشي Research In this paper, we propose an iterated greedy algorithm for solving the blocking flow shop scheduling problem with total flow time minimization objective. The steps of this algorithm are designed very efficient. For generating an initial solution, we develop an efficient constructive heuristic by modifying the best known NEH algorithm. Effectiveness of the proposed iterated greedy algorithm is tested on the Taillard's instances. Computational results show the high efficiency of this algorithm with comparison state-of-the-art algorithms. We report new best solutions for 88 instances of 120 Taillard's instances. Constructive heuristic, Iterated greedy algorithm, Blocking flow shop, Total flow time 301 308 http://ijiepr.iust.ac.ir/browse.php?a_code=A-10-332-2&slc_lang=en&sid=1 Danial Khorasanian d.khorasanian@in.iut.ac.ir 180031947532846003137 180031947532846003137 No Student Ghasem Moslehi moslehi@in.iut.ac.ir 180031947532846003138 180031947532846003138 Yes Faculty