OSAMOAL: Optimized Simulations by Adapted MOdels using Asymptotic Limits Anne-Céline Boulanger, Clément Cancès, Hélène Mathis, Khaled Saleh and Nicolas Seguin ESAIM: Proc., 38 (2012) 183-201 Published online: 03 January 2013 DOI: 10.1051/proc/201238010