00921nas a2200181   4500000000100000000000100001008004100002260005000043100001200093700001200105700002400117700002200141700001400163700001300177245012500190300001400315520041000329       2014                            d  bSpringer International Publishing Switzerland1 aT. Nycz1 aM. Nycz1 aTadeusz Czachórski1 aAndrzej Kwiecień1 aPiotr Gaj1 aP. Stera00aA Numerical Comparison of Diffusion and Fluid-Flow Approximations Used in Modelling Transient States of TCP/IP Networks.  a213–2223 aThe paper presents a comparison of two approaches to queuing models used in performance evaluation of computer networks: diffusion approximation and fluid-flow approximation. Both methods are well known and are used alternatively in similar problems but the differences between their results and the errors they introduce when applied to TCP driven time dependent flows were not sufficiently investigated.