Dissipative particle dynamics simulation for the density currents of polymer fluids Yanggui Li, Xingguo Geng, Zhijun Liu, Qingsheng Liu and Jie Ouyang Eur. Phys. J. Plus, 131 11 (2016) 388 Published online: 07 November 2016 DOI: 10.1140/epjp/i2016-16388-7