To further understand the effect of flow conditions on nanoparticle location in block copolymers, we have performed coarse grained molecular dynamics simulations using dissipative particle dynamics (DPD) thermostat. We modeled and simulated the behavior of symmetric diblock copolymer/nanoparticle systems under simple shear flow. We considered three systems such that; a) NPs have selective interactions with one block, b) NPs have equal interactions with both blocks and c) NP-NP interactions are dominant. We find that shear has a significant effect on prevention of NP aggregation in cases where NP-NP attraction is dominant and this effect of shear is a strong function of both nanoparticle size and polymer chain length. These results qualitatively match with our experimental results on PS-b-PI/magnetite NP nanofibers.