In　the　study,　a　mathematical　model　of　hybrid　nanofluids　was　established　with　the　consideration　of　nanoparticles　migration,　which　has　significant　influence　on　the　thermophysical　properties　of　hybrid　nanofluids.　In　order　to　investigate　heat　transfer　and　friction　factor　characteristics　of　hybrid　nanofluids　in　a　channel,　the　corresponding　governing　equations　were　solved　by　using　the　Runge-Kutta-Gill　method.　A　Performance　Evaluation　Criteria　(PEC)　was　used　to　assess　heat　transfer　performance　of　hybrid　nanofluids　under　identical　pumping　power.　Two　hybrid　nanofluids,　which　are　alumina-titania/water　nanofluid　and　alumina-zirconia/water　nanofluid,　respectively,　were　discussed.　The　results　clearly　indicated　that　alumina-titania/water　nanofluid　exhibits　higher　Nusselt　number　and　lower　friction　factor　than　alumina-zirconia/water　nanofluid.　Moreover,　it　has　been　found　that　with　the　variation　of　volume　fraction　ratio　of　two　single-particle　nanofluids,　maximum　PEC　values　of　alumina-titania/water　nanofluid　were　observed,　proving　that　alumina-titania/water　nanofluid　has　better　heat　transfer　performance　than　either　alumina/water　nanofluid　or　titania/water　nanofluid　under　identical　pumping　power.　The　effects　of　NBri　variation　and　N-BT2　variation　of　alumina-titania/water　nanofluid　on　Nusselt　number　and　friction　factor　were　also　investigated.　It　is　interesting　to　note　that　minimum　PEC　values　were　observed　under　the　variation　of　N-BT2　When　N-BT1/N-BT2　is　approximately　6.　However,　maximum　PEC　values　were　observed　under　the　variation　of　NBT1　whenN(BT1)/N-BT2　is　approximately　0.5.　(C)　2017　Elsevier　Ltd.　All　rights　reserved.