**5. Conclusion**

MHD flow and heat transfer of Casson nanofluid through a porous medium over a stretching sheet have been investigated. The governing boundary layer equations are transformed into ordinary differential equations using similarity transformations and are then solved by the Keller box method. The effects of the various governing parameters viz. magnetic parameter M, Casson parameter *γ*, porosity parameter k and the nanoparticle volume fraction *ϕ* on the flow and heat transfer characteristics of two types of nanofluids, that is, Ag-water and Cu-water are determined [55, 56]. The present chapter leads to the following observations:

