Unsteady natural convection boundary layer flow and heat transfer past a vertical flat plate with novel constitution models

Seeking proper and reasonable constitutive relations to study the characteristics of flow heat transfer viscoelastic fluid is a hot topic in recent years. In this work, new distributed order time fractional constitution model put forward analyse unsteady natural convection boundary layer transfer, which magnetic field effect considered. The mid-point quadrature method applied approach integrals L1-formula employed discrete derivatives. influences different involved parameters on velocity temperature distributions comparisons with models are presented by graphical illustrations discussed detail.