Abstract Two dimensional, selective withdrawal of a three-layer fluid in rectangular tank is considered. Each viscous, weakly compressible and miscible. The lowermost, heaviest flows with constant speed out through line sinks located on the base lower side walls tank. uppermost lightest recharges via sources along top upper at rate that matches outward flux. If are turned suddenly, interfaces b...

the nonlocal nonlinear buckling of a double layer graphene sheet (dlgs) covered by zinc oxide (zno) piezoelectric layers is investigated in this study. the surrounding circumstances of the system are considered as a pasternak foundation including spring constants and a shear layer. graphene sheets are subjected to longitudinal magnetic field and biaxial forces. on the other hand, the zno piezoe...