Laminar pulsating flow of nanofluids in a circular tube with isothermal wall

In this study, two-dimensional pulsating flow of nanofluids through a pipe with isothermal walls is numerically investigated. In order to solve Navier–Stokes and energy equations, the finite volume approach with collocated grid is employed. The momentum interpolation technique of Rhie and Chow is applied in SIMPLE algorithm. Pulsating flows have potential for research as many aspects of such flows are still unclear and require further investigation because of many upcoming applications. In the past decade, nanofluids have attracted much interest because of their reported superior thermal performance and many potential applications. Pulsation in nanofluid is a new idea in case of fluid mechanics and heat transfer. The authors have not found any records similar to the present study. One of the advantages of using pulsation in nanofluid is a delay in nanoparticles sedimentation process. The simulation performed at with different pulse parameters (Amplitude, Strouhal and Reynolds numbers) and volume fractions of nanoparticles for unsteady flow. Increasing both the frequency and amplitude leads to a slight increase in Nusselt number but by increasing Reynolds and volume fraction, more rate of heat transfer is observed.