Heat Transfer Augmentation with the Use of Γ- AL2O3/Water Nanofluid and Longitudinal Ribs in a Curved Channel

This article presents a numerical investigation of heat transfer enhancement using longitudinal ribs and γ- Al2o3/ water nanofluid in a square cross- sectioned stationary curved duct. The flow assumed 3D, steady, laminar, and incompressible with constant properties. Computations have been done by solving Navier- Stokes and energy equations utilizing finite volume method. Water has been selected as base fluid and, thermo- physical properties of γ- Al2o3/ water nanofluid have been calculated using available correlations in the literature. The effects of Dean number and particle volume fraction on heat transfer and pressure drop have been examined. Results show that Noticeable heat transfer enhancement, compared to water flow in smooth duct, can be achieved when γ- Al2o3/ water nanofluid is used as working fluid in ribbed duct.

کلیدواژه ها:

curved duct ، Dean number ، laminar flow ، heat transfer enhancement ، particle volume fraction