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Investigation of nanofluid flow within a duct with complicated swirl flow device using numerical computing technology

    https://doi.org/10.1142/S0129183122500954Cited by:1 (Source: Crossref)

    To decrease the exergy drop, a new style of tape with an inset of the obstacle has been applied in the current utilized heat exchanger. Numerical technique was chosen to discover the solution of the equations for the current application. Hybrid nanopowders were added into a base fluid and an experimental formulation was utilized for involving the new working fluid. Addition of nanopowder and insertion of obstacle over the tape lead to augmentation of productivity of unit and help the system to minimize the irreversibility. Checking the correctness of the procedure in the modeling has been tested and proved to be in nice agreement. Two configurations for geometry of tube have been compared in two levels of Re. The regime of fluid is turbulent and the generation of grid has been done with considering the limitation of Y+. With the insertion of obstacle in the lowest level of Re, the swirl flow increases and Sgen,f augments about 252.6% while Sgen,h reduces about 21.22%. The value of heating term is much higher than the friction term, so Xd declines by 21.21%. With the use of new configuration of turbulator, elevating Vin leads to elevation of Sgen,f by 24.21% but Sgen,h declines about 83.39%. Adding the turbulator with obstacle, Tw decreases about 0.22% when Re = 2e4.

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