Cooled pads with bioinspired gyroid lattice for tilting pad journal bearings: Experimental validation of numerical model for heat transfer

Dassi, Ludovico; Chatterton, Steven; Parenti, Paolo; Vania, A.; Colosimo, Bianca Maria; Pennacchi, Paolo

doi:10.1016/j.triboint.2023.108448

Cited by 9 publications

(3 citation statements)

References 30 publications

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“…the laminar and turbulent flow [31][32][33]. The calculation of the considered parameters in the form of pressure drop, flow velocity, or turbulent kinetic energy values was based on the Navier-Stokes system of equations describing the three-dimensional fluid flow and the Darcy-Weisbach equation, which quantifies the fluid friction, viscosity, density, and the associated pressure drop of the flowing fluid.…”

Section: Methodsmentioning

confidence: 99%

Numerical Study of Fluid Flow in a Gyroid-Shaped Heat Transfer Element

Beer,

Rybár

2024

Energies

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This paper deals with the design of porous geometry of a heat transfer element. The proposed geometry combines a gyroid triply periodic minimal surface with the recursive principle of geometric body creation. The designed geometry is based on an attempt to increase the heat transfer surface while eliminating negative impacts on the fluid characteristics in the form of pressure loss or increase of the friction coefficient. The proposed geometry of the heat transfer element was compared with a pair of geometries based on the basic gyroid shape but with different channel size parameters. A numerical simulation was performed in Ansys Fluent 2020 R1 using the SST k-omega turbulence model for flow velocities in the range of 0.01 m.s−1 to 0.5 m.s−1, which covered a wide range of the Reynolds number and thus also flow forms in terms of the turbulence intensity. The presented results clearly show lower values of pressure loss and friction coefficient of the proposed geometry compared to the evaluated porous structures. Also, at the same time, they describe the factors positively influencing the mixing process of the liquid in the proposed element, which leads to an increase in the efficiency of the heat transfer process.

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Section: Methodsmentioning

confidence: 99%

Numerical Study of Fluid Flow in a Gyroid-Shaped Heat Transfer Element

Beer,

Rybár

2024

Energies

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“…Aht,i li (6) where A ht,i is the heat transfer area, A f,min,i is the minimum flow cross section, and l i is the overflow length of a single fin passage. Based on the number of channels N i as well as the number of fin passages along (n l,i ) and across (n t,i ) to the flow direction, the total heat transfer area as well as the total minimum flow cross-section can be calculated, the following applies for the total heat transfer area…”

Section: Calculation Program For Consideration Of Axial Heat Conductionmentioning

confidence: 99%

“…Other examples are so-called minimal surface structures, e.g. gyroids, which are investigated in Dixit et al [4], Tang et al [5] and Dassi et al [6]. Thus, additive manufacturing can be used to enable specific optimizations to structures to influence flow in terms of heat transfer and pressure drop, as presented in Alexandersen et al [7], Dede et al [8], and Pilagatti et al [9], among others that are presented in the reviews done by Dbouk et al [10].…”

Section: Introductionmentioning

confidence: 99%