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Article History

Received: 26 November 2023

Revised: 14 December 2023

Accepted: 14 December 2023

First Online: 8 May 2024

CONFLICT OF INTEREST

: The authors declare that they have no conflicts of interest.

: Nu, Nusselt number, Nu = α<i>D</i>/λPr, Prandtl number, Re, Reynolds number, Re = ρ<i>UD</i>/μ<i>Т</i>, temperature, K<i>Uс</i>, freestream velocity, m/s<i>U</i>, <i>V</i>, <i>W</i>, longitudinal, vertical, and transverse Cartesian velocity components divided by <i>Uc</i><i>Q</i>, longitudinal velocity component along the <i>s</i> coordinate in the coordinate system fitted to the groove, heat capacity<i>H</i>, channel height, m<i>s</i>, longitudinal coordinate in the groove mid-section divided by <i>D</i><i>t</i>, transverse coordinate in the section of the juncture between the spherical segment and the trench divided by <i>D</i><i>k</i>, turbulent kinetic energy divided by <i>U</i>²<i>p</i>, pressure divided by ρ<i>U</i>²<i>x</i>, <i>y</i>, <i>z</i>, longitudinal, vertical, and transverse coordinates divided by <i>D</i>Greek symbols, heat conductivity, W m^–1K^–1µ, dynamic viscosity coefficient, kg/(m s)ρ, density, kg/m³ζ, coefficient of hydraulic losesSubscriptsmin, max, minimum and maximum valuespl, plane wallm, parameters averaged over the area of a transverse bandmm, parameters averaged over the area of the control regionAbbreviationsSST, shear stress transfer modelVP2/3, velocity-pressure, 2D/3D codes