Local heat transfer from a roughened surface with inclined ribs

N. D. Bogdanov, I. A. Davletshin, N. I. Mikheev, R. R. Shakirov, A. A. Paerelij

Institute of Energy and Advanced Technologies of the Kazan Scientific Center of the Russian Academy of Sciences

Abstract: Local coefficients of heat transfer and local velocity were measured for the case of a heated surface with ribs inclined at an angle of 45$^\circ$ to the flow. The height of ribs was 1.4% of the hydraulic diameter. The field and profile of non-dimensional coefficient of heat transfer were estimated from thermographic measurements of temperature. The optical method SIV was employed to measure the local velocities at a characteristic distance from the surface. A qualitative correlation between the measured values of heat transfer and velocity was established.

Keywords: inclined ribs, heat transfer enhancement, optical measurements, distribution of heat transfer coefficient, velocity field.

Received: 03.03.2025
Revised: 05.04.2025
Accepted: 05.04.2025

DOI: 10.61011/PJTF.2025.13.60702.20304

Bibliographic databases:

•