TY - JOUR

T1 - Experimental study of unstable film boiling on a modified heating surface

AU - Levin, A. A.

AU - Khan, P. V.

AU - Safarov, A. S.

AU - Filatov, I. A.

AU - Moskvin, M. K.

N1 - Levin, A.A., Khan, P.V., Safarov, A.S. et al. Experimental study of unstable film boiling on a modified heating surface. Thermophys. Aeromech. 32 (Suppl 1), 40–46 (2025). This work was supported by a grant from the Russian Science Foundation (Project No. 22-19-00092-П).

PY - 2025/11

Y1 - 2025/11

N2 - An experimental investigation is conducted on a specific boiling regime of a subcooled water flow, leading to the formation of superintensive heat exchange with a metal heater. To analyze the influence of surface modification, several heaters with different micro-geometries were used: a smooth one with Rc = 0.5 µm and a modified one processed using laser ablation. In the latter case, the surface micro-relief is characterized by a roughness of Rc = 10 µm, as well as the presence of cylindrical protrusions with a height and diameter of 200 µm. The experiments were carried out in a vertical channel at an initial pressure of 0.29 MPa, a maximum heater temperature of 450 °C, and an average flow velocity of 0.52 m/s.

AB - An experimental investigation is conducted on a specific boiling regime of a subcooled water flow, leading to the formation of superintensive heat exchange with a metal heater. To analyze the influence of surface modification, several heaters with different micro-geometries were used: a smooth one with Rc = 0.5 µm and a modified one processed using laser ablation. In the latter case, the surface micro-relief is characterized by a roughness of Rc = 10 µm, as well as the presence of cylindrical protrusions with a height and diameter of 200 µm. The experiments were carried out in a vertical channel at an initial pressure of 0.29 MPa, a maximum heater temperature of 450 °C, and an average flow velocity of 0.52 m/s.

KW - boiling

KW - subcooled liquid

KW - transient boiling

KW - unsteady heat release

UR - https://www.scopus.com/pages/publications/105035724083

UR - https://www.mendeley.com/catalogue/a17cbeb3-7e62-3a35-b3d9-74f51476dc3b/

U2 - 10.1134/S0869864325010305

DO - 10.1134/S0869864325010305

M3 - Article

VL - 32

SP - 40

EP - 46

JO - Thermophysics and Aeromechanics

JF - Thermophysics and Aeromechanics

SN - 0869-8643

IS - Suppl 1

ER -