Experimental and Numerical Investigation of the Thermal Transition Area at the Heated Bottom-Wall of a Horizontal Rectangular Channel

0534700 - ÚT 2021 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Pulec, J. - Novosád, J. - Vinš, Václav - Dančová, P.
Experimental and Numerical Investigation of the Thermal Transition Area at the Heated Bottom-Wall of a Horizontal Rectangular Channel.
MATEC Web of Conferences. Vol. 328. Grenoble: EDP Sciences, 2020, č. článku 02022. E-ISSN 2261-236X.
[XXII. International Scientific Conference – The Application of Experimental and Numerical Methods in Fluid Mechanics and Energy 2020 (AEaNMiFMaE-2020). Piešťany (SK), 07.10.2020-09.10.2020]
Institucionální podpora: RVO:61388998
Klíčová slova: convection * heat transfer * non-isothermal flow * numerical simulation
Obor OECD: Applied mechanics
https://www.matec-conferences.org/articles/matecconf/abs/2020/24/matecconf_aenmfme2020_02022/matecconf_aenmfme2020_02022.html

This article represents a part of an ongoing work on the preparation of an experimental rectangular channel for the PIV and LIF measurements of vortex structures and temperature field in a nonisothermal water flow. The main aim of the current study is to develop a sufficiently accurate simplified numerical model of the real problem. The basic requirements for thermal properties of heated bottom-wall are specified. In the computational model, there are several simplifications such as 2D case and a constant temperature of a heated surface along the longitudinal coordinate. Results of the numerical simulation of the fluid flow and heat transfer are verified on the experimental data obtained in a laboratory channel with the same geometry and similar flow conditions. The presented results helped to define additional requirements on the design of a new experimental channel intended for investigation of the flow instabilities in a non-isothermal liquid flow.
Trvalý link: http://hdl.handle.net/11104/0314745