Tytuł:

A new correlation for predicting the hydrothermal characteristics over flat tube banks

Twórca:

Sahel, Djamel ; Ameur, Houari ; Boudaoud, Warda

Temat:

fluid flow ; heat transfer ; flat tube size ; tube bank ; computational fluid dynamics

Opis:

The flat tubes are necessary apparatus to design the modern heat exchangers. In this context, a CFD (computational fluid dynamics) study has been achieved to explore the influence of the flat tube size on the heat transfer characteristics in cross-flow over flat tube banks. The calculations are performed with the help of the computer code (Fluent) which is based on the finite volume method to solve the continuity, momentum and energy equations. The numerical investigations are achieved for laminar flow (Reynolds numbers changing from 50 to 800), two dimensional and incompressible fluids. Some predicted results are compared with available experimental data of the literature and a satisfactory agreement is observed. The obtained results show a decrease in the heat transfer coefficient with increased flat tube size. A new valuable empirical correlation is suggested for the prediction of heat transfer coefficients over a flat tube bank. The proposed correlation may be useful for engineers to predict the heat transfer rates in such devices without requirements of experimental measurements.

Miejsce wydania:

Koszalin

Wydawca:

Publishing House of the Koszalin University of Technology

Data:

2019

Typ:

artykuł w czasopiśmie

Format:

application/pdf

Język:

eng

Jest częścią:

Journal of Mechanical and Energy Engineering. Vol.3 (43), nr 3, s. 273-280

Prawa:

Biblioteka Politechniki Koszalińskiej

Prawa dostępu:

internet

Licencja:

Creative Commons BY 4.0