Experimental and Numerical Investigation of the Gas Side Heat Transfer and Pressure Drop of Finned Tubes—Part II: Numerical Analysis

Autor:	Rene Hofmann, Heimo Walter
Rok vydání:	2012
Předmět:	Physics::Fluid Dynamics Fluid Flow and Transfer Processes General Engineering General Materials Science Condensed Matter Physics
Zdroj:	Journal of Thermal Science and Engineering Applications. 4
ISSN:	1948-5093 1948-5085
DOI:	10.1115/1.4007125
Popis:	The heat transfer and pressure drop behavior of segmented circular and helical as well as solid finned tubes are investigated in a three-dimensional numerical study. The simulation is carried out using a finite volume method for calculating the steady-state temperature and flow field of the fluid as well as the temperature distribution of the tube material. For modeling the turbulence, the k-ε turbulence model based on the renormalization group theory (RNG) is used to resolve the near-wall treatment between adjacent fins. All simulations are performed in the Re range between 3500 ≤ Re ≤ 50,000. The influence of Reynolds number and fin geometry (segmented or solid and circular or helical) on the local and global averaged heat transfer and pressure drop was studied. A comparison between solid and segmented finned tube has shown that the heat transfer and pressure drop for the segmented finned tubes is higher. The numerical results are compared with experimental data.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e3d7464502ff5b2c5bf3b54c635332ce https://doi.org/10.1115/1.4007125 Zobrazit plný text záznamu