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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.244 SNIP: 0.434 CiteScore™: 0.7

ISSN Печать: 1940-2503
ISSN Онлайн: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2018021278
Forthcoming Article

NUMERICAL STUDY ON CONVECTIVE HEAT TRANSFER ENHANCEMENT BY VORTEX INTERACTIONS

GP Aravind
Indian Institute of Space Science and Technology
S Gokul
Indian Institute of Space Science and Technology
Deepu M

Краткое описание

Miniaturization and performance augmentation of heat transfer equipment calls for heat transfer enhancement methods with minimal pressure loss. Flow manipulators such as vortex generators used in a flow field can enhance heat transfer without any external interference. A novel passive heat transfer enhancement mechanism based on vortex interactions of longitudinal vortex generators is analyzed in the present study. Extensive computational study has been carried out to explore the effect of the interactions of identical and distinct vortex interactions in promotion of convective heat transfer. Role of multiple vortex generators and interaction of various kinds of vortices generated by them over a flat plate placed in high speed flow in promotion of passive heat transfer are analysed in detail. Advection Upstream Splitting Method available in a FVM based commercial solver is used for the inviscid flux computations in three dimensional compressible turbulent flow field. Analysis using method of images and potential flow theory establishes a coherence between vortex trajectory and heat transfer enhancement pattern in the flow field. A performance parameter, which compares heat transfer enhancement with associated pressure loss, is used in the present study to evaluate the overall performance of the system.