Direct numerical simulation of one-sided forced thermal convection in square ducts

D. Modesti, S. Pirozzoli

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

We carry out direct numerical simulation (DNS) of forced thermal convection in one-sided heated square ducts and compare the global heat transfer to the idealized case of uniformly heated walls, and also to the case of plane channel flow with one-sided heating. DNS results reveal a reduction of global heat transfer of about 10% at unit Prandtl number and friction Reynolds number Reτ ≈ 2000, which is consistent with the values reported in early experiments. The global heat transfer of square ducts matches very well the one of plane channel flow with the same boundary conditions, at matched bulk Reynolds number based on the effective diameter.

Original languageEnglish
Title of host publication10th International Symposium on Turbulence, Heat and Mass Transfer, THMT 2023
PublisherBegell House Inc.
Number of pages8
ISBN (Electronic)9781567005349
Publication statusPublished - 2023
Event10th International Symposium on Turbulence, Heat and Mass Transfer, THMT 2023 - Rome, Italy
Duration: 11 Sept 202315 Sept 2023

Publication series

NameProceedings of the International Symposium on Turbulence, Heat and Mass Transfer
ISSN (Print)2642-5629
ISSN (Electronic)2377-2816

Conference

Conference10th International Symposium on Turbulence, Heat and Mass Transfer, THMT 2023
Country/TerritoryItaly
CityRome
Period11/09/2315/09/23

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