2026-04-14T04:20:47Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/4211452026-02-07T07:39:09Zcom_2072_1033col_2072_452950

Differentially heated turbulent channel flow two-point correlations García Berenguer, Marina Silva, Lucas Gasparino Ferreira da Lehmkuhl Barba, Oriol Rodríguez Pérez, Ivette María Universitat Politècnica de Catalunya. Doctorat en Enginyeria Mecànica, Fluids i Aeronàutica Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics Universitat Politècnica de Catalunya. TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group Àrees temàtiques de la UPC::Física::Termodinàmica Heat transfer Non-isothermal turbulent channel flow Asymmetrically heated channel flow Computational Fluid Dynamics (CFD) Direct Numerical Simulation (DNS) This study analyzes the behavior of a differentially heated channel flow by means of a direct numerical simulations (DNS) with variable thermophysical properties under low-speed conditions focusing on the impact of the temperature gradient on the turbulence structures near the channel walls. The simulations were conducted at a mean friction Reynolds number of Retm = 400 with a temperature ratio between the walls of Thot/Tcold = 2. Results show significant differences between the hot and cold walls that lead to an increased heat transfer at the hot wall and a higher turbulent production in the cold wall. This work has been partially financially supported by the Ministerio de Economía y Competitividad, Secretaría de Estado de Investigación, Desarrollo e Innovación, Spain (ref. PID2020116937RB-C21 and PID2020-116937RB-C22). The corresponding first author gratefully acknowledges the Universitat Politècnica de Catalunya and the Banco Santander for the financial support of her predoctoral grant FPI-UPC. Postprint (published version) 2024 Conference report García-Berenguer, M. [et al.]. Differentially heated turbulent channel flow two-point correlations. A: European Congress on Computational Methods in Applied Sciences and Engineering. "ECCOMAS: 9th European Congress on Computational Methods in Applied Sciences and Engineering: Lisbon, Portugal, 3rd-7th June". Barcelona: International Centre for Numerical Methods in Engineering (CIMNE), 2024, ISBN 2696-6999. DOI 10.23967/eccomas.2024.133 . 2696-6999 https://hdl.handle.net/2117/421145 10.23967/eccomas.2024.133 eng https://www.scipedia.com/public/Garcia-Berenguer_et_al_2024a info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116937RB-C21/ES/ALGORITMOS DE INTELIGENCIA ARTIFICIAL Y COMPUTACION DE ALTAS PRESTACIONES PARA MODELADO DE TURBULENCIA, CONTROL DE FLUJO Y AEROACUSTICA./ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116937RB-C22/ES/TOWARDS REAL-TIME ACTUATION STRATEGIES FOR FLOW CONTROL AND NOISE REDUCTION IN AIRCRAFTS./ http://creativecommons.org/licenses/by-nc-sa/4.0/ Open Access Attribution-NonCommercial-ShareAlike 4.0 International application/pdf International Centre for Numerical Methods in Engineering (CIMNE)