Publication detail

IMPORTANCE OF 3D VEHICLE HEAT EXCHANGER MODELING

Authors: Schmid Michal | Paščenko Petr | Bozkurt Fatih | Pavel Petržela

Year: 2022

Type of publication: článek v odborném periodiku

Name of source: Journal of Thermal Science and Engineering Applications

Page from-to: 1-10

Titles:

Language	Name	Abstract	Keywords
cze	Význam 3D modelování pro tepelné výměníky vozidel	Práce demonstruje význam použití 3D CFD přístupu pro tepelné výměníky u simulací proudění v motorovém prostoru vozidel.	3D and 1D CFD, tepelný výměník
eng	IMPORTANCE OF 3D VEHICLE HEAT EXCHANGER MODELING	The work demonstrates, via a comprehensive study, the necessity of using a 3D CFD approach for heat exchanger (HTX) modelling within underhood vehicle simulation. The results are presented as the difference between 1D and 3D CFD approaches with a focus on auxiliary fluid (e.g. coolant) temperature prediction as a function of primary fluid (e.g. air) inlet conditions. It has been shown that the 1D approach could significantly underpredict auxiliary fluid inlet temperature due to neglecting the spatial distribution of primary fluid velocity magnitude. The resultant difference in the auxiliary fluid flow HTX inlet temperature is presented and discussed as a function of the Uniformity Index (UI) of the primary fluid flow velocity magnitude. Additionally, the 3D HTX model’s importance is demonstrated in an industrial example of full 3D underhood simulation.	3D and 1D CFD; heat exchanger; temperature prediction accuracy; uniformity index; primary and auxiliary fluid

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