Study on the consistency between field synergy principle and entransy dissipation extremum principle

• Published in: International journal of heat and mass transfer Vol. 116; pp. 621 - 634
• Main Authors: Yu, Zhi-Qiang, Wang, Peng, Zhou, Wen-Jing, Li, Zeng-Yao, Tao, Wen-Quan
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.01.2018; Elsevier BV
• Subjects: Aerodynamics; Boundary conditions; Composite porous materials; Computational fluid dynamics; Computer simulation; Consistency; Dissipation; Entransy dissipation extremum principle; Field synergy number; Field synergy principle; Fin-and-tube surfaces; Fins; Fluid flow and heat transfer characteristics; Heat flux; Laminar flow; Porous materials; Software; Temperature; Turbulence; Turbulent flow; Fin-and-tube surfaces; Entransy dissipation extremum principle; Composite porous materials; Fluid flow and heat transfer characteristics; Field synergy number; Field synergy principle
• ISSN: 0017-9310; 1879-2189
• DOI: 10.1016/j.ijheatmasstransfer.2017.09.044

•Connection between FSP and EDEP is analyzed via eight numerical examples.•The best composite porous material form composed of tetrakaidecahedron is obtained.•Inherent consistency between FSP and EDEP via Fc is definitely demonstrated. This paper is aiming at numerically demonstrating the interrelationship and consistency between field synergy principle (FSP) via the field synergy number (Fc) and the entransy dissipation extremum principle (EDEP). Numerical simulation is conducted by using the FLUENT software and the user defined function programs (UDF) for fin-and-tube surfaces (plain plate and slotted fins) and composite porous materials. The thermal boundary conditions include given heat flux and given surface temperature. The flow includes laminar and turbulent. The air properties may be constant or vary with temperature. Based on the numerical data the analyzed results from the FSP via Fc are totally consistent with the results analyzed by the EDEP for all the cases studied. Such consistency between the FSP and the entransy theory can be regarded as a kind of demonstration of the reliability and correctness of both the FSP and the entransy theory.