Experimental and Computational Modelling of Flow Distribution

Fialová, Dominika Babička; Jegla, Z.

doi:10.11159/enfht20.148

Cited by 1 publication

(2 citation statements)

References 3 publications

(5 reference statements)

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“…1. steady-state conditions; A closer investigation into the working of the distribution models revealed rather opposite results depending on geometry parameters of distribution systems [43]. This paper builds upon the previous work presented in [43] and provides a deeper view of the research into the modeling of flow distribution via analytical, numerical, and experimental means.…”

Section: Methodsmentioning

confidence: 66%

“…Numerical simulations were chosen as the second approach to investigate flow behavior in distribution systems. 3D CFD models can offer a detailed view into flow geometry, especially in the critical parts of the distribution systems where fluid properties and flow parameters would be measurable with much difficulty or not at all [43]. CFD also provides a convenient comparison to the performance of simpler mathematical models described in the previous part.…”

Section: Cfd Modelsmentioning

confidence: 99%

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Experimentally Verified Flow Distribution Model for a Composite Modelling System

Fialová

Jegla

2021

Energies

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Requirements of modern process and power technologies for compact and highly efficient equipment for transferring large heat fluxes lead to designing these apparatuses as dense parallel flow systems, ranging from conventional to minichannel dimensions according to the specific industrial application. To avoid operating issues in such complex equipment, it is vital to identify not only the local distribution of heat flux in individual parts of the heat transfer surface but also the uniformity of fluid flow distribution inside individual parallel channels of the flow system. A composite modelling system is currently being developed for accurate design of such complex heat transfer equipment. The modeling approach requires a flow distribution model enabling to yield accurate-enough predictions in reasonable time frames. The paper presents the results of complex experimental and modeling investigation of fluid flow distribution in dividing headers of tubular-type equipment. Different modeling approaches were examined on a set of header geometries. Predictions obtained via analytical and numerical models were validated using data from the experiments conducted on additively manufactured header samples. Two case studies employing parallel flow systems (mini-scale systems and a conventional-size heat exchanger) demonstrated the applicability of the distribution model and the accuracy of the composite modelling system.

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Section: Methodsmentioning

confidence: 66%

Section: Cfd Modelsmentioning

confidence: 99%