2014
DOI: 10.1016/j.jcp.2014.02.037
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Numerical computation of 3D heat transfer in complex parallel heat exchangers using generalized Graetz modes

Abstract: We propose and develop a variational formulation dedicated to the simulation of parallel convective heat exchangers that handles possibly complex input/output conditions as well as connection between pipes. It is based on a spectral method that allows to re-cast three-dimensional heat exchangers into a two-dimensional eigenvalue problem, named the generalized Graetz problem. Our formulation handles either convective, adiabatic, or prescribed temperature at the entrance or at the exit of the exchanger. This for… Show more

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Cited by 11 publications
(26 citation statements)
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“…The details of the numerical method used in this contribution has already been detailed in [28], as well as briefly described and used in [30]. [30] also provides several numerical validations of the method.…”
Section: General Comments On the Formulation And Numerical Methodsmentioning
confidence: 99%
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“…The details of the numerical method used in this contribution has already been detailed in [28], as well as briefly described and used in [30]. [30] also provides several numerical validations of the method.…”
Section: General Comments On the Formulation And Numerical Methodsmentioning
confidence: 99%
“…The ampli tudes of Graetz are then coupled together into a linear system which is set so as to 'match' the continuity of temperature and fluxes at the exchanger inlets and outlets. A detailed description of the method can be found in [28]. Let us just recall the theoretical Table 1 Physiological values used for Péclet computation assuming that c 3651 J/(kgÁ C), k F 0:51 W/(mÁ C) and q 1046 kg/m 3 [32].…”
Section: General Comments On the Formulation And Numerical Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…(18) were considered equal to unity and the equation was solved for the said boundary and initial conditions. The solution was based on the discussed hybrid scheme, employing three different meshes.…”
Section: Validity Of the Methodsmentioning
confidence: 99%
“…However, 2-D analysis is not always sufficient, and a full 3-D analysis is required in some circumstances for more accuracy [15], especially of transfer in heat exchangers [16][17][18].…”
Section: Introductionmentioning
confidence: 99%