2013
DOI: 10.1016/j.compfluid.2013.07.014
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Numerical methodology for the assessment of relative and absolute deterministic flow structures in the analysis of impeller–tongue interactions for centrifugal fans

Abstract: In this paper a numerical methodology to segregate relative and absolute flow structures, allowing a deep analysis of the impeller-tongue interaction in centrifugal fans, is presented. The procedure, based on a deterministic decomposition of the internal flow fields, is applied for first time in blade-to-blade planes of radial turbomachinery. Previous numerical results, obtained with a viscous 3D unsteady solver, already validated by the authors and available in the literature, are used as a database for the n… Show more

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Cited by 14 publications
(4 citation statements)
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References 34 publications
(39 reference statements)
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“…Even at the point of maximum efficiency, there is a back flow can still be observed inside the flow path of the blade. There are large vortexes at the inlet of the blade according to the literature (Tremmel and Taulbee, 2008;Suarez et al 2006;Wen et al 2016;Kind and Tobin, 1990;Fernandez et al 2013). The numerical simulation of this paper also captures this phenomenon.The radial section of the impeller is taken to observe the flow in the blade.…”
Section:  supporting
confidence: 64%
“…Even at the point of maximum efficiency, there is a back flow can still be observed inside the flow path of the blade. There are large vortexes at the inlet of the blade according to the literature (Tremmel and Taulbee, 2008;Suarez et al 2006;Wen et al 2016;Kind and Tobin, 1990;Fernandez et al 2013). The numerical simulation of this paper also captures this phenomenon.The radial section of the impeller is taken to observe the flow in the blade.…”
Section:  supporting
confidence: 64%
“…The energy power loss, calculated by Equation 14, and the fan energy efficiency of the forced draft fan, calculated by Equation (15), are shown in Figure 7 for all of the observed steam system loads. The fan energy power loss and energy efficiency have no monotonic trends during an increase in the steam system load.…”
Section: Resultsmentioning
confidence: 99%
“…The meshing module of ANSYS 19.0 software (ANSYS, Inc., Pennsylvania, USA) was used to mesh the pneumatic conveying system model and the Fluent module to simulate the airflow field. Dynamic mesh method was used to simulate the ducted fans [27] . The model was divided into two parts: the dynamic mesh fluid domain and the static mesh fluid domain.…”
Section: Causes Analysis Methods Of Inconsistent Discharge Rate Of Ea...mentioning
confidence: 99%