(cest2017_00414) Geometrical characteristics' impact over the thermal plume modelling with breathing thermal manikins

摘要

The presented paper reveals a CFD based analyses of thecomplexity in the geometrical shape of the thermalmanikins, related to their thermal and breathing functions.Both impacts, over velocity and temperature fields in themanikin's thermal plume zone above the head are analyzedfor two different geometrical shapes - a physiologicallyidentified (Humanoid Manikin) and one designed to matchthe overall 95th percentile of the anthropometric size of thestandard person (Polygonal Manikin). The first modelrepresents a comprehensive multifaceted figure of amanikin with high degree of physiological identity with afemale human being. The second one is simplified, but stillwith anatomically realistic component forms, accuratelyrepresenting the anthropometric size of a standard person.This model, suggested by the authors, allows completelyrealistic positioning of the hands and legs in the space, andthe manikin itself is more convenient for manufacturing ofreal breathing prototype. The obtained numerical resultsdemonstrate the noticeable impact of the manikins'geometrical characteristics over the simulated breathingand convective flows. The resulting differences haveindicted the need of geometrical improvements of thePolygonal Manikin in order to match better the real humanbody thermal plume characteristics.