LEMOS, Bernardo Luiz Harry Diniz; BORTOLIN, Vitor Augusto Andreghetto; AMARAL, Rodrigo de Lima; MAZZETTO, Marcelo; CESTARI, Idágene Aparecida; MENEGHINI, Julio Romano.
Effect of the bileaflet inlet valve angle on the flow of a pediatric ventricular assist device: Experimental analysis
Mechanical heart valves (MHV) and its fluid dynamics inside a pulsatile pediatric ventricular assist device (PVAD) can be associated with blood degradation. In this article, flow structures are analyzed and compared by an experimental investigation on the effect of bileaflet MHV positioned at varying angles in the inlet port orifice of a PVAD.
(A) Experimental setup; (B) side view with measured PIV planes and distances; (C) top view with middle plane centered at the valve diameter.
This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior -Brasil (CAPES –Coordination for the Improvement of Higher Education Personnel) -Finance Code 001. This work was carried out with support from the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq –Brazilian National Council for Scientific and Technological Development), process 311191/2017-7. This work was supported by process n° 2012/50283-6, Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP –The State of São Paulo Research Foundation). We gratefully acknowledge support of the RCGI –Research Centre for Greenhouse Gas Innovation, hosted by the University of São Paulo (USP) and sponsored by FAPESP –São Paulo Research Foundation (2014/50279-4 and 2020/15230-5) and Shell Brasil, and the strategic importance of the support given by ANP (Brazil’s National Oil, Natural Gas and Biofuels Agency) through the R&D levy regulation. The authors thank the InCor (Instituto do Coração) and PIVbr group (www.piv.eng.br) for all their collaboration.