Effective force area and discharge coefficient for reed type valves: A comprehensive data set from a numerical study

Autor(es)

Ferreira, Ricardo Lopes ^[1] ; Gasche, Jose Luiz ^[2]

Afiliação do(s) autor(es)

^[1] Technol Fed Univ Parana, Dept Mech Engn, Cornelio Procopio, PR - Brazil

^[2] Sao Paulo State Univ Unesp, Dept Mech Engn, Ilha Solteira - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID; v. 103, p. 287-300, JUL 2019.
• Citações Web of Science: 0

Resumo

Radial diffusers have been used as valve model to determine effective force area and discharge coefficient of the flow. A comprehensive data set of these parameters is lacking in the literature. Here, we present numerical results of these parameters for a wide range of incompressible flow operating conditions. The code OpenFOAM (R) was used to solve the problem for radial diffusers with diameter ratios ranging from 1.15 to 1.7, Reynolds numbers ranging from 3000 to 50,000, and lifts varying from 0.01 to 1.0. The influence of the diameter ratio on the effective force area is found to be high. There is a decrease of up to 80% for small lifts and an increase of 40% for large lifts, but it has a negligible effect on the discharge coefficient. The influence of the Reynolds number on the discharge coefficient is small, up to 8%, but it is large on the effective force area. (C) 2019 Elsevier Ltd and IIR. All rights reserved. (AU)

• Processo FAPESP: 16/23976-1 - Simulação computacional de escoamentos com interação fluido-estrutura
• Beneficiário: José Luiz Gasche
• Modalidade de apoio: Auxílio à Pesquisa - Regular