Simulação Numérica do Escoamento Laminar em um Canal Complexo

Authors

  • Jalusa Maria da Silva Ferrari Universidade de Brasilia- UnB Grupo de Mecânica Experimental e Computacional ”“ GMEC
  • Jhon Nero Vaz Goulart Universidade de Brasilia- UnBGrupo de Mecânica Experimental e Computacional ”“ GMEC https://orcid.org/0000-0002-3045-1975

DOI:

https://doi.org/10.26512/ripe.v1i2.14435

Abstract

Este trabalho simula numericamente a perda de carga e o coeficiente de atrito médio em canais compostos utilizando o pacote ANSYS® CFX. Foram avaliados 03 tipos de canais retangulares de altura H e largura W com um canal secundário ao longo de uma das paredes laterais. As dimensões do canal secundário são sua profundidade P e largura D. As simulações foram feitas para um escoamento laminar e incompressível para uma faixa de Reynolds de 200 a 1200, baseado no diâmetro-hidráulico, DH, na velocidade média do canal, Um, e na viscosidade cinemática do fluido, ν. Os resultados mostraram que o coeficiente médio de atrito é função de um fator de forma C e inversamente proporcional ao número de Reynolds. A utilização do diâmetro-hidráulico como escala de comprimento para o cálculo do fator médio de atrito levou a uma dispersão dos resultados que foram melhor aproximados utilizando  raiz quadrada da área da seção transversal do canal, . Soluções transientes também foram avaliadas para observar instabilidades comuns nesse tipo de canal. Somente o canal de maior área de slot mostrou flutuações periódicas de velocidade, caso C4. 

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References

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Published

2016-01-15

How to Cite

Ferrari, J. M. da S., & Goulart, J. N. V. (2016). Simulação Numérica do Escoamento Laminar em um Canal Complexo. Revista Interdisciplinar De Pesquisa Em Engenharia, 1(2). https://doi.org/10.26512/ripe.v1i2.14435

Issue

Vol. 1 No. 2 (2015)

Section

Artigos

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