Numerical investigation of wall shear stress and pressure difference in microchannels


Çadırcı S., Demir U., Birol S. Z. , Trabzon L. , Güneş H.

PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI, cilt.24, ss.19-24, 2018 (ESCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 24 Konu: 1
  • Basım Tarihi: 2018
  • Doi Numarası: 10.5505/pajes.2017.47639
  • Dergi Adı: PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI
  • Sayfa Sayıları: ss.19-24

Özet

In this study, wall shear stress and pressure difference values for a pure water flow in various microchannel configurations are obtained numerically. Through simulations, physical effects of various flow rates on endothelium and immune system cells are predicted and case studies are carried out to investigate the behavior of such cells under similar laboratory conditions. In-vivo physiological behavior of endothelium and monocyte cells under real conditions can be predicted by pressure differences and wall shear stresses calculated for various flowrates. In this concept, various microchannel configurations such as sudden expanding microchannels with different expansion ratios, microchannels with cavities on one side and symmetrically curved microchannels are designed and CFD simulations are carried out to obtain computational values of the pressure drops between the inlet and outlet of the microchannels as well as wall shear stress distributions on the bottom walls of the configurations.