Friction reduction by inlet temperature variation in microchannel flow

2021 ◽  
Vol 33 (6) ◽  
pp. 062003
Author(s):  
Dmitry S. Gluzdov ◽  
Elizaveta Ya. Gatapova
Keyword(s):  
Temperature Variation ◽  
Friction Reduction ◽  
Inlet Temperature ◽  
Microchannel Flow

Buckling delamination induced microchannel: Flow regulation in microfluidic devices

2016 ◽  
Vol 109 (10) ◽  
pp. 103503 ◽  
Author(s):  
Jingtian Kang ◽  
Changguo Wang ◽  
Zhiming Xue ◽  
Mengxiong Liu ◽  
Huifeng Tan
Keyword(s):  
Microfluidic Devices ◽  
Flow Regulation ◽  
Microchannel Flow ◽  
Buckling Delamination

scholarly journals Numerical and experimental studies of acoustic streaming effects on microparticles/droplets in microchannel flow

2021 ◽  
Vol 169 ◽  
pp. 103563
Author(s):  
Sadaf Maramizonouz ◽  
Mohammad Rahmati ◽  
Andreas Link ◽  
Thomas Franke ◽  
Yongqing Fu
Keyword(s):  
Acoustic Streaming ◽  
Experimental Studies ◽  
Microchannel Flow

Mathematical study of a single leukocyte in microchannel flow

2018 ◽  
Vol 13 (5) ◽  
pp. 43 ◽  
Author(s):  
S. Boujena ◽  
O. Kafi ◽  
A. Sequeira
Keyword(s):  
Mathematical Model ◽  
Numerical Approximation ◽  
Stokes Equations ◽  
Navier Stokes ◽  
Microchannel Flow ◽  
Navier Stokes Equations ◽  
Coupled Problem ◽  
Inflammatory Drugs ◽  
The Mathematical Model ◽  
Rate Type

The recruitment of leukocytes and subsequent rolling, activation, adhesion and transmigration are essential stages of an inflammatory response. Chronic inflammation may entail atherosclerosis, one of the most devastating cardiovascular diseases. Understanding this mechanism is of crucial importance in immunology and in the development of anti-inflammatory drugs. Micropipette aspiration experiments show that leukocytes behave as viscoelastic drops during suction. The flow of non-Newtonian viscoelastic fluids can be described by differential, integral and rate-type constitutive equations. In this study, the rate-type Oldroyd-B model is used to capture the viscoelasticity of the leukocyte which is considered as a drop. Our main goal is to analyze a mathematical model describing the deformation and flow of an individual leukocyte in a microchannel flow. In this model we consider a coupled problem between a simplified Oldroyd-B system and a transport equation which describes the density considered as non constant in the Navier–Stokes equations. First we present the mathematical model and we prove the existence of solution, then we describe its numerical approximation using the level set method. Through the numerical simulations we analyze the hemodynamic effects of three inlet velocity values. We note that the hydrodynamic forces pushing the cell become higher with increasing inlet velocities.

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