Transport control within a microtube.
Investigation of the entrainment of gases induced by a surface wave propagating along the wall of a microtube is conducted by using a relaxed model with slip velocity boundary conditions. Flow patterns tuned by critical reflux values a0, Knudsen numbers, Reynolds numbers, and the wave number are demonstrated. Results show that once the cross section of the microtube is narrowed down (slip velocity increasing) there are earlier backward flows and the flow pattern is much more complicated. Our results should be useful for the design of micro total analytical systems.
Chu
A Kwang-Hua
AK
Department of Physics, Xinjiang University, Wulumuqi 830046, People's Republic of China and P. O. Box 30-15, Shanghai 200030, People's Republic of China.
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design / Q000379:methods; D019544:Equipment Failure Analysis / Q000379:methods; D005740:Gases / Q000737:chemistry*; D044085:Microfluidics / Q000295:instrumentation* / Q000379:methods*; D008956:Models, Chemical; D009038:Motion; D043942:Nanotubes / Q000737:chemistry*
D005740:Gases