3D study of temperature drop behavior of subsonic rarefied gas flow in microchannel. (3rd May 2018)

• Record Type: Journal Article
• Authors: Shah, Niraj; Agrawal, Amit; Bhandarkar, Upendra
• Is Part Of: Numerical heat transfer. Volume 73:Number 9(2018)
• Page Start: 654
• Page End: 665
• Publication Date: 2018-05-03
• Subjects: Heat -- Transmission -- Measurement -- Periodicals; Mass transfer -- Measurement -- Periodicals; Numerical analysis -- Periodicals; 621.4022
• DOI: 10.1080/10407782.2018.1461493
• Languages: English
• ISSNs: 1040-7782

Abstract

Abstract: 3D Numerical study of temperature variation for subsonic rarefied gas flow in a microchannel is carried out using an in-house MPI-based parallelized DSMC code. The temperature drop in the microchannel decreases with an increase in the aspect ratio whereas it increases with an increase in the pressure ratio, the cross-aspect ratio (CAR), and the Knudsen number. 3D and 2D simulations results are compared and effect of the CAR and Knudsen number are brought out. Finally, a correlation that predicts the temperature drop is formulated along with a list of conditions that ensures a near isothermal flow.