3D study of temperature drop behavior of subsonic rarefied gas flow in microchannel |
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| Authors: | Niraj Shah Amit Agrawal |
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| Affiliation: | 1. Mechanical Engineering Department, Institute of Technology, Nirma University, Ahmedabad, India;2. Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai, India |
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| 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. |
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