EFFECT OF MICRO-CHANNEL WALL THICKNESS AND DIAMETER ON INLET GAS TEMPERATURE AND VELOCITY UNDER THE INFLUENCE OF THERMAL CREEPING

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BEHROOZI BEHROOZ; GHASSEMI MAJID

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Journal: Modares Mechanical Engineering Year:2017 | Volume:17 | Issue:4 Page(s): 154-160

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Title

EFFECT OF MICRO-CHANNEL WALL THICKNESS AND DIAMETER ON INLET GAS TEMPERATURE AND VELOCITY UNDER THE INFLUENCE OF THERMAL CREEPING

Author(s)

BEHROOZI BEHROOZ | GHASSEMI MAJID | Issue Writer Certificate

Keywords

MICRO- CHANNELQ1

THERMAL CREEPQ1

THERMAL SIMULATIONQ1

SLIP CONDITIONQ1

Abstract

With the development of micro-mechanical systems, researchers have become interested in concentrating on the small-scale impact on the flow and heat transfer in micro-channels. A microchannel is required for a gas sensor to guide the gas flow. Reducing the size of channel has led scientists to concentrate on micro-sensor. Metal oxide gas micro- sensors are used to detect gases such as O3, SO2, CO2, NO, NH3, CH4, etc. Metal oxide gas micro-sensors are small in size, cheaper to fabricate and consume little power. The purpose of the current study is to numerically investigate the micro-channel wall thickness and diameter on gas inlet temperature under the influence of THERMAL CREEPing. The governing nonlinear differential equations, mass, momentum, energy, and species, are coupled and solved by a commercial code. The channel is assumed to be two dimensional. Since the Knudsen number is between 0.01 and 0.1, the slip boundary condition, Maxwell equation, is utilized. The result shows that as wall thickness increases the gas inlet temperature increases and temperature difference between gas inlet and outlet decreases. On the other hand, as channel diameter decreases the gas inlet temperature increases.

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APA: Copy

BEHROOZI, BEHROOZ, & GHASSEMI, MAJID. (2017). EFFECT OF MICRO-CHANNEL WALL THICKNESS AND DIAMETER ON INLET GAS TEMPERATURE AND VELOCITY UNDER THE INFLUENCE OF THERMAL CREEPING. MODARES MECHANICAL ENGINEERING, 17(4 ), 154-160. SID. https://sid.ir/paper/178877/en

Vancouver: Copy

BEHROOZI BEHROOZ, GHASSEMI MAJID. EFFECT OF MICRO-CHANNEL WALL THICKNESS AND DIAMETER ON INLET GAS TEMPERATURE AND VELOCITY UNDER THE INFLUENCE OF THERMAL CREEPING. MODARES MECHANICAL ENGINEERING[Internet]. 2017;17(4 ):154-160. Available from: https://sid.ir/paper/178877/en

IEEE: Copy

BEHROOZ BEHROOZI, and MAJID GHASSEMI, “EFFECT OF MICRO-CHANNEL WALL THICKNESS AND DIAMETER ON INLET GAS TEMPERATURE AND VELOCITY UNDER THE INFLUENCE OF THERMAL CREEPING,” MODARES MECHANICAL ENGINEERING, vol. 17, no. 4 , pp. 154–160, 2017, [Online]. Available: https://sid.ir/paper/178877/en

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