Click for new scientific resources and news about Corona[COVID-19]

Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   JULY 2017 , Volume 17 , Number 4 ; Page(s) 154 To 160.
 
Paper: 

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*
 
* FACULTY OF MECHANICAL ENGINEERING, KHAJE NASIR TOOSI UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN
 
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.

 
Keyword(s): MICRO- CHANNEL, THERMAL CREEP, THERMAL SIMULATION, SLIP CONDITION
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 46
 
Latest on Blog
Enter SID Blog