Free Molecule Heat Transfer between Parallel Plates

1964 ◽  
Vol 7 (3) ◽  
pp. 473 ◽  
Author(s):  
E. M. Sparrow ◽  
R. B. Kinney
Keyword(s):  
Heat Transfer ◽  
Free Molecule ◽  
Parallel Plates

Theoretical Two-Dimensional Modeling of Gas Conduction Between Finite Parallel Plates in High Vacuum

2012 ◽  
Vol 134 (5) ◽  
Author(s):  
Taishan Zhu ◽  
Wenjing Ye
Keyword(s):  
Heat Transfer ◽  
High Vacuum ◽  
Finite Size ◽  
Direct Simulation Monte Carlo ◽  
Free Molecule ◽  
Mems Devices ◽  
Parallel Plates ◽  
Thermal Accommodation ◽  
Representative Model ◽  
Gas Conduction

A theoretical approach based on gaskinetic theory is described and applied for the modeling of steady-state free-molecule gaseous heat conduction within a diffusive enclosure. With a representative model of microelectromechanical system (MEMS) devices with integrated heaters, the heat transfer between the heated component and its gaseous ambient enclosed in a high vacuum is studied in detail. A molecular simulation based on the direct simulation Monte Carlo (DSMC) method is also employed to validate the theoretical solutions and to study the effects of incomplete thermal accommodation. The impacts of the finite size of the heated beam as well as the gap between the beam and a substrate on the heat transfer are investigated to examine the appropriateness of the common assumptions employed in the modeling of Pirani sensors. Interesting phenomena that are unique in the free-molecule regime are observed and discussed. These studies are valuable to the design of MEMS devices with microheaters.

scholarly journals Effects of hybrid nanofluid on novel fractional model of heat transfer flow between two parallel plates

2021 ◽  
Vol 60 (4) ◽  
pp. 3593-3604
Author(s):  
Muhammad Danish Ikram ◽  
Muhammad Imran Asjad ◽  
Ali Akgül ◽  
Dumitru Baleanu
Keyword(s):  
Heat Transfer ◽  
Hybrid Nanofluid ◽  
Parallel Plates ◽  
Fractional Model ◽  
Transfer Flow

Magnetohydrodynamic heat transfer in two-phase flow between parallel plates

1988 ◽  
Vol 45 (1) ◽  
pp. 53-66 ◽  
Author(s):  
Jahanshah Lohrasbi ◽  
Vireshwar Sahai
Keyword(s):  
Heat Transfer ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Parallel Plates ◽  
Two Phase

Numerical Prediction of Flow and Heat Transfer in a Parallel Plate Channel With Staggered Fins

1987 ◽  
Vol 109 (1) ◽  
pp. 25-30 ◽  
Author(s):  
K. M. Kelkar ◽  
S. V. Patankar
Keyword(s):  
Heat Transfer ◽  
Local Heat Transfer ◽  
Periodic Variation ◽  
Local Heat ◽  
Temperature Fields ◽  
Parallel Plates ◽  
Constant Property ◽  
Cross Sectional ◽  
Flow And Heat Transfer ◽  
Order Of Magnitude

Fluid flow and heat transfer in two-dimensional finned passages were analyzed for constant property laminar flow. The passage is formed by two parallel plates to which fins are attached in a staggered fashion. Both the plates are maintained at a constant temperature. Streamwise periodic variation of the cross-sectional area causes the flow and temperature fields to repeat periodically after a certain developing length. Computations were performed for different values of the Reynolds number, the Prandtl number, geometric parameters, and the fin-conductance parameter. The fins were found to cause the flow to deflect significantly and impinge upon the opposite wall so as to increase the heat transfer significantly. However, the associated increase in pressure drop was an order of magnitude higher than the increase in heat transfer. Streamline patterns and local heat transfer results are presented in addition to the overall results.

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