Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Heat Transfer Simulation of Rarefied Laminar Flow past a Circular Cylinder
Date
2016-07-15
Author
Çelenligil, Mehmet Cevdet
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
199
views
0
downloads
Cite This
Direct simulation Monte Carlo calculations are performed to study the heat transfer in laminar, rarefied flows past a circular cylinder. Results are obtained for flows with Knudsen numbers of 0.02 and 0.2; Mach numbers of 0.102 and 0.4, and also several cylinder temperatures are considered. Calculations show that these flows are attached except for the one with a Knudsen number of 0.02 and a Mach number of 0.4 in which separation occurs in the wake of the cylinder. Results are little affected by the changes in the outflow boundary conditions but show sensitivity to the domain size due to the subsonic nature of the flows. Mach number of 0.4 results show that when the cylinder temperature is higher than the free stream temperature by less than 10 degrees C, a net heat transfer occurs from the air stream into the cylinder which indicates that the classical convection heat transfer equation needs to be modified under rarefied conditions. The findings are in agreement with the limited data available in the literature.
Subject Keywords
Flow past a cylinder
,
Rarefied flows
,
Laminar flows
,
Heat transfer
,
DSMC
URI
https://hdl.handle.net/11511/33165
DOI
https://doi.org/10.1063/1.4967577
Collections
Department of Aerospace Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
Numerical Simulation of Rarefied Laminar Flow past a Circular Cylinder
Çelenligil, Mehmet Cevdet (2014-07-18)
Numerical simulations have been obtained for two-dimensional laminar flows past a circular cylinder in the transitional regime. Computations are performed using the direct simulation Monte Carlo method for Knudsen numbers of 0.02 and 0.2 and Mach numbers of 0.102 and 0.4. For these conditions, Reynolds number ranges from 0.626 to 24.63 and the flows are steady. Results show that separation occurs in the wake region for the flow with Mach number of 0.4 and Knudsen number of 0.02, but for the other eases flow...
Heat transfer effects on the stability of low speed plane Couette-Poiseuille flow
Oezgen, Serkan; Dursunkaya, Zafer; Ebrinc, Ali Asian (Springer Science and Business Media LLC, 2007-10-01)
The stability problem of low-speed plane Couette-Poiseuille flow of air under heat transfer effects is solved numerically using the linear stability theory. Stability equations obtained from two-dimensional equations of motion and their boundary conditions result in an eigenvalue problem that is solved using an efficient shoot-search technique. Variable fluid properties are accounted for both in the basic flow and the perturbation (stability) equations. A parametric study is performed in order to assess the...
Heat transfer enhancement in water-feldspar upflows through vertical annuli
Ozbelge, TA; Koker, SH (1996-01-01)
Although there are many industrial applications of liquid-solid flows in technology, the available knowledge of heat transfer to or from such flows is limited. In this study the effects of parameters on the enhancement of heat transfer from water-feldspar slurries flowing turbulently upwards in vertical annuli were investigated and the experimental conditions beneficial to the enhancement of heat transfer were determined. It was found that the heat transfer enhancement in upflow of slurries through a vertic...
NUMERICAL ANALYSIS OF CONVECTIVE HEAT TRANSFER OF NANOFLUIDS FOR LAMINAR FLOW IN A CIRCULAR TUBE
Kirez, Oguz; Güvenç Yazıcıoğlu, Almıla; KAKAÇ, SADIK (2012-11-15)
In this study, a numerical analysis of heat transfer enhancement of Alumina/water nanofluid in a steady-state, single-phase, laminar flow in a circular duct is presented for the case of constant wall heat flux and constant wall temperature boundary conditions. The analysis is performed with a newly suggested model (Corcione) for effective thermal conductivity and viscosity, which show the effects of temperature and nanoparticle diameter. The results for Nusselt number and heat transfer enhancement are prese...
Numerical Simulation of Reciprocating Flow Forced Convection in Two-Dimensional Channels
Sert, Cüneyt (ASME International, 2003-5-20)
<jats:p>Numerical simulations of laminar, forced convection heat transfer for reciprocating, two-dimensional channel flows are performed as a function of the penetration length, Womersley (α) and Prandtl (Pr) numbers. The numerical algorithm is based on a spectral element formulation, which enables high-order spatial resolution with exponential decay of discretization errors, and second-order time-accuracy. Uniform heat flux and constant temperature boundary conditions are imposed on certain regions of the ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
M. C. Çelenligil, “Heat Transfer Simulation of Rarefied Laminar Flow past a Circular Cylinder,” 2016, vol. 1786, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33165.