Thermal radiation effect on the flow field and heat transfer of Co3O4-diamond/EG hybrid nanofluid using experimental data: A numerical study

2019 ◽  
Vol 134 (1) ◽  
Author(s):  
Ali Akbar Abbasian Arani ◽  
Farhad Monfaredi ◽  
Alireza Aghaei ◽  
Masoud Afrand ◽  
Ali J. Chamkha ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Flow Field ◽  
Thermal Radiation ◽  
Radiation Effect ◽  
Numerical Study ◽  
Hybrid Nanofluid ◽  
Thermal Radiation Effect

Numerical Simulation of Heat Transfer Characteristics for Two Metallic TPS Structures

2010 ◽  
Vol 156-157 ◽  
pp. 1568-1573
Author(s):  
Hai Yong Liu ◽  
Hong Fu Qiang
Keyword(s):  
Heat Transfer ◽  
Thermal Radiation ◽  
Heat Conductivity ◽  
Radiation Effect ◽  
Thermal Protection ◽  
Heating Temperature ◽  
Three Dimensional ◽  
Metallic Layer ◽  
Internal Cooling ◽  
Thermal Radiation Effect

Two structures of metallic thermal protection system(TPS) for hypersonic vehicle were presented. One model was a multi-layer construction and the other has cavities in the metallic layer. Numerical simulations were conducted on the three-dimensional TPS models using CFD software of Gambit and Fluent. Two heating temperatures of 1073K and 773K with constant temperature and isothermal boundary conditions were considered. Heat transfer was treated as single conductivity and thermal radiation effect was not involved. The results of simulation investigation showed that: The metallic layer had poor capability to restrict the heat conductivity. Heat was easier to transfer across the bracket into the internal part of the TPS. The ability of cavities in metallic layer to resist heat conductivity was limited. The temperature-heating time variation pattern was similar for different external heating temperature. Internal cooling was important for the TPS. The thermal radiation effect on the TPS would be focused in further research.

scholarly journals Numerical Analysis of Cu + Al 2 O 3 / H 2 O Hybrid Nanofluid of Streamwise and Cross Flow with Thermal Radiation Effect: Duality and Stability

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Sumera Dero ◽  
Liaquat Ali Lund ◽  
Zahir Shah ◽  
Ebenezer Bonyah ◽  
Wejdan Deebani
Keyword(s):  
Differential Equations ◽  
Thermal Radiation ◽  
Radiation Effect ◽  
Nonlinear Partial Differential Equations ◽  
Upper And Lower Solutions ◽  
Temporal Stability ◽  
Cross Flow ◽  
Hybrid Nanofluid ◽  
Thermal Layer ◽  
Thermal Radiation Effect

The motion of water conveying copper and aluminum nanoparticles on a heated moving sheet when thermal radiation and stretching/shrinking surface is significant and is investigated in this study to announce the increasing effects of volume fractions, thermal radiation, and moving parameters on this transport phenomenon. Furthermore, the flow of a Cu − Al 2 O 3 /water hybrid nanofluid across a heated moving sheet has been studied in both cross and streamwise directions. Thermal radiation effect is also considered, as this effect along with cross flow has not yet been investigated for the hybrid nanofluid in the published literature. Two distinct types of nanoparticles, namely, Al 2 O 3 (alumina) and Cu (copper), have been used to prepare hybrid nanofluid where water is considered as a base fluid. The system of nonlinear partial differential equations (PDEs) has been transferred to ordinary differential equations (ODEs) by compatible transformations before solving them by employing the III-stage Lobatto-IIIa method in bvp4c solver in MATLAB 2017 software. Temporal stability analysis has been carried out in order to verify stable branch between two branches by obtaining the smallest eigenvalue values. The branches obtained are addressed in depth against every applied parameter using figures and tables. The results show that there are three ranges of branches, no solution exists when λ > λ c , dual branches exist when 0.23 ≤ λ ≤ λ c , and a single solution exists when λ > 0.23 . Moreover, thermal layer thickness declines initially and then enhances in the upper and lower solutions for the higher values of the thermal radiation parameter.

Thermal Radiation Effect on 3D Slip Motion of Alcu-Water and Cu-Water Nanofluids over a Variable Thickness Stretched Surface

2017 ◽  
Vol 377 ◽  
pp. 141-154 ◽  
Author(s):  
P. Mohan Krishna ◽  
N. Sandeep ◽  
Ram Prakash Sharma ◽  
Oluwole Daniel Makinde
Keyword(s):  
Heat Transfer ◽  
Thermal Radiation ◽  
Radiation Effect ◽  
Skin Friction Coefficient ◽  
Slip Effect ◽  
Uniform Thickness ◽  
Thermal Radiation Effect ◽  
Parameters Of Interest ◽  
Slip Motion ◽  
Newton's Methods

The current paper covers the examination of 3D nanofluid motion over a slendering expanding sheet under the influence of slip effect and thermal radiation. In this study, we considered the Cu-water and Al50Cu50-water nanofluids over a non-uniform thickness expanding sheet. With the help of similitude transformations, we changed the derived governed equations as ordinary differential equations. The mathematical outcomes determined by using Runge-Kutta and Newton’s methods. We reveal and interpret the graphs for different parameters of interest. We discussed the skin friction coefficient and reduced Nusselt number at different pertinent parameters. Results shown that the rate of heat transfer is higher in Al50Cu50-water nanofluid when compared with Cu-water nanofluid.

Thermal radiation effect on MHD flow and heat transfer of Williamson nanofluids over a stretching sheet with Newtonian heating

2017 ◽  
Author(s):  
Kho Yap Bing ◽  
Abid Hussanan ◽  
Muhammad Khairul Anuar Mohamed ◽  
Norhafizah Mohd Sarif ◽  
Zulkhibri Ismail ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Thermal Radiation ◽  
Radiation Effect ◽  
Stretching Sheet ◽  
Mhd Flow ◽  
Newtonian Heating ◽  
Flow And Heat Transfer ◽  
Thermal Radiation Effect
Sign in / Sign up

Export Citation Format

Share Document