The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer

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Izvoz citacije: ABNT
BERGANT, Robert ;TIŠELJ, Iztok .
The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 48, n.12, p. 696-706, july 2017. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/sl/article/the-influence-of-prandtl-number-on-near-wall-turbulent-heat-transfer/>. Date accessed: 20 oct. 2020. 
doi:http://dx.doi.org/.
Bergant, R., & Tišelj, I.
(2002).
The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer.
Strojniški vestnik - Journal of Mechanical Engineering, 48(12), 696-706.
doi:http://dx.doi.org/
@article{.,
	author = {Robert  Bergant and Iztok  Tišelj},
	title = {The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {48},
	number = {12},
	year = {2002},
	keywords = {near-wall flow; turbulent flow; heat transfer; Prandtl numbers; direct numerical simulation; },
	abstract = {For describing the heat transfer from a wall to a fluid at low Reynolds and Prandtl numbers we can use a direct mumerical simulation (DNS), which describes all the length and time scales of the phenomenon. The Reynolds number has a weak influence on the turbulent heat transfer (velocities, temperatures, RMSfluctuations ), whereas the increasing Prandtl number has a stronger influence. In our flow simulations in the channel, three different Prandtl numbers, i.e. Pr = 0.025, Pr = 1 and Pr = 5.4, at a Reynolds number Re » 5000 were analyzed. The resolution of the DNS for turbulent momentum transfer is proportional to Re3/4 in all directions. When considering heat transfer in fluids for a Prandtl number higher than one, the resolution is proportional to Re3/4Pr1/2. Three different numerical simulations at different resolutions were performed at Re = 5260 and Pr = 5.4. All three simulations are a DNS for the velocity field, whereas only the simulation at the highest resolution is also a DNS for the thermal field. The results showed that the thermal field could be accurately described with a lower resolution than theoretically required.},
	issn = {0039-2480},	pages = {696-706},	doi = {},
	url = {https://www.sv-jme.eu/sl/article/the-influence-of-prandtl-number-on-near-wall-turbulent-heat-transfer/}
}
Bergant, R.,Tišelj, I.
2002 July 48. The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 48:12
%A Bergant, Robert 
%A Tišelj, Iztok 
%D 2002
%T The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer
%B 2002
%9 near-wall flow; turbulent flow; heat transfer; Prandtl numbers; direct numerical simulation; 
%! The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer
%K near-wall flow; turbulent flow; heat transfer; Prandtl numbers; direct numerical simulation; 
%X For describing the heat transfer from a wall to a fluid at low Reynolds and Prandtl numbers we can use a direct mumerical simulation (DNS), which describes all the length and time scales of the phenomenon. The Reynolds number has a weak influence on the turbulent heat transfer (velocities, temperatures, RMSfluctuations ), whereas the increasing Prandtl number has a stronger influence. In our flow simulations in the channel, three different Prandtl numbers, i.e. Pr = 0.025, Pr = 1 and Pr = 5.4, at a Reynolds number Re » 5000 were analyzed. The resolution of the DNS for turbulent momentum transfer is proportional to Re3/4 in all directions. When considering heat transfer in fluids for a Prandtl number higher than one, the resolution is proportional to Re3/4Pr1/2. Three different numerical simulations at different resolutions were performed at Re = 5260 and Pr = 5.4. All three simulations are a DNS for the velocity field, whereas only the simulation at the highest resolution is also a DNS for the thermal field. The results showed that the thermal field could be accurately described with a lower resolution than theoretically required.
%U https://www.sv-jme.eu/sl/article/the-influence-of-prandtl-number-on-near-wall-turbulent-heat-transfer/
%0 Journal Article
%R 
%& 696
%P 11
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 48
%N 12
%@ 0039-2480
%8 2017-07-07
%7 2017-07-07
Bergant, Robert, & Iztok  Tišelj.
"The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer." Strojniški vestnik - Journal of Mechanical Engineering [Online], 48.12 (2002): 696-706. Web.  20 Oct. 2020
TY  - JOUR
AU  - Bergant, Robert 
AU  - Tišelj, Iztok 
PY  - 2002
TI  - The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 
KW  - near-wall flow; turbulent flow; heat transfer; Prandtl numbers; direct numerical simulation; 
N2  - For describing the heat transfer from a wall to a fluid at low Reynolds and Prandtl numbers we can use a direct mumerical simulation (DNS), which describes all the length and time scales of the phenomenon. The Reynolds number has a weak influence on the turbulent heat transfer (velocities, temperatures, RMSfluctuations ), whereas the increasing Prandtl number has a stronger influence. In our flow simulations in the channel, three different Prandtl numbers, i.e. Pr = 0.025, Pr = 1 and Pr = 5.4, at a Reynolds number Re » 5000 were analyzed. The resolution of the DNS for turbulent momentum transfer is proportional to Re3/4 in all directions. When considering heat transfer in fluids for a Prandtl number higher than one, the resolution is proportional to Re3/4Pr1/2. Three different numerical simulations at different resolutions were performed at Re = 5260 and Pr = 5.4. All three simulations are a DNS for the velocity field, whereas only the simulation at the highest resolution is also a DNS for the thermal field. The results showed that the thermal field could be accurately described with a lower resolution than theoretically required.
UR  - https://www.sv-jme.eu/sl/article/the-influence-of-prandtl-number-on-near-wall-turbulent-heat-transfer/
@article{{}{.},
	author = {Bergant, R., Tišelj, I.},
	title = {The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {48},
	number = {12},
	year = {2002},
	doi = {},
	url = {https://www.sv-jme.eu/sl/article/the-influence-of-prandtl-number-on-near-wall-turbulent-heat-transfer/}
}
TY  - JOUR
AU  - Bergant, Robert 
AU  - Tišelj, Iztok 
PY  - 2017/07/07
TI  - The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 48, No 12 (2002): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 
KW  - near-wall flow, turbulent flow, heat transfer, Prandtl numbers, direct numerical simulation, 
N2  - For describing the heat transfer from a wall to a fluid at low Reynolds and Prandtl numbers we can use a direct mumerical simulation (DNS), which describes all the length and time scales of the phenomenon. The Reynolds number has a weak influence on the turbulent heat transfer (velocities, temperatures, RMSfluctuations ), whereas the increasing Prandtl number has a stronger influence. In our flow simulations in the channel, three different Prandtl numbers, i.e. Pr = 0.025, Pr = 1 and Pr = 5.4, at a Reynolds number Re » 5000 were analyzed. The resolution of the DNS for turbulent momentum transfer is proportional to Re3/4 in all directions. When considering heat transfer in fluids for a Prandtl number higher than one, the resolution is proportional to Re3/4Pr1/2. Three different numerical simulations at different resolutions were performed at Re = 5260 and Pr = 5.4. All three simulations are a DNS for the velocity field, whereas only the simulation at the highest resolution is also a DNS for the thermal field. The results showed that the thermal field could be accurately described with a lower resolution than theoretically required.
UR  - https://www.sv-jme.eu/sl/article/the-influence-of-prandtl-number-on-near-wall-turbulent-heat-transfer/
Bergant, Robert, AND Tišelj, Iztok.
"The Influence of Prandtl Number on Near-Wall Turbulent Heat Transfer" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 48 Number 12 (07 July 2017)

Avtorji

Inštitucije

  • Institute Jožef Štefan, Ljubljana, Slovenia
  • Institute Jožef Štefan, Ljubljana, Slovenia

Informacije o papirju

Strojniški vestnik - Journal of Mechanical Engineering 48(2002)12, 696-706

For describing the heat transfer from a wall to a fluid at low Reynolds and Prandtl numbers we can use a direct mumerical simulation (DNS), which describes all the length and time scales of the phenomenon. The Reynolds number has a weak influence on the turbulent heat transfer (velocities, temperatures, RMSfluctuations ), whereas the increasing Prandtl number has a stronger influence. In our flow simulations in the channel, three different Prandtl numbers, i.e. Pr = 0.025, Pr = 1 and Pr = 5.4, at a Reynolds number Re » 5000 were analyzed. The resolution of the DNS for turbulent momentum transfer is proportional to Re3/4 in all directions. When considering heat transfer in fluids for a Prandtl number higher than one, the resolution is proportional to Re3/4Pr1/2. Three different numerical simulations at different resolutions were performed at Re = 5260 and Pr = 5.4. All three simulations are a DNS for the velocity field, whereas only the simulation at the highest resolution is also a DNS for the thermal field. The results showed that the thermal field could be accurately described with a lower resolution than theoretically required.

near-wall flow; turbulent flow; heat transfer; Prandtl numbers; direct numerical simulation;