Convective Heat Transfer Inside Rotational Cascades with Flat Blades

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MORI, Mitja ;NOVAK, Lovrenc ;SEKAVČNIK, Mihael .
Convective Heat Transfer Inside Rotational Cascades with Flat Blades. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 49, n.9, p. 445-457, july 2017. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/convective-heat-transfer-inside-rotational-cascades-with-flat-blades/>. Date accessed: 02 jun. 2020. 
doi:http://dx.doi.org/.
Mori, M., Novak, L., & Sekavčnik, M.
(2003).
Convective Heat Transfer Inside Rotational Cascades with Flat Blades.
Strojniški vestnik - Journal of Mechanical Engineering, 49(9), 445-457.
doi:http://dx.doi.org/
@article{.,
	author = {Mitja  Mori and Lovrenc  Novak and Mihael  Sekavčnik},
	title = {Convective Heat Transfer Inside Rotational Cascades with Flat Blades},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {49},
	number = {9},
	year = {2003},
	keywords = {gas turbines; convective cooling; Nusselt number; numerical analysis; },
	abstract = {In this paper we present a numerical approach to determining the variation of rotational speed with the convective heat transfer of blade structures. The investigated structure, which is cooled by air, was subjected to an axial hot-air stream in a cross-flow system. In order to exclude the influence of undesirable, aerodynamic flow forces, a simplified geometry was chosen, and the influence of varying the rotational speed was studied. The distributions of heat-transfer rate on the hot side of the structure’s wall were determined with CFD calculations. The non-uniformity of the heat transfer increased with the rotational speed due to the increasing impact of centrifugal flow forces on the boundary-layer thickness. The impact of rotational speed on the heat-transfer rate was found not to be significant. The results of the studied structure were also used to validate various one-dimensional, empirical, convective heat-transfer models that are commonly applied in engineering practice. In all cases, the flat-wall heat-transfer treatment showed the best agreement with the results of the CFD calculations.},
	issn = {0039-2480},	pages = {445-457},	doi = {},
	url = {https://www.sv-jme.eu/article/convective-heat-transfer-inside-rotational-cascades-with-flat-blades/}
}
Mori, M.,Novak, L.,Sekavčnik, M.
2003 July 49. Convective Heat Transfer Inside Rotational Cascades with Flat Blades. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 49:9
%A Mori, Mitja 
%A Novak, Lovrenc 
%A Sekavčnik, Mihael 
%D 2003
%T Convective Heat Transfer Inside Rotational Cascades with Flat Blades
%B 2003
%9 gas turbines; convective cooling; Nusselt number; numerical analysis; 
%! Convective Heat Transfer Inside Rotational Cascades with Flat Blades
%K gas turbines; convective cooling; Nusselt number; numerical analysis; 
%X In this paper we present a numerical approach to determining the variation of rotational speed with the convective heat transfer of blade structures. The investigated structure, which is cooled by air, was subjected to an axial hot-air stream in a cross-flow system. In order to exclude the influence of undesirable, aerodynamic flow forces, a simplified geometry was chosen, and the influence of varying the rotational speed was studied. The distributions of heat-transfer rate on the hot side of the structure’s wall were determined with CFD calculations. The non-uniformity of the heat transfer increased with the rotational speed due to the increasing impact of centrifugal flow forces on the boundary-layer thickness. The impact of rotational speed on the heat-transfer rate was found not to be significant. The results of the studied structure were also used to validate various one-dimensional, empirical, convective heat-transfer models that are commonly applied in engineering practice. In all cases, the flat-wall heat-transfer treatment showed the best agreement with the results of the CFD calculations.
%U https://www.sv-jme.eu/article/convective-heat-transfer-inside-rotational-cascades-with-flat-blades/
%0 Journal Article
%R 
%& 445
%P 13
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 49
%N 9
%@ 0039-2480
%8 2017-07-07
%7 2017-07-07
Mori, Mitja, Lovrenc  Novak, & Mihael  Sekavčnik.
"Convective Heat Transfer Inside Rotational Cascades with Flat Blades." Strojniški vestnik - Journal of Mechanical Engineering [Online], 49.9 (2003): 445-457. Web.  02 Jun. 2020
TY  - JOUR
AU  - Mori, Mitja 
AU  - Novak, Lovrenc 
AU  - Sekavčnik, Mihael 
PY  - 2003
TI  - Convective Heat Transfer Inside Rotational Cascades with Flat Blades
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 
KW  - gas turbines; convective cooling; Nusselt number; numerical analysis; 
N2  - In this paper we present a numerical approach to determining the variation of rotational speed with the convective heat transfer of blade structures. The investigated structure, which is cooled by air, was subjected to an axial hot-air stream in a cross-flow system. In order to exclude the influence of undesirable, aerodynamic flow forces, a simplified geometry was chosen, and the influence of varying the rotational speed was studied. The distributions of heat-transfer rate on the hot side of the structure’s wall were determined with CFD calculations. The non-uniformity of the heat transfer increased with the rotational speed due to the increasing impact of centrifugal flow forces on the boundary-layer thickness. The impact of rotational speed on the heat-transfer rate was found not to be significant. The results of the studied structure were also used to validate various one-dimensional, empirical, convective heat-transfer models that are commonly applied in engineering practice. In all cases, the flat-wall heat-transfer treatment showed the best agreement with the results of the CFD calculations.
UR  - https://www.sv-jme.eu/article/convective-heat-transfer-inside-rotational-cascades-with-flat-blades/
@article{{}{.},
	author = {Mori, M., Novak, L., Sekavčnik, M.},
	title = {Convective Heat Transfer Inside Rotational Cascades with Flat Blades},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {49},
	number = {9},
	year = {2003},
	doi = {},
	url = {https://www.sv-jme.eu/article/convective-heat-transfer-inside-rotational-cascades-with-flat-blades/}
}
TY  - JOUR
AU  - Mori, Mitja 
AU  - Novak, Lovrenc 
AU  - Sekavčnik, Mihael 
PY  - 2017/07/07
TI  - Convective Heat Transfer Inside Rotational Cascades with Flat Blades
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 49, No 9 (2003): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 
KW  - gas turbines, convective cooling, Nusselt number, numerical analysis, 
N2  - In this paper we present a numerical approach to determining the variation of rotational speed with the convective heat transfer of blade structures. The investigated structure, which is cooled by air, was subjected to an axial hot-air stream in a cross-flow system. In order to exclude the influence of undesirable, aerodynamic flow forces, a simplified geometry was chosen, and the influence of varying the rotational speed was studied. The distributions of heat-transfer rate on the hot side of the structure’s wall were determined with CFD calculations. The non-uniformity of the heat transfer increased with the rotational speed due to the increasing impact of centrifugal flow forces on the boundary-layer thickness. The impact of rotational speed on the heat-transfer rate was found not to be significant. The results of the studied structure were also used to validate various one-dimensional, empirical, convective heat-transfer models that are commonly applied in engineering practice. In all cases, the flat-wall heat-transfer treatment showed the best agreement with the results of the CFD calculations.
UR  - https://www.sv-jme.eu/article/convective-heat-transfer-inside-rotational-cascades-with-flat-blades/
Mori, Mitja, Novak, Lovrenc, AND Sekavčnik, Mihael.
"Convective Heat Transfer Inside Rotational Cascades with Flat Blades" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 49 Number 9 (07 July 2017)

Authors

Affiliations

  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia
  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia
  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 49(2003)9, 445-457

In this paper we present a numerical approach to determining the variation of rotational speed with the convective heat transfer of blade structures. The investigated structure, which is cooled by air, was subjected to an axial hot-air stream in a cross-flow system. In order to exclude the influence of undesirable, aerodynamic flow forces, a simplified geometry was chosen, and the influence of varying the rotational speed was studied. The distributions of heat-transfer rate on the hot side of the structure’s wall were determined with CFD calculations. The non-uniformity of the heat transfer increased with the rotational speed due to the increasing impact of centrifugal flow forces on the boundary-layer thickness. The impact of rotational speed on the heat-transfer rate was found not to be significant. The results of the studied structure were also used to validate various one-dimensional, empirical, convective heat-transfer models that are commonly applied in engineering practice. In all cases, the flat-wall heat-transfer treatment showed the best agreement with the results of the CFD calculations.

gas turbines; convective cooling; Nusselt number; numerical analysis;