Evaluating the Combined Effects of Transverse Pitch Ratio and Flow Arrangement on the Thermo-Hydraulic  Performance of a Novel Inclined Delta Winglet

Hüseyin Zahit Demirağ

Makale detayları

Evaluating the Combined Effects of Transverse Pitch Ratio and Flow Arrangement on the Thermo-Hydraulic Performance of a Novel Inclined Delta Winglet

Yazarlar:

Hüseyin Zahit Demirağ

Yayıncı:

Hitit University

Ana Başlıklar:

Computational Methods in Fluid Flow | Heat and Mass Transfer (Incl. Computational Fluid Dynamics)

Dergi:

Hittite Journal of Science and Engineering Vol.11 Issue 4, pp.169-180

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001337655

pISSN:

2148-4171

Anahtar kelimeler:

Özet:

 In this work, the in-depth examinations of the Novel Inclined Delta Winglet NIDW in terms of heat transfer performance and the flow characteristics are conducted at Re5000-17500, utilizing SST k-ω turbulence model. In accordance with the objective of this investigation, the combined effects of the positioning of the NIDW in common-flow-down NIDW-CFlowD and common-flow-up NIDW-CFlowU orientations together with two transverse pitch ratios Pt0.333 and 0.166 are investigated and the resulting data are presented in a comparative manner. The angle of attack α30 and the angle of inclination β30 of the NIDW are kept constant. The numerical results indicate that the NIDW-CFlowD orientation at Pt0.333 has more pronounced effect in terms of thermal performance, with an approximate increase of 4.29 increase in the Nusselt number at Re17500, whereas the opposite trend is observed at Pt0.166, yielding a smaller rise of around 3.13 in Nusselt number at Re17500. The reversal in trend is entirely due to the positioning of the NIDW in the CFlowD orientation, which causes the vortex rotation centers to move further apart in the main flow direction, resulting in 4.36 and 4.02 higher Darcy friction factors in cases of Pt0.333 and Pt0.166, respectively compared to CFlowU configuration at Re5000. Therefore, the highest and lowest ranges of Thermal Enhancement Factor TEF are calculated to be between 1.325-1.215 and 1.221-1.122 for the cases of NIDW-CFlowU with Pt0.166 and NIDW-CFlowU with Pt0.333 respectively. This corresponds to an increase in TEF of around 8.52and 8.30 increase in TEF at Re5000 and 17000, respectively.

 In this work, the in-depth examinations of the Novel Inclined Delta Winglet NIDW in terms of heat transfer performance and the flow characteristics are conducted at Re5000-17500, utilizing SST k-ω turbulence model. In accordance with the objective of this investigation, the combined effects of the positioning of the NIDW in common-flow-down NIDW-CFlowD and common-flow-up NIDW-CFlowU orientations together with two transverse pitch ratios Pt0.333 and 0.166 are investigated and the resulting data are presented in a comparative manner. The angle of attack α30 and the angle of inclination β30 of the NIDW are kept constant. The numerical results indicate that the NIDW-CFlowD orientation at Pt0.333 has more pronounced effect in terms of thermal performance, with an approximate increase of 4.29 increase in the Nusselt number at Re17500, whereas the opposite trend is observed at Pt0.166, yielding a smaller rise of around 3.13 in Nusselt number at Re17500. The reversal in trend is entirely due to the positioning of the NIDW in the CFlowD orientation, which causes the vortex rotation centers to move further apart in the main flow direction, resulting in 4.36 and 4.02 higher Darcy friction factors in cases of Pt0.333 and Pt0.166, respectively compared to CFlowU configuration at Re5000. Therefore, the highest and lowest ranges of Thermal Enhancement Factor TEF are calculated to be between 1.325-1.215 and 1.221-1.122 for the cases of NIDW-CFlowU with Pt0.166 and NIDW-CFlowU with Pt0.333 respectively. This corresponds to an increase in TEF of around 8.52and 8.30 increase in TEF at Re5000 and 17000, respectively.

 In this work, the in-depth examinations of the Novel Inclined Delta Winglet NIDW in terms of heat transfer performance and the flow characteristics are conducted at Re5000-17500, utilizing SST k-ω turbulence model. In accordance with the objective of this investigation, the combined effects of the positioning of the NIDW in common-flow-down NIDW-CFlowD and common-flow-up NIDW-CFlowU orientations together with two transverse pitch ratios Pt0.333 and 0.166 are investigated and the resulting data are presented in a comparative manner. The angle of attack α30 and the angle of inclination β30 of the NIDW are kept constant. The numerical results indicate that the NIDW-CFlowD orientation at Pt0.333 has more pronounced effect in terms of thermal performance, with an approximate increase of 4.29 increase in the Nusselt number at Re17500, whereas the opposite trend is observed at Pt0.166, yielding a smaller rise of around 3.13 in Nusselt number at Re17500. The reversal in trend is entirely due to the positioning of the NIDW in the CFlowD orientation, which causes the vortex rotation centers to move further apart in the main flow direction, resulting in 4.36 and 4.02 higher Darcy friction factors in cases of Pt0.333 and Pt0.166, respectively compared to CFlowU configuration at Re5000. Therefore, the highest and lowest ranges of Thermal Enhancement Factor TEF are calculated to be between 1.325-1.215 and 1.221-1.122 for the cases of NIDW-CFlowU with Pt0.166 and NIDW-CFlowU with Pt0.333 respectively. This corresponds to an increase in TEF of around 8.52and 8.30 increase in TEF at Re5000 and 17000, respectively.

 In this work, the in-depth examinations of the Novel Inclined Delta Winglet NIDW in terms of heat transfer performance and the flow characteristics are conducted at Re5000-17500, utilizing SST k-ω turbulence model. In accordance with the objective of this investigation, the combined effects of the positioning of the NIDW in common-flow-down NIDW-CFlowD and common-flow-up NIDW-CFlowU orientations together with two transverse pitch ratios Pt0.333 and 0.166 are investigated and the resulting data are presented in a comparative manner. The angle of attack α30 and the angle of inclination β30 of the NIDW are kept constant. The numerical results indicate that the NIDW-CFlowD orientation at Pt0.333 has more pronounced effect in terms of thermal performance, with an approximate increase of 4.29 increase in the Nusselt number at Re17500, whereas the opposite trend is observed at Pt0.166, yielding a smaller rise of around 3.13 in Nusselt number at Re17500. The reversal in trend is entirely due to the positioning of the NIDW in the CFlowD orientation, which causes the vortex rotation centers to move further apart in the main flow direction, resulting in 4.36 and 4.02 higher Darcy friction factors in cases of Pt0.333 and Pt0.166, respectively compared to CFlowU configuration at Re5000. Therefore, the highest and lowest ranges of Thermal Enhancement Factor TEF are calculated to be between 1.325-1.215 and 1.221-1.122 for the cases of NIDW-CFlowU with Pt0.166 and NIDW-CFlowU with Pt0.333 respectively. This corresponds to an increase in TEF of around 8.52and 8.30 increase in TEF at Re5000 and 17000, respectively.

Makale detayları

Evaluating the Combined Effects of Transverse Pitch Ratio and Flow Arrangement on the Thermo-Hydraulic Performance of a Novel Inclined Delta Winglet

Yazarlar:

Hüseyin Zahit Demirağ

Yayıncı:

Hitit University

Ana Başlıklar:

Computational Methods in Fluid Flow | Heat and Mass Transfer (Incl. Computational Fluid Dynamics)

Dergi:

Hittite Journal of Science and Engineering Vol.11 Issue 4, pp.169-180

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001337655

pISSN:

2148-4171

Novel inclined delta winglet

common-flow-up/down orientations

turbulent flow

transverse pitch ratio

thermo-hydraulic performance

Sayı

Makale detayları

Evaluating the Combined Effects of Transverse Pitch Ratio and Flow Arrangement on the Thermo-Hydraulic Performance of a Novel Inclined Delta Winglet

Yazarlar: Hüseyin Zahit Demirağ

Yayıncı: Hitit University

Ana Başlıklar: Computational Methods in Fluid Flow | Heat and Mass Transfer (Incl. Computational Fluid Dynamics)

Dergi: Hittite Journal of Science and Engineering Vol.11 Issue 4, pp.169-180

Belge Tipi: Makale

Yayın Tarihi: 12/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001337655

pISSN: 2148-4171

Novel inclined delta winglet

common-flow-up/down orientations

turbulent flow

transverse pitch ratio

thermo-hydraulic performance

Sayı

Yazarlar:

Hüseyin Zahit Demirağ

Yayıncı:

Hitit University

Ana Başlıklar:

Computational Methods in Fluid Flow | Heat and Mass Transfer (Incl. Computational Fluid Dynamics)

Dergi:

Hittite Journal of Science and Engineering Vol.11 Issue 4, pp.169-180

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001337655

pISSN:

2148-4171