Presentation is loading. Please wait.

Presentation is loading. Please wait.

Date of download: 10/9/2017 Copyright © ASME. All rights reserved.

Similar presentations


Presentation on theme: "Date of download: 10/9/2017 Copyright © ASME. All rights reserved."— Presentation transcript:

1 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Schematic of the gas-droplet wall jet propagating along the wall in the presence of heat flux: (1) air and water droplets and (2) main air flow

2 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Variation in momentum thickness at the injection of a single-phase jet; solid curve—calculation by formula , dashed line—calculation by this numerical model, and points—experimental data: (1) Ref. , (2) Ref. , and (3) Ref.

3 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Heat transfer in the cooling region: (1) calculation by the numerical model and (2) as predicted by Eq.

4 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Profiles of gaseous phase velocity at the injection of the gas-droplet wall jet: (1) x/S=0, (2) 25, (3) 50, (4) 100, (5) 150, and (6) 200 (qW=5 kW/m2, T1=373 K, TS=TLS=293 K, U1=50 m/s, dS=30 μm, m=0.8, MVS=0.014, MLS=0.05)

5 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Variation in droplet velocity in the two-phase jet over the channel length: (1) x/S=0, (2) 25, and (3) 50. Conditions adopted in the calculations are the same as in Fig. .

6 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Effect of droplet concentration MLS (a) and droplet diameter (b) on the gas-flow turbulence in the wall jet: (1) dS=10 μm, (2) 30 μm, (3) 50 μm, and (4) 100 μm(qW=5 kW/m2, T1=373 K, TS=TLS=293 K, U1=50 m/s, m=0.8, MVS=0.014, x/S=50)

7 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Distribution of flow quantities in the two-phase film flow over the channel cross section: (1) ML/MLS, (2) d/dS, (3) Θ, (4) ΘH, (5) U/U1, (6) (MVW−MV)/(MVW−M0), and (7) profile of Θ=U/U0=(y/δt)1/7(qW=5 kW/m2, T1=373 K, TS=TLS=293 K,U1=50 m/s, m=0.8, MVS=0.014, MLS=0.05, dS=30 μm, x/S=50)

8 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Profiles of the mass concentration of steam over the transverse coordinate: (1) x/S=25, (2) 50, (3) 100, (4) 150, and (5) 200. Conditions adopted in the calculations are the same as in Fig. .

9 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Wall surface temperature versus the droplet concentration in the two-phase jet: (1) MLS=0, (2) 0.005, (3) 0.01, (4) 0.025, (5) 0.05, (6) TS=TLS=293 K, and (7) T1=373 K(qW=5 kW/m2, T1=373 K, TS=TLS=293 K, U1=50 m/s, m=0.8, MVS=0.014, dS=30 μm)

10 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Heat transfer intensification ratio versus axial coordinate for air main-flow temperature: (1) T1=323 K, (2) 373 K, (3) 423 K, and (4) 473 K (qW=5 kW/m2, TS=TLS=293 K, U1=50 m/s, m=0.8, dS=30 μm, MVS=0.014, MLS=0.05)

11 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Heat transfer in the gas-droplet flow for various values of the relative heat flux q¯×103: (1) 1.4, (2) 2, (3) 2.8, and (4) 5.5 (T1=373 K, TS=TLS=293 K, U1=50 m/s, m=0.8, MVS=0.014, MLS=0.05)

12 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Effect of blowing ratio m on heat transfer augmentation: (1) x/S=25, (2) 50, (3) 100, and (4) 200 (qW=5 kW/m2, T1=373 K, TS=TLS=293 K, U1=50 m/s, MVS=0.014, MLS=0.05, x/S=50)

13 Date of download: 10/9/2017 Copyright © ASME. All rights reserved. From: Film-Cooling Enhancement of the Mist Vertical Wall Jet on the Cylindrical Channel Surface With Heat Transfer J. Heat Transfer. 2009;131(6): doi: / Figure Legend: Heat transfer in gas-droplet jets with different initial droplet diameters: dS=10 μm, (2) 30 μm, (3) 50 μm, and (4) 100 μm


Download ppt "Date of download: 10/9/2017 Copyright © ASME. All rights reserved."

Similar presentations


Ads by Google