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Effect of Ratio of Protrusion Height to Print Diameter on Thermal Behaviour of Al2O3–H2O Nanofluid Flow in a Protrusion Obstacle Square Channel

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Intelligent Communication, Control and Devices

Part of the book series: Advances in Intelligent Systems and Computing ((AISC,volume 624))

Abstract

Thermal behaviour of turbulent alumina nanofluids flow in a protrusion obstacles square channel is numerically investigated. The ratio of protrusion height to print diameter varied from 0.83 to 1.67, streamwise spacing of 1.8, spanwise spacing of 1.8, size of nanoparticles of 30 nm, and concentration of 4.0%. The computations are performed under uniform heat flux over a range of Reynolds number varied from 4,000 to 18,000. The best improvement in thermal performance is observed to be 4.35 times higher over smooth surface square duct for the ratio of protrusion height to print diameter of 1.0.

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Abbreviations

d p :

Print diameter of protrusion obstacles, mm

D :

Hydraulic diameter, mm

e p :

Height of protrusion, mm

f :

Friction factor

f rsave :

Average flow friction of rough surface

E :

Energy, J

f ssave :

Average flow friction of smooth surface

I :

Heat flux, W/m2

k :

Turbulent Kinetic energy, m2/s2

Re n :

Reynolds number

M t :

Turbulent Mach number

P r :

Prandtl number

P rt :

Turbulent Prandtl number

v :

Total velocity, m/s

u :

Velocity in X-direction, m/s

X s /d p :

Streamwise spacing

Y + :

Dimensionless distance from walls

Y s /d p :

Spanwise spacing

∆Pave:

Average pressure drop across

e p /d p :

Protrusion height to print diameter

Nu rsave :

Average Nusselt number of rough wall

Nu ssave :

Average Nusselt number without protrusion wall

µ :

Dynamic Viscosity, Ns/m2

ρ :

Density, kg/m3

µ t :

Turbulent Viscosity, Ns/m2

η o, β o :

Model Constant

η p :

Hydraulic thermal parameter

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Author information

Authors and Affiliations

  1. School of Mechanical and Civil Engineering, Shoolini University, Solan, India

    Sunil Kumar & Anil Kumar

  2. Uttarakhand Technical University, Dehradun, India

    Sunil Kumar

  3. Baba Farid Institute and Technology Dehradun, Dehradun, Uttarakhand, India

    Alok Darshan Kothiyal

  4. Govind Ballabh Pant Engineering College Pauri Garhwal, Pauri, Uttarakhand, India

    Mangal Singh Bisht

Authors
  1. Sunil Kumar
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  2. Alok Darshan Kothiyal
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  3. Mangal Singh Bisht
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  4. Anil Kumar
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Corresponding author

Correspondence to Sunil Kumar .

Editor information

Editors and Affiliations

  1. Institute of Robotics Technology (R&D), University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India

    Rajesh Singh

  2. Department of Electronics & Instrumentation Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India

    Sushabhan Choudhury

  3. Department of Electronics & Instrumentation Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India

    Anita Gehlot

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Kumar, S., Kothiyal, A.D., Bisht, M.S., Kumar, A. (2018). Effect of Ratio of Protrusion Height to Print Diameter on Thermal Behaviour of Al2O3–H2O Nanofluid Flow in a Protrusion Obstacle Square Channel. In: Singh, R., Choudhury, S., Gehlot, A. (eds) Intelligent Communication, Control and Devices. Advances in Intelligent Systems and Computing, vol 624. Springer, Singapore. https://doi.org/10.1007/978-981-10-5903-2_30

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  • DOI: https://doi.org/10.1007/978-981-10-5903-2_30

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  • Online ISBN: 978-981-10-5903-2

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