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Conjugate Heat Transfer Study in Hypersonic Flows

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Abstract

Coupled and decoupled conjugate heat transfer (CHT) studies are carried out to imitate experimental studies for heat transfer measurement in hypersonic flow regime. The finite volume based solvers are used for analyzing the heat interaction between fluid and solid domains. Temperature and surface heat flux signals are predicted by both coupled and decoupled CHT analysis techniques for hypersonic Mach numbers. These two methodologies are also used to study the effect of different wall materials on surface parameters. Effectiveness of these CHT solvers has been verified for the inverse problem of wall heat flux recovery using various techniques reported in the literature. Both coupled and decoupled CHT techniques are seen to be equally useful for prediction of local temperature and heat flux signals prior to the experiments in hypersonic flows.

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Abbreviations

C:

Specific heat at constant, kJ/kg K

E:

Total specific energy, kJ/kg

e:

Specific internal energy, kJ/kg

H:

Total specific enthalpy, kJ/kg

h:

Specific enthalpy, kJ/kg

k:

Thermal conductivity, W/m K

L:

Length, m

M:

Mach number

p:

Pressure, N/m2

\({\dot{\text{q}}}\) :

Heat flux, W/m2

Pr:

Prandtl number

R:

Universal gas constant

Re:

Reynolds number

S:

Source term

s:

Sutherland’s constant

St :

Stanton Number

T:

Temperature, °C

u:

X-direction velocity, m/s

v:

Y-direction velocity, m/s

x, y:

Cartesian co-ordinate system

λ:

Courant number

γ:

Specific heat ratio

μ:

Dynamic viscosity, kg/ms

τ:

Shear stress, N/m2

ρ:

Density, kg/m3

δ:

A parameter in AUSM-δ scheme

∞:

Freestream quantities

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Authors and Affiliations

  1. Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India

    Niranjan Sahoo & Vinayak Kulkarni

  2. ABB Global Industries and Services Limited, Jayanth Tech Park, Nandambakkam, Chennai, 600089, Tamil Nadu, India

    Ravi Kumar Peetala

Authors
  1. Niranjan Sahoo
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  2. Vinayak Kulkarni
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  3. Ravi Kumar Peetala
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Correspondence to Niranjan Sahoo.

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Sahoo, N., Kulkarni, V. & Peetala, R.K. Conjugate Heat Transfer Study in Hypersonic Flows. J. Inst. Eng. India Ser. C 99, 151–158 (2018). https://doi.org/10.1007/s40032-017-0353-2

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  • DOI: https://doi.org/10.1007/s40032-017-0353-2

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