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The effect of inlet pressure distortion on the performance of an axisymmetric compact tube heat exchanger with radial counter flow type for hypersonic pre-cooled aero-engine

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Abstract

The compact tube heat exchanger located behind the air-intake can achieve quick cooling of high-temperature air to ensure the normal operation of the pre-cooled aeroengine. It has great impact on the engine’s performance. The total pressure distribution at the heat exchanger inlet is inevitably uneven due to the influence of the air-intake. This paper studies the effect of three typical inlet distortions with different amplitudes using porous model and dual cell model. The results indicated that the outlet total pressure distortion is not sensitive to the inlet total pressure distortion. However, it affects the total pressure recovery and the total temperature distortion at the outlet by altering the pressure loss in the heat exchanger upstream and the flux distribution at the heat-transfer-zone entrance, respectively. This leads to a reduction of heat transfer. The effect of inlet distortions varies with distortion type. And it becomes more severe with increasing distortion.

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Abbreviations

Ma :

Mach number, -

ρ :

Density, kg/m3

v :

Velocity, m/s

p :

Pressure, pascal

k :

Ratio of specified heats, -

T :

Temperature, K

G :

Maximum flux, kg/(m2·s)

A surf,o :

Heat transfer area, m2

A min :

Minimum flow area, m2

f :

Friction factor, -

α :

Permeability of the porous model, -

c 2 :

Inertial loss coefficient, -

Re :

Reynold number, -

μ :

Viscosity, N·s/m2

h :

Heat transfer coefficient, w/(m2·K)

C p :

Specific heat capacity, J/(kg·K)

Nu :

Nusselt number, -

Pr :

Prandtl number, -

TPD :

Total pressure distortion coefficient, -

TTD :

Total temperature distortion coefficient, -

TPR :

Total pressure recovery, -

p*:

Total pressure, pascal

T*:

Total temperature, K

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Acknowledgments

The author is thankful for the support from Advanced Intake and Exhaust System Research Group, Beihang University.

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Authors and Affiliations

  1. School of Energy and Power Engineering, Beihang University, Beijing, 100191, China

    Wenhao Ding, Qitai Eri & Bo Kong

  2. Research Institute of Aero-Engine, Beihang University, Beijing, 100191, China

    Changsheng Wang

Authors
  1. Wenhao Ding
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  2. Qitai Eri
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  3. Bo Kong
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  4. Changsheng Wang
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Corresponding author

Correspondence to Bo Kong.

Additional information

Wenhao Ding is a Ph.D. student at the School of Energy and Power Engineering, Beihang University, Beijing, China. His interests cover compact tube heat exchanger, advanced intake design technology, and computational fluid dynamics.

Qitai Eri is a Professor with the School of Energy and Power Engineering, Beihang University, Beijing, China. His research areas are aerodynamics, heat transfer, and the intake and exhaust system of aero-engines. He has worked at Beihang University since 1995. He got his Ph.D. at Beihang University in 2009. He has published over 100 papers at academic conferences and international journals.

Bo Kong is a Post Doctor of the School of Energy and Power Engineering, Beihang University, Beijing, China. He received his Ph.D. in Thermal Engineering from Beihang University. His research interests include advanced intake and exhaust system, heat transfer, and active flow control.

Changsheng Wang is a Ph.D. student at the Research Institute of Aero-Engine, Beihang University, Beijing, China. His interests cover aero-engine intake optimization technology and atmosphere-breathing electric propulsion design.

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Ding, W., Eri, Q., Kong, B. et al. The effect of inlet pressure distortion on the performance of an axisymmetric compact tube heat exchanger with radial counter flow type for hypersonic pre-cooled aero-engine. J Mech Sci Technol 36, 3181–3191 (2022). https://doi.org/10.1007/s12206-022-0549-0

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  • DOI: https://doi.org/10.1007/s12206-022-0549-0

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