Abstract
In this paper, the effect of Reynolds number on transonic compressor blade rotor section is investigated. After passing through the first transonic compressor stages , the flow becomes remarkably compressed. In the present work, it is intended to numerically investigate the effects of the inflow Reynolds number on the unique incidence, flow losses, deviation angle, and shock position, at three different important points of “Minimum Loss” and “Choked Flow” in started conditions and “Stall Operation” in un-started conditions.
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Abbreviations
- AVDR :
-
\(\frac{{\rho_{out} V_{out} cos\alpha_{out} }}{{\rho_{in} V_{in} cos\alpha_{in} }}\)
- C :
-
Chord (m)
- C p :
-
Pressure coefficient = \(\frac{{P_{0,in} - P}}{{P_{0,in} - P_{in} }}\)
- incidence :
-
β in − κ in
- Deviation :
-
β out − κ out
- k :
-
Turbulent kinematic energy (m2/s2)
- M :
-
Mach number
- P :
-
Pressure (kPa)
- Re:
-
Reynolds number
- S :
-
Pitch (m)
- T :
-
Temperature (K)
- t :
-
Thickness (m)
- V :
-
Total velocity (m/s)
- Y + :
-
Dimensionless wall distance
- β :
-
Flow direction (°)
- δ :
-
Deviation angle (°)
- ε :
-
Turbulence dissipation
- κ :
-
Blade angle (°)
- μ :
-
Dynamic viscosity (kg/ms)
- ρ :
-
Density (kg/m3)
- ω :
-
Specific dissipation (1/s)
- ϖ :
-
Loss coefficient = \(\frac{{P_{0,in} - P_{0,out} }}{{P_{0,in} - P_{in} }}\)
- back :
-
Downstream of blade
- in :
-
Inlet
- out :
-
Outlet
- 0 :
-
Stagnation condition
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Beheshti Amiri, H., Shahrabi Farahani, A. & Khazaei, H. The effect of Reynolds number on transonic compressor blade rotor section. Heat Mass Transfer 52, 2155–2165 (2016). https://doi.org/10.1007/s00231-015-1715-z
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DOI: https://doi.org/10.1007/s00231-015-1715-z