Abstract
Numerical solutions of the equations of the laminar boundary layer in the vicinity of the stagnation point of an axisymmetric blunted body with injection of single-component gases into a homogeneous external stream are obtained and generalized. More than 30 different pairs of gases are investigated. The heat and mass transfer in a multicomponent laminar boundary layer with the injection of a gas mixture, and also with simultaneous injection and suction of different gases through the body surface, is analyzed. An approximate method is proposed for calculating the heat and mass transfer in a laminar boundary layer.
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Abbreviations
- ρ :
-
density
- T:
-
temperature
- J:
-
enthalpy
- M:
-
molecular weight
- ci :
-
mass concentration
- xi :
-
molar concentration
- μ :
-
viscosity coefficient
- λ:
-
heat conductivity
- Dij :
-
binary diffusion coefficient
- Di :
-
generalized diffusion coefficient
- Vi :
-
diffusion velocity
- q:
-
convective heat flux
- τ:
-
surface friction
- G:
-
over-all mass flow rate through the surface
- Gi :
-
flow rate of the i-th component through the surface
- α/cp :
-
heat transfer coefficient
- β i :
-
mass transfer coefficient of the i-th component
- γ q :
-
injection coefficient for heat transfer (2. 7)
- γβ :
-
injection coefficient for mass transfer (2. 7)
- σ, ε:
-
are the parameters of the intermolecular interaction potential function
- α/c p =q/(J e -J wo), β i = (pc i Vi) w /(c iw -c ie ):
-
(pc i V f) w /(c iw −c ie )
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Additional information
The author wishes to thank V. S. Dranichkin, M. V. Gusev, and A. I. Noikin, who assisted with the computer calculations and the analysis of the computer results.
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Anfimov, N.A. Heat and mass transfer near the stagnation point with injection and suction of various gases through the body surface. Fluid Dyn 1, 14–20 (1966). https://doi.org/10.1007/BF01016262
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DOI: https://doi.org/10.1007/BF01016262