Statistical characteristics of a solenoidal perturbation field in spatially inhomogeneous flows of a compressible ideal gas
Abstract
The paper considers the evolution of spatial correlation functions and the spectral tensor of solenoidal pulsations of velocity and vorticity in the presence of entropy perturbations in two-dimensional (plane and axisymmetric) potential flows of a compressible ideal gas. Analytical expressions are obtained for the transfer functions, one-point moments of second order, and the spectral tensor of the pulsation energy under the condition that the perturbation field is isotropic. Particular emphasis is placed on effects associated with the streamline curvature of the main flow and entropy perturbations.
- Publication:
-
TsAGI Uchenye Zapiski
- Pub Date:
- 1981
- Bibcode:
- 1981ZaTsA..12...18S
- Keywords:
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- Compressible Flow;
- Flow Velocity;
- Ideal Gas;
- Nonuniform Flow;
- Statistical Correlation;
- Turbulent Flow;
- Entropy;
- Linear Equations;
- Tensor Analysis;
- Transfer Functions;
- Fluid Mechanics and Heat Transfer