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| subroutine | m_perturbation::s_initialize_perturbation_module () |
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| subroutine | m_perturbation::s_perturb_sphere (q_prim_vf) |
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| subroutine | m_perturbation::s_perturb_surrounding_flow (q_prim_vf) |
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| subroutine | m_perturbation::s_superposition_instability_wave (q_prim_vf) |
| | This subroutine computes velocity perturbations for a temporal mixing layer with hypertangent mean streamwise velocity profile obtained from linear stability analysis. For a 2D case, instability waves with spatial wavenumbers, (4,0), (2,0), and (1,0) are superposed. For a 3D waves, (4,4), (4,-4), (2,2), (2,-2), (1,1), (1,-1) areadded on top of 2D waves.
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| subroutine | m_perturbation::s_compute_equilibrium_state (fp, fr0, fr) |
| | This subroutine computes equilibrium bubble radius of the perturbed pressure field.
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| subroutine | m_perturbation::s_instability_wave (alpha, beta, wave, shift) |
| | This subroutine computes instability waves for a given set of spatial wavenumbers (alpha, beta) in x and z directions. The eigenvalue problem is derived from the linearized Euler equations with parallel mean flow assumption (See Sandham 1989 PhD thesis for details).
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| subroutine | m_perturbation::s_solve_linear_system (alpha, beta, u_mean, rho_mean, p_mean, d, gam, pi_inf, mach, wave, shift) |
| | This subroutine solves linear system from linear stability analysis and generate instability waves for the given set of spatial wave numbers and phase shift.
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| subroutine | m_perturbation::s_instability_nonreflecting_subsonic_buffer_bc (ar, ai, hr, hi, rho_mean, mach) |
| | This subroutine applies non-reflecting subsonic buffer boundary condition to the linear system of equations (i.e. matrix A).
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| subroutine | m_perturbation::s_generate_wave (wr, wi, zr, zi, rho_mean, mach, alpha, beta, wave, shift) |
| | This subroutine generates an instability wave using the most unstable eigenvalue and corresponding eigenvector among the given set of eigenvalues and eigenvectors.
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| subroutine | m_perturbation::s_elliptic_smoothing (q_prim_vf) |
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| subroutine | m_perturbation::s_finalize_perturbation_module () |
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1.14.0 