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← ScienceWhich outcome occurs when the Navier-Stokes equation neglects viscosity in analyzing supersonic airflow?
A)Accurate shockwave location representation
B)Reduced computational instability artifacts
C)Overestimation of turbulent kinetic energy✓
D)Underestimation of aerodynamic pressure drag
💡 Explanation
Neglecting effective viscosity causes the numerical scheme to model the kinetic energy cascade inaccurately under the Kolmogorov theory describing spatial distributions; therefore the energy increases artificially, rather than dissipating; this affects finer turbulent flows, rather than broader flow characteristics.
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