Quantities

turbulucid.core.quantities.delta_99(y, v, u0='last', interpolate=False)

Compute delta_99.

Parameters:
  • y (ndarray) – The values of the wall-normal coordinate.
  • v (ndarray) – The values of the streamwise velocity.
  • u0 ({'last', 'max'}) – How to compute the free stream velocity. Last will lead to using the last value in the v array, max will lead to using the maximum value.
  • interpolate (bool) – Whether to add new points to the profile using linear interpolation. Useful for coarse profiles.
Returns:

The value of delta_99.
Return type:

float
Raises:

ValueError – If the computed value is not positive.
turbulucid.core.quantities.momentum_thickness(y, v, u0='last', interpolate=False)

Compute the momentum thickness.

Parameters:
  • y (ndarray) – The values of the wall-normal coordinate.
  • v (ndarray) – The values of the streamwise velocity.
  • u0 ({'last', 'max'}) – How to compute the free stream velocity. Last will lead to using the last value in the v array, max will lead to using the maximum value.
  • interpolate (bool) – Whether to add new points to the profile using linear interpolation. Useful for coarse profiles.
Returns:

The value of the momentum thickness.
Return type:

float
turbulucid.core.quantities.delta_star(y, v, u0='last', interpolate=False)

Compute the displacement thickness.

Parameters:
  • y (ndarray) – The values of the wall-normal coordinate.
  • v (ndarray) – The values of the streamwise velocity.
  • u0 ({'last', 'max'}) – How to compute the free stream velocity. Last will lead to using the last value in the v array, max will lead to using the maximum value.
  • interpolate (bool) – Whether to add new points to the profile using linear interpolation. Useful for coarse profiles.
Returns:

The value of the displacement thickness.
Return type:

float