BumpVelocityField¶

class sharpy.generators.bumpvelocityfield.BumpVelocityField[source]¶

Bump Velocity Field Generator

BumpVelocityField is a class inherited from BaseGenerator

The BumpVelocityField class generates a bump-shaped gust profile velocity field, and the profile has the characteristics specified by the user.

To call this generator, the generator_id = BumpVelocityField shall be used. This is parsed as the value for the velocity_field_generator key in the desired aerodynamic solver’s settings.

The resultant velocity, $w_g$, is calculated as follows:

\[w_g = \frac{w_0}{4}\left( 1 + \cos(\frac{(x - x_0)}{H_x} \right)\left( 1 + \cos(\frac{(y - y_0)}{H_y} \right)\]

Notes

For now, only simulations where the inertial FoR is fixed are supported.

The settings that this solver accepts are given by a dictionary, with the following key-value pairs:

Name	Type	Description	Default
`gust_intensity`	`float`	Intensity of the gust	`None`
`x0`	`float`	x location of the centre of the bump	`0.0`
`y0`	`float`	y location of the centre of the bump	`0.0`
`hx`	`float`	Gust gradient in the x direction	`1.0`
`hy`	`float`	Gust gradient in the y direction	`1.0`
`relative_motion`	`bool`	When true the gust will move at the prescribed velocity	`False`
`u_inf`	`float`	Free stream velocity	`None`
`u_inf_direction`	`list(float)`	Free stream velocity direction	`numpy.array`