detection.py¶

Different methods for vortex detection

detection.calc_delta_criterion(vfield)¶

Delta Criterion

Parameters:	vfield (class VelocityField) – contains spatial mesh and velocity components
Returns:	delta criterion
Return type:	ndarray

detection.calc_q_criterion(vfield)¶

Q Criterion vorticity magnitude and mean strain rate

Parameters:	vfield (class VelocityField()) – contains spatial mesh and velocity components
Returns:	Q criterion
Return type:	ndarray

detection.calc_swirling(vfield)¶

2D Swirling strength

Parameters:	vfield (class VelocityField()) – contains spatial mesh and velocity components
Returns:	swirling strength criterion
Return type:	ndarray