Aerogrid¶
Aerogrid
is the main object containing information of the grid of panelsIt is created by the solver
sharpy.solvers.aerogridloader.AerogridLoader
Computes the temporal derivative of circulation (gamma) using finite differences.
It will use a first order approximation for the first evaluation (when
len(previous_tsteps) == 1
), and then second order ones.\[\left.\frac{d\Gamma}{dt}\right|^n \approx \lim_{\Delta t \rightarrow 0}\frac{\Gamma^n-\Gamma^{n-1}}{\Delta t}\]For the second time step and onwards, the following second order approximation is used:
\[\left.\frac{d\Gamma}{dt}\right|^n \approx \lim_{\Delta t \rightarrow 0}\frac{3\Gamma^n -4\Gamma^{n-1}+\Gamma^{n-2}}{2\Delta t}\]- Parameters
dt (float) – delta time for the finite differences
tstep (AeroTimeStepInfo) – tstep at time n (current)
previous_tsteps (list(AeroTimeStepInfo)) – previous tstep structure in order:
[n-N,..., n-2, n-1]
- Returns
first derivative of circulation with respect to time
- Return type
float
See also