case = Case(panels, trailing_edge)
case.mom_ref_point = paraBEM.Vector3(1.25, 0, -6)
case.A_ref = parametricGlider.shape.area
case.farfield = 5
case.drag_calc = "on_body"
case.trefftz_cut_pos = case.v_inf * 800
case.v_inf = paraBEM.Vector3(v_inf)
case.create_wake(length=10000, count=4) # length, count
polars = case.polars(v_inf_deg_range3(case.v_inf, -5, 12, 15))
vtk_writer = CaseToVTK(case, "results/vtk_glider_case")
vtk_writer.write_panels(data_type="cell")
vtk_writer.write_wake_panels()
vtk_writer.write_body_stream(panels, 100)
p = []
alpha = []
for i in polars.values:
alpha.append(np.rad2deg(i.alpha))
p.append((i.cL, i.cD, i.cP, i.cop.x, i.cop.z))
plt.figure(figsize=(10, 4))
# plt.title(u"Beiwerte bei variiertem Anströmwinkel")
plt.ylabel(u"$\\alpha$", rotation=0, fontsize=20)
plt.xlabel(u"$c_{Wi}$, $c_N$, $c_A$", rotation=0, fontsize=20)
plt.plot(np.array(p).T[0], alpha, label=u"$c_A$")
plt.plot(np.array(p).T[1], alpha, label=u"$c_{Wi}$")
plt.plot(-np.array(p).T[2], alpha, label=u"- $c_N$")
with open("../openglider/glider/referenz_schirm_berg.json") as _file:
glider = load(_file)["data"]
panels = paraBEM_Panels(glider.get_glider_3d() , 0, 30, 0, False)
case = Case(panels[1], panels[2])
case.v_inf = paraBEM.Vector(glider.v_inf)
case.drag_calc = "on_body"
case.A_ref = glider.shape.area
#wake parallel to the x axis
print("* wake parallel to the x-axis")
case.create_wake(50, 100, paraBEM.Vector3(1., 0., 0.))
case.run()
writer = CaseToVTK(case, "results/wake/x-parallel")
writer.write_panels()
writer.write_wake_panels()
print("F_l = ", case.cL * case.A_ref * 1.2 * 11**2 / 2.,
"F_w = ", case.cD * case.A_ref * 1.2 * 11**2 / 2.)
#wake parallel to v_inf
print("* wake parallel to v_inf")
case.create_wake(50, 100, case.v_inf)
case.run()
writer = CaseToVTK(case, "results/wake/v_inf-parallel")
writer.write_panels()
writer.write_wake_panels()
print("F_l = ", case.cL * case.A_ref * 1.2 * 11**2 / 2.,
"F_w = ", case.cD * case.A_ref * 1.2 * 11**2 / 2.)
