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"- $c_N$") plt.legend(fontsize=15)
import paraBEM from paraBEM import pan3d from paraBEM.vtk_export import CaseToVTK from paraBEM.mesh import mesh_object import numpy as np mesh = mesh_object.from_OBJ("../mesh/sphere_low_tri.obj") case = pan3d.DirichletDoublet0Case3(mesh.panels) case.v_inf = paraBEM.Vector3(1, 0, 0.) case.farfield = 100 case.run() lin = np.linspace(-0.5, 0.5, 5) grid = [[-2, k, j] for j in lin for k in lin] vtk_writer = CaseToVTK(case, "results/vtk_test_case") vtk_writer.write_panels(data_type="point") # vtk_writer.write_wake_panels() vtk_writer.write_body_stream(mesh.panels, 50) vtk_writer.write_field([-2, 2, 100], [-2, 2, 100], [-1, 1, 3])