| """NACA 0012 validation plots — NASA TMR turb-prs2022. |
| |
| AoA = 10, 15, 17, 18 deg. |
| |
| Required metrics (turb-prs2022 challenge): |
| (1) CL vs alpha |
| (2) CD vs CL |
| (3) Cp vs x/c at each AoA (compare with experiment) |
| (4) Cf vs x/c (upper surface) at each AoA (no experiment available) |
| |
| Compare with experiment: |
| - Ladson NASA TM 4074, 1988 (CL, CD) — Re=6e6, M=0.15, transition tripped |
| - Gregory & O'Reilly NASA R&M 3726, 1970 (Cp) — Re=2.88e6 |
| - CFL3D SST reference (Cp) — 897x257 grid, NASA TMR |
| |
| Run: |
| python plot_profiles.py |
| Output: |
| PDFs in this directory (./plots/). |
| """ |
|
|
| import os, sys |
| import matplotlib |
| matplotlib.rcParams.update({'font.size': 14}) |
| import matplotlib.pyplot as plt |
|
|
| sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..'))) |
| from dat_to_csv import read_nasa_zone_file as _read |
|
|
| HERE = os.path.dirname(os.path.abspath(__file__)) |
| BASELINE = os.path.join(HERE, '..', 'baseline_komegasst') |
| EXPERIMENT = os.path.join(HERE, '..', 'highfidelity') |
| MODEL_DIR = os.environ.get('MODEL_DIR') |
|
|
| BASELINE_LABEL = r'$k$-$\omega$ SST (baseline)' |
| MODEL_LABEL = 'Submitted model' |
|
|
| ALPHAS = [10, 15, 17, 18] |
|
|
|
|
| def _safe_read(path): |
| if not os.path.isfile(path): |
| return None |
| return _read(path) |
|
|
|
|
| |
| plt.figure(figsize=(6, 4.5)) |
| d = _safe_read(os.path.join(BASELINE, '2DN00_cl_cd.dat')) |
| if d: |
| for k, v in d.items(): |
| plt.scatter(v['alpha, deg'], v['cl'], marker='v', c='grey', |
| s=70, label=BASELINE_LABEL, zorder=5) |
|
|
| if MODEL_DIR: |
| d = _safe_read(os.path.join(MODEL_DIR, '2DN00_cl_cd.dat')) |
| if d: |
| for k, v in d.items(): |
| plt.scatter(v['alpha, deg'], v['cl'], marker='D', c='deeppink', |
| s=70, label=MODEL_LABEL, zorder=10) |
|
|
| d = _safe_read(os.path.join(EXPERIMENT, 'CLCD_Ladson_expdata.dat')) |
| if d and '180 grit' in d: |
| v = d['180 grit'] |
| plt.scatter(v['alpha, deg'], v['cl'], ec='b', fc='none', marker='s', |
| s=60, label='Ladson 1988 (180 grit)') |
|
|
| plt.xlabel(r'$\alpha$ [deg]') |
| plt.ylabel(r'$C_L$') |
| plt.xlim(0, 22); plt.ylim(-0.2, 1.8) |
| plt.grid(); plt.legend(); plt.tight_layout(pad=0.3) |
| plt.savefig(os.path.join(HERE, '2DN00_cl_alpha.pdf')) |
|
|
| |
| plt.figure(figsize=(6, 4.5)) |
| d = _safe_read(os.path.join(BASELINE, '2DN00_cl_cd.dat')) |
| if d: |
| for k, v in d.items(): |
| plt.scatter(v['cl'], v['cd'], marker='v', c='grey', |
| s=70, label=BASELINE_LABEL, zorder=5) |
|
|
| if MODEL_DIR: |
| d = _safe_read(os.path.join(MODEL_DIR, '2DN00_cl_cd.dat')) |
| if d: |
| for k, v in d.items(): |
| plt.scatter(v['cl'], v['cd'], marker='D', c='deeppink', |
| s=70, label=MODEL_LABEL, zorder=10) |
|
|
| d = _safe_read(os.path.join(EXPERIMENT, 'CLCD_Ladson_expdata.dat')) |
| if d and '180 grit' in d: |
| v = d['180 grit'] |
| plt.scatter(v['cl'], v['cd'], ec='b', fc='none', marker='s', |
| s=60, label='Ladson 1988 (180 grit)') |
|
|
| plt.xlabel(r'$C_L$'); plt.ylabel(r'$C_D$') |
| plt.xlim(0, 2); plt.ylim(0, 0.08) |
| plt.grid(); plt.legend(); plt.tight_layout(pad=0.3) |
| plt.savefig(os.path.join(HERE, '2DN00_cl_cd.pdf')) |
|
|
| |
| d_base = _safe_read(os.path.join(BASELINE, '2DN00_cp_at4alphas.dat')) |
| d_model = _safe_read(os.path.join(MODEL_DIR, '2DN00_cp_at4alphas.dat')) if MODEL_DIR else None |
| d_exp = _safe_read(os.path.join(EXPERIMENT, 'CP_Gregory_expdata.dat')) |
| d_cfl3d = _safe_read(os.path.join(EXPERIMENT, 'n0012cp_cfl3d_sst.dat')) |
|
|
| base_keys = list(d_base.keys()) if d_base else [] |
| model_keys = list(d_model.keys()) if d_model else [] |
| exp_keys = list(d_exp.keys()) if d_exp else [] |
| cfl3d_keys = list(d_cfl3d.keys()) if d_cfl3d else [] |
|
|
| ylim_cp = {10: (2, -6), 15: (2, -12), 17: (2, -12), 18: (2, -12)} |
|
|
| for i, alpha in enumerate(ALPHAS): |
| plt.figure(figsize=(6, 4.5)) |
| if i < len(base_keys): |
| v = d_base[base_keys[i]] |
| plt.plot(v['x/c'], v['cp'], '-', lw=2, color='grey', |
| label=BASELINE_LABEL, zorder=5) |
| if d_model and i < len(model_keys): |
| v = d_model[model_keys[i]] |
| plt.plot(v['x/c'], v['cp'], '--', lw=2, color='deeppink', |
| label=MODEL_LABEL, zorder=10) |
| if d_cfl3d: |
| match = [k for k in cfl3d_keys if f'alpha={alpha}' in k.replace(' ', '')] |
| if match: |
| v = d_cfl3d[match[0]] |
| plt.plot(v['x'], v['cp'], ':', lw=1.5, color='green', |
| label='CFL3D SST (NASA)') |
| if d_exp: |
| match = [k for k in exp_keys if f'alpha={alpha}' in k.replace(' ', '')] |
| if match: |
| v = d_exp[match[0]] |
| plt.scatter(v['x/c'], v['cp'], ec='b', fc='none', marker='s', |
| s=40, label='Gregory 1970 (exp)') |
|
|
| plt.title(f'NACA 0012, alpha = {alpha} deg') |
| plt.xlabel('x/c'); plt.ylabel(r'$C_p$') |
| plt.ylim(ylim_cp[alpha]); plt.xlim(0, 1) |
| plt.grid(); plt.legend(); plt.tight_layout(pad=0.3) |
| plt.savefig(os.path.join(HERE, f'2DN00_cp_alpha_{alpha}deg.pdf')) |
|
|
| |
| d_base = _safe_read(os.path.join(BASELINE, '2DN00_cf_at4alphas.dat')) |
| d_model = _safe_read(os.path.join(MODEL_DIR, '2DN00_cf_at4alphas.dat')) if MODEL_DIR else None |
| base_keys = list(d_base.keys()) if d_base else [] |
| model_keys = list(d_model.keys()) if d_model else [] |
|
|
| ylim_cf = {10: (-0.005, 0.04), 15: (-0.005, 0.07), 17: (-0.005, 0.07), 18: (-0.005, 0.07)} |
|
|
| for i, alpha in enumerate(ALPHAS): |
| plt.figure(figsize=(6, 4.5)) |
| if i < len(base_keys): |
| v = d_base[base_keys[i]] |
| plt.plot(v['x/c'], v['cf'], '-', lw=2, color='grey', |
| label=BASELINE_LABEL, zorder=5) |
| if d_model and i < len(model_keys): |
| v = d_model[model_keys[i]] |
| plt.plot(v['x/c'], v['cf'], '--', lw=2, color='deeppink', |
| label=MODEL_LABEL, zorder=10) |
|
|
| plt.title(f'NACA 0012, alpha = {alpha} deg') |
| plt.xlabel('x/c'); plt.ylabel(r'$C_f$ (upper)') |
| plt.ylim(ylim_cf[alpha]); plt.xlim(0, 1) |
| plt.grid(); plt.legend(); plt.tight_layout(pad=0.3) |
| plt.savefig(os.path.join(HERE, f'2DN00_cf_alpha_{alpha}deg.pdf')) |
|
|
| print(f'Wrote plots to {HERE}') |
|
|
