tests/test_physics.py

#!/usr/bin/env python3
"""
TSU-WAVE Physics Calculations Test
"""

import numpy as np

print("=" * 60)
print("📐 TSU-WAVE Physics Test")
print("=" * 60)

# Constants
g = 9.81
rho = 1025  # seawater density (kg/m³)

# Test cases from research paper
test_cases = [
    {"name": "Deep Ocean", "H": 6000, "eta": 1.0, "wavelength": 280000},
    {"name": "Shelf Edge", "H": 200, "eta": 5.0, "wavelength": 50000},
    {"name": "Nearshore", "H": 20, "eta": 10.0, "wavelength": 10000},
]

for case in test_cases:
    print(f"\n📊 {case['name']}:")
    print(f"   Depth: {case['H']} m, Wave: {case['eta']} m")
    
    # Wave speed
    c = np.sqrt(g * case['H'])
    print(f"   Wave speed: {c:.1f} m/s")
    
    # Energy
    E_pot = 0.5 * rho * g * case['eta']**2
    print(f"   Potential energy: {E_pot/1000:.1f} kJ/m²")
    
    # Nonlinear parameter
    Ur = (case['H']/case['eta']) * (case['wavelength']/case['H'])**2
    print(f"   Ursell number: {Ur:.2e}")
    if Ur < 0.1:
        print("   → Linear regime")
    elif Ur < 1:
        print("   → Weakly nonlinear")
    else:
        print("   → Strongly nonlinear")

print("\n" + "=" * 60)