vinihcrosaandClaude Sonnet 4.6
dd4e79cbd6
NavalForceModel bridge pattern keeps core::ForceModel interface intact while providing NavalContext (environment, speedToWater, speedToWind, EMA q_avg) to all naval models via bindContext. Force models: Inertial (Coriolis), Restoring (hydrostatic spring), Damping (potential + linear/quadratic), Squat (ICORELS shallow-water), Wind (REGULAR/ACSINKAGE), Current (OBOKATA section-integration and REGULAR with Van der Pol VIM RK4), Thrust (open-water Kt), Rudder (Prandtl lift), Tug (PUSH/PULL/ESCORTING with bilinear table). Wave engine: JONSWAP/PIERSON/REGULAR spectrum, Mitsuyasu cos-2S directional spreading, WAMIT RAO interpolation in WaveForces. NavalSimulation wraps core::Simulation, rebuilds NavalContext each step, maintains EMA (tau=16.5s). 63/63 tests pass. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
#include <catch2/catch_test_macros.hpp>
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#include <catch2/catch_approx.hpp>
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#include <ymir/naval/wave/WaveSpectrum.h>
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using Catch::Approx;
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using namespace ymir::naval;
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TEST_CASE("WaveSpectrum JONSWAP constructs without crash")
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{
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WaveSpectrum::Config cfg{};
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cfg.spectrumType = WaveSpectrumType::JONSWAP;
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cfg.significantWaveHeight = 2.0;
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cfg.peakPeriod = 8.0;
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cfg.gamma = 3.3;
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cfg.seed = 42;
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cfg.n_frequencies = 20;
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cfg.n_directions = 8;
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cfg.spreadingS = 2.0;
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cfg.mainDirection_deg = 0.0;
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WaveSpectrum spectrum(cfg);
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REQUIRE(spectrum.numComponents() > 0);
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}
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TEST_CASE("WaveSpectrum PIERSON constructs")
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{
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WaveSpectrum::Config cfg{};
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cfg.spectrumType = WaveSpectrumType::PIERSON;
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cfg.significantWaveHeight = 1.5;
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cfg.peakPeriod = 6.0;
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cfg.seed = 123;
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cfg.n_frequencies = 10;
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cfg.n_directions = 4;
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cfg.spreadingS = 1.0;
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cfg.mainDirection_deg = 45.0;
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WaveSpectrum spectrum(cfg);
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REQUIRE(spectrum.numComponents() > 0);
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}
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TEST_CASE("WaveSpectrum REGULAR has single component")
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{
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WaveSpectrum::Config cfg{};
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cfg.spectrumType = WaveSpectrumType::REGULAR;
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cfg.significantWaveHeight = 1.0;
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cfg.peakPeriod = 8.0;
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cfg.mainDirection_deg = 0.0;
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cfg.seed = 0;
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cfg.n_frequencies = 1;
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cfg.n_directions = 1;
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WaveSpectrum spectrum(cfg);
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REQUIRE(spectrum.numComponents() == 1);
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}
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TEST_CASE("WaveSpectrum total variance matches Hs estimate")
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{
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WaveSpectrum::Config cfg{};
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cfg.spectrumType = WaveSpectrumType::JONSWAP;
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cfg.significantWaveHeight = 3.0;
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cfg.peakPeriod = 10.0;
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cfg.gamma = 3.3;
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cfg.seed = 7;
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cfg.n_frequencies = 64;
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cfg.n_directions = 18;
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cfg.spreadingS = 2.0;
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cfg.mainDirection_deg = 0.0;
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WaveSpectrum spectrum(cfg);
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// Total wave variance = sum of (a_i^2 / 2)
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double m0 = 0.0;
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for (const auto& comp : spectrum.components())
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m0 += comp.amplitude * comp.amplitude / 2.0;
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double Hs_computed = 4.0 * std::sqrt(m0);
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// Should be within 20% of target Hs
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REQUIRE(Hs_computed == Approx(cfg.significantWaveHeight).epsilon(0.20));
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}
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