/**
 * MaterialDatabase — Queryable material property library for simulation solvers.
 *
 * Every property value includes a literature citation, uncertainty bound,
 * and valid temperature range. Temperature-dependent lookup is available
 * via MaterialProperties.ts for materials with tabulated data.
 *
 * Default values sourced from:
 *   - Incropera, DeWitt et al., "Fundamentals of Heat and Mass Transfer", 7th ed.
 *   - ASM Handbook, Vol. 1 (Properties and Selection: Irons, Steels)
 *   - NIST Standard Reference Data (SRD)
 *   - Engineering Toolbox (cross-referenced with primary sources)
 */
import { type Temperature, type ThermalConductivity, type SpecificHeat, type Density, type YoungsModulus, type PoissonRatio, type YieldStrength, type Roughness } from './units/PhysicalQuantity';
/** Provenance metadata for a material property value. */
export interface PropertyProvenance {
    /** Literature source (e.g., "Incropera 7th ed., Table A.1") */
    source: string;
    /** Relative uncertainty (e.g., 0.05 = +/-5%) */
    uncertainty: number;
    /** Valid temperature range in Kelvin [min, max] */
    temperatureRange: [Temperature, Temperature];
    /** Additional notes (e.g., "Grade A36, room temperature") */
    notes?: string;
}
export interface ThermalMaterial {
    conductivity: ThermalConductivity;
    specific_heat: SpecificHeat;
    density: Density;
}
export interface StructuralMaterial {
    youngs_modulus: YoungsModulus;
    poisson_ratio: PoissonRatio;
    yield_strength: YieldStrength;
    density: Density;
}
export interface HydraulicMaterial {
    roughness: Roughness;
}
export type SimulationMaterial = ThermalMaterial & Partial<StructuralMaterial> & Partial<HydraulicMaterial> & {
    simulation_origin?: string;
    uncertainty_margin?: number;
};
/** Material entry with provenance tracking. */
export interface CitedMaterial {
    properties: SimulationMaterial;
    provenance: PropertyProvenance;
}
/**
 * Get a material by name. Checks custom registry first, then built-in DB.
 * Supports uncertainty sampling via sigma standard deviations.
 * Throws if material not found.
 */
export declare function getMaterial(name: string, sigma?: number): SimulationMaterial;
/**
 * Get a material by name, returning undefined if not found.
 */
export declare function findMaterial(name: string, sigma?: number): SimulationMaterial | undefined;
/**
 * Register a custom material (overrides built-in if same name).
 */
export declare function registerMaterial(name: string, props: SimulationMaterial): void;
/**
 * List all available material names.
 */
export declare function listMaterials(): string[];
/**
 * Get a material with full provenance. Returns undefined if not found.
 */
export declare function getCitedMaterial(name: string): CitedMaterial | undefined;
/**
 * Get provenance for a built-in material. Returns undefined for custom materials.
 */
export declare function getMaterialProvenance(name: string): PropertyProvenance | undefined;
/**
 * List all materials that have provenance citations.
 */
export declare function listCitedMaterials(): string[];
/**
 * Thermal diffusivity α = k / (ρ·cₚ) in m²/s.
 * Used for CFL stability checks in thermal solver.
 */
export declare function thermalDiffusivity(mat: ThermalMaterial): number;
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