units.hpp

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/*
 * BELFEM -- The Berkeley Lab Finite Element Framework
 * Copyright (c) 2026, The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory (subject to receipt of any required
 * approvals from the U.S. Dept. of Energy).  All rights reserved.
 *
 * Developers: Christian Messe, Gregory Giard
 *
 * See the top-level LICENSE file for the complete license and disclaimer.
 */
 
#ifndef BELFEM_UNITS_HPP
#define BELFEM_UNITS_HPP
 
 
#include "typedefs.hpp"
#include "constants.hpp"
 
#ifdef BELFEM_GCC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-variable"
#endif
 
#define BELFEM_TREF 298.15
#define BELFEM_PREF 100000.0
 
//------------------------------------------------------------------------------
 
namespace belfem
{
    namespace constant
    {
        // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        // Metric Units
        // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 
        const real l    = 0.001 ;                 // liter
        const real km   = 1000  ;                 // kilometers
        const real bar  = 1.0e5 ;
        const real atm  = 1.01325e5 ;
        const real rpm  = constant::pi / 30.0 ; // rpm in rad/s
 
        // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        // Freedom Units
        // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 
        const real in  = 0.0254 ;               // inch
        const real ft  = 12.0 * in ;            // foot
        const real mi  = 5280.0 * ft ;          // mile
        const real gal = 231.0 * in * in * in ; // us gallon
        const real lb  =  0.45359237 ;          // pound
        const real lbf = lb * constant::g0;     // pound force
        const real psi = lbf / ( in * in ) ;    // pound per square inch
        const real oz = gal / 128.0 ;           // us fluid ounce
 
    }
}
 
//------------------------------------------------------------------------------
#ifdef BELFEM_GCC
#pragma GCC diagnostic pop
#endif
#endif //BELFEM_UNITS_HPP