mirror of
https://github.com/subsurface/subsurface.git
synced 2024-11-28 13:10:19 +00:00
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
#ifndef GAS_H
|
||
|
|
#define GAS_H
|
||
|
|
|
||
|
|
#include "units.h"
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#else
|
||
|
|
#include <stdbool.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// o2 == 0 && he == 0 -> air
|
||
|
|
// o2 < 0 -> invalid
|
||
|
|
struct gasmix {
|
||
|
|
fraction_t o2;
|
||
|
|
fraction_t he;
|
||
|
|
};
|
||
|
|
static const struct gasmix gasmix_invalid = { { -1 }, { -1 } };
|
||
|
|
static const struct gasmix gasmix_air = { { 0 }, { 0 } };
|
||
|
|
|
||
|
|
struct icd_data { // This structure provides communication between function isobaric_counterdiffusion() and the calling software.
|
||
|
|
int dN2; // The change in fraction (permille) of nitrogen during the change
|
||
|
|
int dHe; // The change in fraction (permille) of helium during the change
|
||
|
|
};
|
||
|
|
|
||
|
|
extern bool isobaric_counterdiffusion(struct gasmix oldgasmix, struct gasmix newgasmix, struct icd_data *results);
|
||
|
|
|
||
|
|
extern double gas_compressibility_factor(struct gasmix gas, double bar);
|
||
|
|
extern double isothermal_pressure(struct gasmix gas, double p1, int volume1, int volume2);
|
||
|
|
extern double gas_density(struct gasmix gas, int pressure);
|
||
|
|
extern int same_gasmix(struct gasmix a, struct gasmix b);
|
||
|
|
|
||
|
|
static inline int get_o2(struct gasmix mix)
|
||
|
|
{
|
||
|
|
return mix.o2.permille ?: O2_IN_AIR;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int get_he(struct gasmix mix)
|
||
|
|
{
|
||
|
|
return mix.he.permille;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct gas_pressures {
|
||
|
|
double o2, n2, he;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern void sanitize_gasmix(struct gasmix *mix);
|
||
|
|
extern int gasmix_distance(struct gasmix a, struct gasmix b);
|
||
|
|
|
||
|
|
extern bool gasmix_is_air(struct gasmix gasmix);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|