sepehr
3358b74342
Ship the Next.js cycle editor with CAD chrome, technical HX symbols, Fixed/Free boundary guidance, and secondary water/air pressure drop support in the solver stack. Co-authored-by: Cursor <cursoragent@cursor.com>
2.4 KiB
Boundaries — Sources & Sinks / Frontières
Config types: RefrigerantSource, RefrigerantSink, BrineSource, BrineSink, AirSource, AirSink
Sources: refrigerant_boundary.rs, brine_boundary.rs, air_boundary.rs
EN
Boundary components fix Dirichlet conditions on one edge.
Source = one outlet; Sink = one inlet. These are the natural place to FIX machine inputs (T, P, ṁ).
RefrigerantSource / RefrigerantSink
Source: P = P_set ; h = h(P, x) n ≈ 2
Sink: P = P_back ; optional h if x set n ≈ 1–2
| Key | Meaning | Default |
|---|---|---|
fluid |
refrigerant | primary |
p_set_bar / p_back_bar |
pressure | ~10 bar typical |
quality |
vapor quality | 1.0 source |
BrineSource / BrineSink (water / glycol)
Source: P, h(T), optional ṁ_set n = 2 or 3
Sink: P_back, optional T/h, ṁ n = 1–3
| Key | Meaning | Default |
|---|---|---|
fluid |
Water / MEG / … | Water |
p_set_bar / p_back_bar |
pressure | 2 bar |
t_set_c |
temperature | 12 °C (source) |
concentration |
glycol mass % | 0 |
m_flow_kg_s |
imposed loop flow (BOLT Vd_fixed) |
optional |
Do not combine m_flow_kg_s with another flow imposition on the same branch (pump curve + fixed ṁ → over-constrained).
AirSource / AirSink
Psychrometric state (Magnus–Tetens style humidity + moist air enthalpy):
h ≈ 1006·T_c + W·(2.501e6 + 1860·T_c)
Source: fix P, h(T, RH) n = 2
| Key | Meaning | Default |
|---|---|---|
t_dry_c / t_set_c |
dry-bulb | – |
rh |
relative humidity | – |
p_set_bar |
pressure | ~1 bar |
m_flow_kg_s |
optional mass flow | – |
System wiring for HX secondary
BrineSource.outlet → HX.secondary_inlet
HX.secondary_outlet → BrineSink.inlet
Without live wiring, HX may still run in rating mode with scalar secondary_* on the HX itself.
Calibration
Boundaries generally have no Z-factors. They are pure Fixed inputs / back-pressure.
FR
Rôle
Imposent les conditions aux limites (P, T, ṁ). C’est là qu’on fixe les entrées machine.
Eau (Brine)
Source : P, T, ṁ optionnel. Sink : contre-pression (T sortie souvent libre = émergente).
Air
État psychrométrique (T sèche, HR → h).
Câblage HX
Source → secondary_in → secondary_out → Sink pour le mode système.
JSON
Voir tableaux EN.