Multi-Fluid · Process Utilities

One Tool, Every Fluid

Condensing steam, natural gas, two-phase air-water, and settling slurry — the same browser tool covers work that usually needs three or four separate desktop packages.

1.000 → 0.924

vapour quality from boiler to the farthest user

~30.5 kW

total heat loss, positive on every insulated pipe

The flagship — condensing steam distribution

Track condensation link-by-link across 425 m of main

A boiler house delivers dry saturated steam (10 bar(a), quality 1.000) into a 425 m buried, mineral-wool-insulated distribution main feeding three process users. As the steam crosses the insulated mains it sheds about 30.5 kW to the 15 °C ground, so its vapour quality steadily drops — down to 0.924 at the farthest user — and drip-leg steam traps continuously drain the condensate.

Service: Boiler house → 3 process users
Mains: 425 m buried, insulated steam mains
Supply: 10 bar(a) saturated steam, quality 1.000
Solve: 9 condensing iterations, converged

Condensing-steam distribution — verified per-link solve
Parameter	Value	What it proves
Vapour quality (trunk)	1.000 → 0.997 → 0.979 → 0.946	Per-link quality drop along the trunk as latent heat is lost (real condensing solve).
Quality at farthest user	0.924	Steam stays wet but well above a drained drip-leg — the trap keeps the main dry.
Total heat loss	~30.5 kW	Positive on every insulated pipe — buried mineral-wool mains shedding to 15 °C ground.
Mixture density (trunk)	5.17 → 5.45 kg/m³	HEM mixture density rises as vapour condenses — the genuine physical trend from the converged per-link quality.
Outlet temperature	179.9 °C	Saturated throughout — condensation is latent, so temperature stays at T_sat (correct physics).
Steam traps	draining real condensate	Drip-leg traps drain the (1 − x)·ṁ condensate computed from the real per-link quality.

Source: the production condensing solve (9 condensing iterations, converged), verified both through the solver directly and through the live /solve dispatch.

The suite — one tool, every fluid

One solve is one fluid regime — so here are four

The same browser tool that solves condensing steam also solves natural-gas mains, two-phase air-water flow, and — via a dedicated calculator — settling slurry. That is work plant teams usually split across three or four separate desktop packages.

Condensing steam

IAPWS two-phase, per-link condensation

The flagship network above: per-link quality drop, ~30.5 kW heat loss, drip-leg traps draining condensate.

Open the steam network

Compressible gas

Single-phase gas (air, two pressures)

A validated compressible-gas example — natural gas / air mains solved with a real EOS density annotation.

Open the gas example

Two-phase air-water

Gas-liquid two-phase (HEM / LM / BB)

A two-phase air-water line — the same engine solving mixed-phase pressure drop and flow pattern.

Open the two-phase example

Settling slurryCalculator only

Standalone calculator (not the network solve)

A coarse-sand tailings line: Durand limit-deposit velocity, regime, Thomas viscosity, hydraulic gradient.

Open the slurry calculator

Slurry worked case — standalone calculator

A coarse-sand tailings line, sized above deposition

For an abrasive coarse-sand tailings line, the settling-slurry calculator returns the Durand limit-deposit velocity, the flow regime, the Thomas viscosity multiplier, and the excess hydraulic gradient — confirming the 4.5 m/s design sits safely above the deposition velocity. This is the standalone calculator, not the network solve: slurry friction is not wired into the network solver (its pipes stay Newtonian).

Settling-slurry worked case (standalone calculator)
Parameter	Value	What it proves
Durand limit-deposit velocity	3.90 m/s	Coarse-sand tailings (d50 0.5 mm, Cv 0.20, DN200) at V = 4.5 m/s — from the settling-slurry calculator.
V / V_D	1.16	Operating ~15% ABOVE the deposition velocity — won’t form a stationary bed.
Regime	Sliding bed	Classified from the operating point relative to the deposition map.
Settling velocity	0.061 m/s	Single-particle terminal settling velocity (Cheng).
Thomas slurry viscosity	1.98× water	Effective mixture viscosity multiplier from the Thomas correlation.
Total hydraulic gradient	0.089 m/m	Clear-water plus excess gradient (i_m). Empirical correlations, ±15–25%.

What this proves vs the competition

Condensing steam, compressible gas, two-phase flow, and settling slurry are usually spread across separate specialist packages and separate licences. DekEn covers the breadth in one browser-native tool — one login, one interface, one workflow.

Open the steam network and solve it

Open the steam network in the builder

All showcases Open in the builder