Fluid Systems Engineering Workspace

Ready to begin — enter a system or load the illustrative example.SI units · user-entered values unless identified

1. Project & Fluid

Project nameFluid typeTemperature°CDensitykg/m³Dynamic viscosityREFERENCE DATA — water at 25 °C, rounded NIST values. Verify at entered temperature.

Property sources / vapor pressure

Density: REFERENCE — rounded NIST density, 25 °C; https://nvlpubs.nist.gov/nistpubs/jres/097/jresv97n3p335_a1b.pdf. Viscosity: REFERENCE — rounded NIST viscosity, 25 °C; https://srd.nist.gov/JPCRD/jpcrd121.pdf. ν and SG are derived below. Temperature edits never apply references automatically.Vapor pressure absoluteNOT PROVIDEDWater SG reference densitykg/m³SG reference convention: water near 4 °C, 1000 kg/m³; editable. ν NOT EVALUATED m²/s · SG NOT EVALUATED

Enter SG or kinematic viscosity

Entered specific gravityEntered kinematic viscositym²/sThese explicit actions update the authoritative density or dynamic viscosity; other fields do not change automatically.

HI/NIST density & viscosity: 0–100 °C, bounded saturation-table interpolation. NIST vapor pressure: Antoine 0–29.85 °C; HI/NIST table to 100 °C. Unavailable references are never extrapolated.

2. System Duty

Design flow rateSteady incompressible liquid · series path only. Boundary pressures are available in Analysis & Criteria.

3. Pipe & Fittings

Pipe materialPrimary nominal sizePrimary inside diameterPrimary roughness

Secondary size · 62.7 mm ID

Secondary nominal sizeSecondary inside diameterSecondary roughness

ID governs. Roughness is an editable assumption. Edit lengths and fitting K in the component table.

4. Elevation & Equipment

Elevation differenceInclude static headTank levels are editable in the table. Intermediate elevations are optional; missing pressure stays NOT EVALUATED.

5. Pump / Valve Data

Pump efficiency%

User pump curve · optional

Flow m³/h, head m, optional efficiency %, shaft kW, NPSHr m — CSV per linePUMP CURVE NOT PROVIDED

6. Analysis & Criteria

Boundary pressures / type

Boundary typeAtmospheric pressure absolute

Source pressurePressure basis

Destination pressurePressure basis

No atmospheric pressure is assumed. Absolute-to-gauge conversion and NPSHA require an entered value. Tank components represent end boundaries; local pipe velocity applies in pipe-section mode.

Motor / energy at operating point

Motor efficiency%Drive efficiency%Operating hours per yearhElectricity tariff/kWhEnter drive efficiency explicitly (100% if no drive losses are modeled). A solved pump operating point is required. Tariff uses your currency.

Input NOT EVALUATED kW · Energy NOT EVALUATED kWh/year · Cost NOT EVALUATED/year

Pipe sizing / maximum flow

Target maximum velocitym/sAllowable straight-pipe lossSizing reference lengthLoss basis

Velocity ID NOT EVALUATED mm
Loss ID NOT EVALUATED mm
Max flow NOT EVALUATED m³/h

Uses entered flow, primary roughness and fluid properties. Max flow uses selected primary ID and velocity limit. Loss solver searches 0.1–10000 mm in supported friction regimes; NOT EVALUATED outside a solvable interval. No schedule selection.

User criteria · no universal limits

Maximum velocity criterionm/sMaximum pipe ΔP per 100 mMinimum node gauge pressureMaximum gauge pressure / MAWPRequired NPSH marginPump minimum operating flowPump maximum operating flowMotor rated shaft outputRequired motor margin%USER CRITERION. Pressure limits require every intermediate node elevation. PASS applies only to the specified criterion.

Measured pump test

Measured suction gauge pressureMeasured discharge gauge pressureMeasured suction elevationMeasured discharge elevationMeasured suction velocitym/sMeasured discharge velocitym/sMeasured shaft powerMeasured electrical input

Total head NOT EVALUATED m · Efficiency NOT EVALUATED%

Uses current entered duty flow. Shaft measurement takes precedence; electrical derivation requires motor and drive efficiencies.

System Schematic

Build your fluid system

Add components in flow order, from suction tank to discharge tank.

Load the illustrative example to explore a two-size pipeline.

Authoritative series path · click a component to select · not to scale

Hydraulic Profile

Hydraulic profile NOT EVALUATED

Requires valid boundaries and a single-pump duty or solved series-pump point.

NOT EVALUATED. EGL / HGL; node pressure requires entered elevation.

Component Results Table

#	Component / description	Length (m)	Size / ID (mm)	Qty	K / z (m)	v · m/s	Loss · m

Performance Curves

Complete the system to calculate its curve.

PUMP CURVE NOT PROVIDED

System curve — red · supplied pump — bluePUMP CURVE NOT PROVIDED
Operating point: NOT EVALUATED

Key Results · Entered Duty

Total dynamic head (TDH): NOT EVALUATEDm
Estimated pump shaft power: NOT EVALUATEDkW
Flow rate (Q): NOT EVALUATEDm³/h
Reynolds number · first pipe: NOT EVALUATED—
Flow regime · first pipe: NOT EVALUATED
Darcy factor · first pipe: NOT EVALUATED—
Pipe friction loss: NOT EVALUATEDm
Fittings & minor loss: NOT EVALUATEDm
Static head (ΔZ): NOT EVALUATEDm
Hydraulic power: NOT EVALUATEDkW
Pump efficiency (entered): Not entered%
Mass flow: NOT EVALUATEDkg/s
Boundary pressure head: NOT EVALUATEDm
Equipment loss: NOT EVALUATEDm
Operating-point motor input: NOT EVALUATEDkW

Engineering Checks

Check	Value / basis	Status
Series model / dimensions	Complete valid inputs	NOT EVALUATED
Velocity / pipe suitability	No project acceptance limits supplied	NOT EVALUATED
Reynolds / friction method	Incomplete inputs	NOT EVALUATED
Fluid properties / fitting K	REFERENCE DATA — water at 25 °C, rounded NIST values; verify every fitting and opening	CHECK REQUIRED
Total head / pump selection	NOT EVALUATED m at prescribed flow; PUMP CURVE NOT PROVIDED	NOT EVALUATED
Shaft power	Requires one pump, nonnegative head and entered efficiency	NOT EVALUATED
Operating point	PUMP CURVE NOT PROVIDED	NOT EVALUATED
NPSH	Enter source absolute pressure, vapor pressure and pump datum	NOT EVALUATED
Cavitation risk	NPSHA, NPSHr and project margin required	NOT EVALUATED
Control valve sizing	Validated model / required data unavailable	NOT EVALUATED
Water hammer	Validated model / required data unavailable	NOT EVALUATED
User velocity limit	CALCULATED NOT EVALUATED m/s; USER CRITERION ≤ NOT EVALUATED m/s	NOT EVALUATED
User pipe pressure-loss limit	CALCULATED NOT EVALUATED kPa/100 m; USER CRITERION ≤ NOT EVALUATED kPa/100 m	NOT EVALUATED
Minimum node pressure	CALCULATED NOT EVALUATED kPa(g); USER CRITERION ≥ NOT EVALUATED kPa(g)	NOT EVALUATED
Maximum pressure / entered MAWP	CALCULATED NOT EVALUATED kPa(g); USER CRITERION ≤ NOT EVALUATED kPa(g)	NOT EVALUATED
Pump operating range minimum	CALCULATED NOT EVALUATED m³/h; USER CRITERION ≥ NOT EVALUATED m³/h	NOT EVALUATED
Pump operating range maximum	CALCULATED NOT EVALUATED m³/h; USER CRITERION ≤ NOT EVALUATED m³/h	NOT EVALUATED
Motor shaft rating margin	CALCULATED NOT EVALUATED %; USER CRITERION ≥ NOT EVALUATED %	NOT EVALUATED