Fluid Library Notes
Properties are interpolated linearly between reference temperatures. Water, seawater, glycol and air values are well-characterized. Crude oil, natural gas and drilling mud vary widely by source — those presets are nominal estimates and should be replaced with assay or lab data for any real design. Cp and density feed the calculations directly; viscosity and k are shown for reference.
Units & Case Workflow
Units switch: toggling Imperial/metric converts every field on every tab in place; calculations always run in SI underneath, so results do not change — only the displayed numbers. Repeated toggling can shift the last displayed decimal; re-enter exact values before quoting them.
Flow units: GPM and m³/hr are volumetric — they convert through the stream's density field. If density is missing or zero, the flow field is cleared and the guardrail flags it rather than guessing.
Save keeps the case in this browser only. Export downloads a portable JSON file; Import reads one back. Imports are checked first: malformed JSON is rejected with no changes, unknown fields are ignored, and unknown unit settings fall back to the current ones with a note. Reset restores the built-in Example 01 sample case.
Limits
Use for discussion, learning, and proposal estimates only. Final design needs a qualified engineer, property data, code checks, pressure design, vibration, allowable pressure drop, fouling history, materials review, and vendor validation.