Description
Divide nonnegative integer revolutions by positive durationSeconds for frequencyHz, then multiply by signed slope and add intercept for velocity.
Flow calculations relate volume, time, cross-section, velocity, and supplied model parameters. A local ratio or contribution does not by itself solve a complete hydraulic system.
Divide nonnegative integer revolutions by positive durationSeconds for frequencyHz, then multiply by signed slope and add intercept for velocity.
When to use this tool
Use Stream Current Meter Frequency Point when you need one explicit flow component with coherent units and references.
How to use the tool and how it works
- Enter revolutions, durationSeconds, slope, intercept. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read frequencyHz, velocity. Use the output convention below.
Divide nonnegative integer revolutions by positive durationSeconds for frequencyHz, then multiply by signed slope and add intercept for velocity.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| revolutions | Revolutions | Required. Safe integer; minimum 0. |
| durationSeconds | Duration Seconds | Required. Finite number; strictly above 0. |
| slope | Slope | Required. Finite number. |
| intercept | Intercept | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| frequencyHz | Frequency Hz | Required. Finite number. |
| velocity | Velocity | Required. Finite number. |
{
"input": {
"revolutions": 30,
"durationSeconds": 10,
"slope": 0.2,
"intercept": 0.05
},
"output": {
"frequencyHz": 3,
"velocity": 0.6500000000000001
}
}Limitations and assumptions
- Slope is velocity per Hz and intercept uses velocity units; calibration is supplied and negative velocities are retained, without meter-specific range or field-flow verification.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use surveyed geometry, appropriate calibration, and a complete hydraulic model for operational or design decisions.
References
Similar or alternative tools
- Flow Depth Area Factor
Multiply positive width by meanDepth for area and divide signed flow by that area for meanVelocity.
- Stream Cross Section Panel Area
Average nonnegative leftDepth and rightDepth, multiply by nonnegative width for panel area, then multiply by signed meanVelocity for discharge.