Geology Specific Yield Gravity Drainage Calculator
Evaporation-corrected actual gravity drainage experiments, not total porosity or elastic storativity. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Description
Specific yield is the fraction of a bulk sample volume that drains under a defined gravity-drainage protocol.
Specific yield is the fraction of a bulk sample volume that drains under a defined gravity-drainage protocol.1
Accounting separately for evaporation helps distinguish drained water from water lost through another pathway. Use this tool to calculate specific yield gravity drainage from the supplied measurements and assumptions.
When to use Geology Specific Yield Gravity Drainage Calculator
Use this tool to calculate specific yield gravity drainage from the supplied measurements and assumptions. Establish the measurement units, sampled interval, calibration or model edition and geological assumptions before entering data.
How to use Geology Specific Yield Gravity Drainage Calculator and understand its results
- Establish the measurement units, sampled interval, calibration or model edition and geological assumptions before entering data.
- Enter saturatedBulkVolumes, drainedVolumes, independentEvaporationLosses, using the field meanings and rules below, then run the tool.
- Read specificYield. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| saturatedBulkVolumes | Saturated bulk volumes | list of number | Required |
| drainedVolumes | Drained volumes | list of number | Required |
| independentEvaporationLosses | Independent evaporation losses | list of number | Required |
Enter nonempty aligned positive bulk volumes and nonnegative drained volumes and independent evaporation losses, all on one volume basis. Calculate net drainage as drained minus evaporation, requiring each net to lie between zero and its bulk volume. Divide pooled net drainage by pooled bulk volume; do not average sample fractions.
specificYield=Σ(drained_i−evaporation_i)/ΣbulkVolume_i Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| specificYield | Specific Yield; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"saturatedBulkVolumes": [
1,
2
],
"drainedVolumes": [
0.1,
0.4
],
"independentEvaporationLosses": [
0.01,
0.02
]
},
"output": {
"specificYield": 0.15666666666666668
}
}Limitations and assumptions
Accounting separately for evaporation helps distinguish drained water from water lost through another pathway. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Geology Effective Porosity Calculator for this related task: Effective porosity excludes independently estimated dead-end volume from a supplied connected pore volume.
Use Geology Fracture Porosity Calculator when its separate inputs and assumptions fit the question: Fracture porosity compares an estimated fracture void volume with the bulk volume containing it.
References
Similar or alternative tools
- Geology Effective Porosity Calculator
Effective porosity excludes independently estimated dead-end volume from a supplied connected pore volume.
- Geology Fracture Porosity Calculator
Fracture porosity compares an estimated fracture void volume with the bulk volume containing it.