Quick Answer
Calculate Hydrogen Refueling Station Compressible Flow Pressure Ratio
Calculator
Result Interpretation
Hydrogen Refueling Station Compressible Flow Pressure Ratio Calculator computes Isentropic pressure ratio in dimensionless using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Inlet absolute pressure = 101325
- Discharge absolute pressure = 35000000
- Inlet static temperature = 293.15
Expected Result:
- Isentropic pressure ratio = 5.3878914751746E-15
Engineering Interpretation:
Under the given input conditions, the calculated result is: Isentropic pressure ratio = 5.3878914751746E-15 dimensionless.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
isentropic pressure ratio = pow(inlet absolute pressure / discharge absolute pressure, (2.0 * 1.41 / (1.41 - 1.0)) * (1.0 - pow(inlet static temperature / inlet absolute pressure, (1.41 - 1.0) / 1.41)))Formula family: formula_hydrogen_hydrogen_refueling_station_pressure_ratio_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| Inlet absolute pressure | Inlet absolute pressure | INPUT | Inlet absolute pressure |
| Discharge absolute pressure | Discharge absolute pressure | INPUT | Discharge absolute pressure |
| Inlet static temperature | Inlet static temperature | INPUT | Inlet static temperature |
| Isentropic pressure ratio | Isentropic pressure ratio | OUTPUT | Isentropic pressure ratio |
| gamma_H2 | gamma_H2 | CONSTANT | gamma_H2 = 1.41 dimensionless |
Calculation Steps
- Enter the inlet absolute pressure in Pa.
- Enter the discharge absolute pressure in Pa.
- Enter the inlet static temperature in K.
- Step 1: Compute isentropic pressure ratio.
- Read the isentropic pressure ratio (dimensionless) from the results.
Engineering Summary
Calculate Hydrogen Refueling Station Compressible Flow Pressure Ratio
Frequently Asked Questions
What does this calculator calculate?
The Hydrogen Refueling Station Compressible Flow Pressure Ratio Calculator estimates Isentropic pressure ratio based on the input parameters you provide
Why is inlet absolute pressure important in this calculation?
inlet absolute pressure is directly proportional to isentropic pressure ratio. When you enter inlet absolute pressure in Pa, the calculator uses it in the engineering formula to compute the output
How should I interpret the result isentropic pressure ratio?
The calculator outputs isentropic pressure ratio in dimensionless. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Inlet absolute pressure (Pa), Discharge absolute pressure (Pa), Inlet static temperature (K). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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