Quick Answer
Calculate Hagen-Poiseuille-Based Injection Mold Cavity Fill Time Calculator
Calculator
Result Interpretation
Hagen-Poiseuille-Based Injection Mold Cavity Fill Time Calculator computes Cavity fill time in s using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Effective flow path length = 0.1
- Runner radius = 0.0015
- Cavity volume = 1.0E-5
- Melt viscosity = 150
- Pressure drop across runner = 100000000
Expected Result:
- Cavity fill time = 0.75451232280602
Engineering Interpretation:
Under the given input conditions, the calculated result is: Cavity fill time = 0.75451232280602 s.
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
cavity fill time = (8.0 * melt viscosity * effective flow path length * cavity volume) / (3.14159265358979 * pow(runner radius, 4) * pressure drop across runner)Formula family: formula_manufacturing_injection_mold_cavity_fill_time_pressure_drop_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| eta | Melt viscosity | INPUT | Melt viscosity |
| L | Effective flow path length | INPUT | Effective flow path length |
| V | Cavity volume | INPUT | Cavity volume |
| R | Runner radius | INPUT | Runner radius |
| delta_P | Pressure drop across runner | INPUT | Pressure drop across runner |
| cavity_fill_time | Cavity fill time | OUTPUT | Cavity fill time |
Calculation Steps
- Enter the melt viscosity in Pa·s.
- Enter the effective flow path length in m.
- Enter the cavity volume in m³.
- Enter the runner radius in m.
- Enter the pressure drop across runner in Pa.
- Step 1: Compute cavity fill time.
- Read the cavity fill time (s) from the results.
Engineering Summary
Calculate Hagen-Poiseuille-Based Injection Mold Cavity Fill Time Calculator
Frequently Asked Questions
What does this calculator calculate?
The Hagen-Poiseuille-Based Injection Mold Cavity Fill Time Calculator estimates Cavity fill time based on the input parameters you provide
Why is melt viscosity important in this calculation?
melt viscosity is directly proportional to cavity fill time. When you enter melt viscosity in Pa·s, the calculator uses it in the engineering formula to compute the output
How should I interpret the result cavity fill time?
The calculator outputs cavity fill time in s. 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: Melt viscosity (Pa·s), Effective flow path length (m), Cavity volume (m³), Runner radius (m), Pressure drop across runner (Pa). 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
Related Tools
Browse More Tools
Explore the full index of engineering calculators on this vertical site.