⚙️ Ejector & Eductor Jet Pump
Model high-velocity motive jet entrainment, suction flow rate, 1D mixing chamber momentum balance, pressure lift ratio (N), entrainment mass ratio (Rm), and diffuser recovery.
⚡ Fortran 90 Engine
Double Precision (IEEE 754)
✓ ISO / ASME Validated
📊 Solver Telemetry
● ACTIVE
👁️ Consultations
27
⚡ Calculs faits
21
💾 Téléchargements
330
📦 Code Fortran
4.5 KB
📅 Mise en service
Aug 2026
⏱️ Latence
< 1 ms
⚙️ Ejector / Eductor Fluid Entrainment Dynamics
High-speed motive jet, suction entrainment & diffuser pressure recovery📝 Configuration & Presets
Key Formulations:
• Motive Jet: Vm = Cv √(2(Pm − Ps)/ρm)
• Entrainment Ratio: Rm = ṁs / ṁm
• Pressure Lift Ratio: N = (Pout − Ps) / (Pm − Ps)
• Area Ratio: RA = Anozzle / Amix = (dm / dmix)²
• Motive Jet: Vm = Cv √(2(Pm − Ps)/ρm)
• Entrainment Ratio: Rm = ṁs / ṁm
• Pressure Lift Ratio: N = (Pout − Ps) / (Pm − Ps)
• Area Ratio: RA = Anozzle / Amix = (dm / dmix)²
📊 Performance Results
Configure inputs and click Compute to view results.
📘 Calculation Methodology & Engineering Theory
1D Momentum Conservation
Ejectors transfer momentum from a high-velocity driving jet to a low-pressure secondary fluid within a constant-area mixing throat:
(P1 − P2) Amix = ṁtotal V2 − (ṁm Vm1 + ṁs Vs1) + Ffriction
Diffuser Pressure Recovery
The mixed fluid decelerates in the diverging section, converting dynamic pressure into static pressure rise:
Pout = P2 + ηdiff · ½ ρmix (Vmix² − Vout²)
Key Engineering Assumptions
- Complete mixing achieved within the mixing tube length ($L_{mix} \approx 6 \text{ to } 8 \cdot d_{mix}$).
- Subsonic flow in mixing section (incompressible liquid or moderate gas velocity).
- Nozzle discharge coefficient $C_v \approx 0.92 - 0.96$.
- Diffuser static pressure recovery efficiency $\eta_{diff} \approx 0.75 - 0.85$.