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UID:pretalx-amfc2026-PPUWW9@modelica.simtek.cc
DTSTART;TZID=CST:20260921T160000
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DESCRIPTION:System simulation of high-pressure liquid–gas ejectors requir
 es compact pressure–flow representations. This work compares two reduced
 -order models of the same fixed-geometry water–methane ejector against a
  21-point CFD pressure-response database: an effective-area onedimensional
  model and an explicit quadratic surrogate derived from the CFD data. With
  leave-one-out errors normalized by the global CFD response range\, the su
 rrogate gives NRMSEs of 1.19%\, 0.80%\, and 0.71% for primary flow\, secon
 dary flow\, and entrainment ratio\; the 1D model gives 1.31%\, 5.49%\, and
  5.52%. Both models are implemented in Modelica and exported through FMI 2
 .0. The surrogate CS FMU matches the native Modelica scheduling trajectory
  to machine precision. Coupled to a first-order back-pressure actuator\, t
 he surrogate supports inverse entrainment-ratio scheduling with settling t
 imes of 7.0 and 7.6 s. The two formulations therefore offer complementary 
 choices for reusable system simulation.
DTSTAMP:20261004T070827Z
LOCATION:FMI & MBSE (R2001)
SUMMARY:High-Pressure Liquid–Gas Ejector Models for System Simulation in 
 Modelica - Jinglong Zhou\, Jie Cheng
URL:https://modelica.simtek.cc/amfc2026/talk/PPUWW9/
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