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UID:pretalx-amfc2026-3FL3P9@modelica.simtek.cc
DTSTART;TZID=CST:20260922T115500
DTEND;TZID=CST:20260922T122000
DESCRIPTION:This paper develops an FMI-oriented one-dimensional transient t
 hermal-hydraulic model for separated heat pipes used in passive residual h
 eat-removal systems. The heat pipe is represented by modular control volum
 es for the evaporator\, vapor riser\, condenser\, downcomer\, wick\, wall\
 , vapor chamber\, and external water tank. The model combines a nodal ther
 mal-resistance network with a Knudsen-number startup criterion\, vapor pre
 ssure-drop closure\, Clausius-Clapeyron temperature-pressure coupling\, ph
 ase-change source terms\, and capillary/gravity-assisted return-flow closu
 re. The resulting ordinary differential equations are solved using a three
 -stage Gauss-Legendre implicit Runge-Kutta method. To address system-level
  reuse\, the physics\, solver\, parameters\, inputs\, outputs\, and state-
 update routines are organized according to FMI Co-Simulation semantics\, e
 nabling later FMU wrapping without changing the core solver. Validation ag
 ainst small-scale and large-scale heat-pipe data shows temperature and flo
 w-rate deviations of approximately 10% or less\, supporting fast integrati
 on in Modelica-based accident-transient simulations.
DTSTAMP:20261004T070607Z
LOCATION:Energy (R2002)
SUMMARY:Development of an FMI-Oriented One-Dimensional Transient Heat Trans
 fer Model for Separated Heat Pipes - Peng Ju\, Xinchen Wang\, Yujie Wang\,
  Lei Peng\, Xinxin Li
URL:https://modelica.simtek.cc/amfc2026/talk/3FL3P9/
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