Scalable DAE-Constrained PINODE Framework for Vapor-Compression HVAC Systems

Preprint Aug 2026

An end-to-end differentiable transient vapor-compression framework for automated machine sizing and unified optimal control

Accelerating the electrification of thermal energy requires vapor-compression heat pumps capable of dynamic, grid-responsive operation. However, equipment engineering remains fragmented across static rating-point selection, stiff multi-phase transient simulation, and gradient-based optimal control. Here, we present an...

Sam Yang · 0 citations

Preprint Aug 2026

Physics-integrated neural network modeling of heat and mass transfer in cryogenic liquid storage under static and dynamic conditions

Accurate system-level prediction of cryogenic liquid storage remains challenging because reduced-order models rely on regime-dependent closures for unresolved heat and mass transfer, particularly under sloshing. We present a physics-integrated neural-network framework that combines a conservation-based zero-dimensional...

P. Marques, Samuel Ahizi, M. A. Mendez · 0 citations

Sep 2026

Scalable Predictive Control for District Heating Networks: A Physics-Guided Koopman Operator Approach

This article addresses the control of large-scale district heating networks (DHNs). Traditional nonlinear model predictive control (MPC) suffers from computational intractability due to the nonconvex optimization of complex thermal-hydraulic dynamics. We present scalable predictive control strategies based on the Koopm...

Max Sibeijn, Mohammad Khosravi, S. Pequito et al. · IEEE Transactions on Control... · 0 citations

Preprint Jul 2026

Discrete Boltzmann model at Burnett level for compressible multicomponent flows under external forces

This work extends the Burnett-level discrete Boltzmann model (DBM) from single-component to multicomponent compressible flows under external forces, building on the fundamental framework of the high-precision discrete kinetic method. A high-isotropy 25-discrete-velocity set is adopted to guarantee numerical stability a...

De-Mei Li, Hui-Lin Lai, Chuan-Dong Lin et al. · 0 citations

Sep 2026

Optimization and backpressure mechanisms of a ramjet flowpath in an over/under turbine-based combined cycle inlet

Two-dimensional variable-geometry inlets are key to wide-envelope operation of over/under turbine-based combined-cycle engines, but their ramjet flowpaths must balance aerodynamic compression, installation constraints, and flow regulation during mode transition. For a single fixed ramjet-flowpath geometry operating ove...

Sheng Zhang, Hai-Feng Yue, Ze-Ming Gao et al. · The Physics of Fluids · 0 citations

Conference Aug 2026

Automated High-Pressure Gas Lift Optimization: Coupling Surface Constraints With Subsurface Dynamics

High-pressure gas lift (HPGL) is a practical artificial lift option for unconventional wells because it enables deep single-point gas injection, eliminates the need for staged gas-lift valves and packers, and allows operators to produce through either the annulus or the tubing, depending on well conditions and well l...

Jefferson Ogbuka, S. Leggett, R. Reynolds · Americas · 0 citations