30 citations · 53 across the 9 of their papers we have counts for
9 papers
A dynamic combustion model for supersonic turbulent combustion
Xu Zhu, Jian An, Nana Wang +2
Supersonic combustion plays a vital role in various applications, including scramjets, dual-mode ramjets, and pulse detonation engines. However, the flame characteristics can vary…
An investigation of subgrid mixing timescale modelling in LES of supersonic turbulent flames
Jian An, Jieli Wei, Jian Zhanga +2
The predictive numerical simulation of supersonic turbulent combustion, in which the turbulent intensity is high and the fuel/air mixture is near the flammability limit, remains ch…
Kinetics Parameter Optimization via Neural Ordinary Differential Equations
Xingyu Su, Weiqi Ji, Jian An +3
Chemical kinetics mechanisms are essential for understanding, analyzing, and simulating complex combustion phenomena. In this study, a Neural Ordinary Differential Equation (Neural…
Neural Differential Equations for Inverse Modeling in Model Combustors
Xingyu Su, Weiqi Ji, Long Zhang +3
Monitoring the dynamics processes in combustors is crucial for safe and efficient operations. However, in practice, only limited data can be obtained due to limitations in the meas…
Arrhenius.jl: A Differentiable Combustion SimulationPackage
Weiqi Ji, Xingyu Su, Bin Pang +6
Combustion kinetic modeling is an integral part of combustion simulation, and extensive studies have been devoted to developing both high fidelity and computationally affordable mo…
Large eddy simulation of a supersonic lifted hydrogen flame with sparse-Lagrangian multiple mapping conditioning approach
Zhiwei Huang, Matthew J. Cleary, Zhuyin Ren +1
The Multiple Mapping Conditioning / Large Eddy Simulation (MMC-LES) approach is used to simulate a supersonic lifted hydrogen jet flame, which features shock-induced autoignition,…
Machine Learning Approaches to Learn HyChem Models
Weiqi Ji, Julian Zanders, Ji-Woong Park +1
The HyChem approach has recently been proposed for modeling high-temperature combustion of real, multi-component fuels. The approach combines lumped reaction steps for fuel thermal…
Kinetic Similarity between Extinction Strain Rate and Laminar Flame Speed
Weiqi Ji, Tianwei Yang, Zhuyin Ren +1
Extinction strain rate (ESR) and laminar flame speed (LFS) are fundamental properties of a fuel/air mixture that are often utilized as scaling parameters in turbulent combustion. W…
Uncertainty Propagation in Deep Neural Network Using Active Subspace
Weiqi Ji, Zhuyin Ren, Chung K. Law
The inputs of deep neural network (DNN) from real-world data usually come with uncertainties. Yet, it is challenging to propagate the uncertainty in the input features to the DNN p…