Search Results for author: Haibin Chang

Found 10 papers, 0 papers with code

Identification of Physical Processes and Unknown Parameters of 3D Groundwater Contaminant Problems via Theory-guided U-net

no code implementations30 Apr 2022 Tianhao He, Haibin Chang, Dongxiao Zhang

Furthermore, based on the constructed TgU-net surrogate, a data assimilation method is employed to identify the physical process and parameters simultaneously.

Model Selection

Deep learning based closed-loop optimization of geothermal reservoir production

no code implementations15 Apr 2022 Nanzhe Wang, Haibin Chang, Xiangzhao Kong, Martin O. Saar, Dongxiao Zhang

In this work, we propose a closed-loop optimization framework, based on deep learning surrogates, for the well control optimization of geothermal reservoirs.

Management

Deep-learning-based upscaling method for geologic models via theory-guided convolutional neural network

no code implementations31 Dec 2021 Nanzhe Wang, Qinzhuo Liao, Haibin Chang, Dongxiao Zhang

The results show that the deep learning method can provide equivalent upscaling accuracy to the numerical method, and efficiency can be improved significantly compared to numerical upscaling.

Surrogate and inverse modeling for two-phase flow in porous media via theory-guided convolutional neural network

no code implementations12 Oct 2021 Nanzhe Wang, Haibin Chang, Dongxiao Zhang

Pressure and saturation are coupled with each other in the governing equations, and thus the two networks are also mutually conditioned in the training process by the discretized governing equations, which also increases the difficulty of model training.

Theory-guided Auto-Encoder for Surrogate Construction and Inverse Modeling

no code implementations17 Nov 2020 Nanzhe Wang, Haibin Chang, Dongxiao Zhang

In order to achieve the theory-guided training, the governing equations of the studied problems can be discretized and the finite difference scheme of the equations can be embedded into the training of CNN.

Uncertainty Quantification

DLGA-PDE: Discovery of PDEs with incomplete candidate library via combination of deep learning and genetic algorithm

no code implementations21 Jan 2020 Hao Xu, Haibin Chang, Dongxiao Zhang

In the proposed framework, a deep neural network that is trained with available data of a physical problem is utilized to generate meta-data and calculate derivatives, and the genetic algorithm is then employed to discover the underlying PDE.

Deep Learning of Subsurface Flow via Theory-guided Neural Network

no code implementations24 Oct 2019 Nanzhe Wang, Dongxiao Zhang, Haibin Chang, Heng Li

The TgNN can achieve higher accuracy than the ordinary Artificial Neural Network (ANN) because the former provides physically feasible predictions and can be more readily generalized beyond the regimes covered with the training data.

Transfer Learning

DL-PDE: Deep-learning based data-driven discovery of partial differential equations from discrete and noisy data

no code implementations13 Aug 2019 Hao Xu, Haibin Chang, Dongxiao Zhang

However, prior to achieving this goal, major challenges remain to be resolved, including learning PDE under noisy data and limited discrete data.

Identification of physical processes via combined data-driven and data-assimilation methods

no code implementations29 Oct 2018 Haibin Chang, Dongxiao Zhang

Using the training data set, a data-driven method is developed to learn the governing equation of the considered physical problem by identifying the occurred (or dominated) processes and selecting the proper empirical model.

Cannot find the paper you are looking for? You can Submit a new open access paper.