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Rate of change of frequency (RoCoF) and frequency nadir should be considered in real-time frequency-constrained optimal power flow (FCOPF) to ensure frequency stability of the modern power systems. Since calculating the frequency response…

系统与控制 · 电气工程与系统科学 2025-04-09 Fan Jiang , Xingpeng Li , Pascal Van Hentenryck

Simulating fluid flows in different virtual scenarios is of key importance in engineering applications. However, high-fidelity, full-order models relying, e.g., on the finite element method, are unaffordable whenever fluid flows must be…

流体动力学 · 物理学 2021-11-24 Stefania Fresca , Andrea Manzoni

Motivated by oceanographic observational datasets, we propose a probabilistic neural network (PNN) model for calculating turbulent energy dissipation rates from vertical columns of velocity and density gradients in density stratified…

流体动力学 · 物理学 2021-12-03 Sam F. Lewin , Stephen M. de Bruyn Kops , Gavin D. Portwood , Colm-cille P. Caulfield

Recent endeavors aimed at forecasting future traffic flow states through deep learning encounter various challenges and yield diverse outcomes. A notable obstacle arises from the substantial data requirements of deep learning models, a…

机器学习 · 计算机科学 2024-04-02 Zhaohui Yang , Kshitij Jerath

This work determines the inaccuracy of using Reynolds averaged Navier Stokes (RANS) turbulence models in transition to turbulent flow regimes by predicting the model-based discrepancies between RANS and large eddy simulation (LES) models…

流体动力学 · 物理学 2019-01-21 Mustafa Usta , Ali Tosyali

Turbulent flows consist of a wide range of interacting scales. Since the scale range increases as some power of the flow Reynolds number, a faithful simulation of the entire scale range is prohibitively expensive at high Reynolds numbers.…

流体动力学 · 物理学 2023-07-24 Dhawal Buaria , Katepalli R. Sreenivasan

Generating eye diagrams by using a circuit simulator can be very computationally intensive, especially in the presence of nonlinearities. It often involves multiple Newton-like iterations at every time step when a SPICE-like circuit…

信号处理 · 电气工程与系统科学 2019-02-11 Thong Nguyen , Tianjian Lu , Ken Wu , Jose Schutt-Aine

Anticipating the future actions of a human is a widely studied problem in robotics that requires spatio-temporal reasoning. In this work we propose a deep learning approach for anticipation in sensory-rich robotics applications. We…

计算机视觉与模式识别 · 计算机科学 2015-09-17 Ashesh Jain , Avi Singh , Hema S Koppula , Shane Soh , Ashutosh Saxena

Scour around bridge piers is a critical challenge for infrastructures around the world. In the absence of analytical models and due to the complexity of the scour process, it is difficult for current empirical methods to achieve accurate…

机器学习 · 计算机科学 2024-05-06 Tahrima Hashem , Negin Yousefpour

The present study represents a data-driven turbulent model with Galilean invariance preservation based on machine learning algorithm. The fully connected neural network (FCNN) and tensor basis neural network (TBNN) [Ling et al. (2016)] are…

流体动力学 · 物理学 2025-02-11 Xuepeng Fu , Shixiao Fu , Chang Liu , Mengmeng Zhang , Qihan Hu

The predictive learning of spatiotemporal sequences aims to generate future images by learning from the historical context, where the visual dynamics are believed to have modular structures that can be learned with compositional subsystems.…

机器学习 · 计算机科学 2022-04-12 Yunbo Wang , Haixu Wu , Jianjin Zhang , Zhifeng Gao , Jianmin Wang , Philip S. Yu , Mingsheng Long

Long Short-Term Memory (LSTM) neural networks have been widely used for time series forecasting problems. However, LSTMs are prone to overfitting and performance reduction during test phases. Several different regularization techniques have…

机器学习 · 计算机科学 2021-09-27 Mahdy Shirdel , Reza Asadi , Duc Do , Micheal Hintlian

Achievement of solutions in Navier-Stokes equation is one of challenging quests, especially for its closure problem. For achievement of particular solutions, there are variety of numerical simulations including Direct Numerical Simulation…

计算物理 · 物理学 2018-11-13 Jinu Lee , Sangseung Lee , Donghyun You

In this research paper, we study the capability of artificial neural network models to emulate storm surge based on the storm track/size/intensity history, leveraging a database of synthetic storm simulations. Traditionally, Computational…

机器学习 · 计算机科学 2022-04-21 Ehsan Adeli , Luning Sun , Jianxun Wang , Alexandros A. Taflanidis

A modelling framework based on the resolvent analysis and machine learning is proposed to predict the turbulent energy in incompressible channel flows. In the framework, the optimal resolvent response modes are selected as the basis…

流体动力学 · 物理学 2024-03-11 Yitong Fan , Bo Chen , Weipeng Li

In this paper, we investigate neural networks applied to multiscale simulations and discuss a design of a novel deep neural network model reduction approach for multiscale problems. Due to the multiscale nature of the medium, the fine-grid…

In the past three decades, a wide array of computational methodologies and simulation frameworks has emerged to address the complexities of modeling multi-phase flow and transport processes in fractured porous media. The conformal mesh…

机器学习 · 计算机科学 2025-02-26 Mohammed Al Kobaisi , Wenjuan Zhang , Waleed Diab , Hadi Hajibeygi

Traveling waves of neural activity have been observed throughout the brain at a diversity of regions and scales; however, their precise computational role is still debated. One physically inspired hypothesis suggests that the cortical sheet…

神经与进化计算 · 计算机科学 2024-03-18 T. Anderson Keller , Lyle Muller , Terrence Sejnowski , Max Welling

Recurrent Neural Networks (RNNs) have become the state-of-the-art choice for extracting patterns from temporal sequences. However, current RNN models are ill-suited to process irregularly sampled data triggered by events generated in…

机器学习 · 计算机科学 2016-11-01 Daniel Neil , Michael Pfeiffer , Shih-Chii Liu

Predicting large-scale transportation network traffic has become an important and challenging topic in recent decades. Inspired by the domain knowledge of motion prediction, in which the future motion of an object can be predicted based on…

机器学习 · 计算机科学 2017-05-09 Haiyang Yu , Zhihai Wu , Shuqin Wang , Yunpeng Wang , Xiaolei Ma