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Turbulent flows are fundamental in engineering and the environment, but their chaotic and three-dimensional (3-D) nature makes them computationally expensive to simulate. In this work, a dimensionality reduction technique is investigated to…

流体动力学 · 物理学 2020-12-16 Bernat Font

We propose a novel modular inference approach combining two different generative models -- generative adversarial networks (GAN) and normalizing flows -- to approximate the posterior distribution of physics-based Bayesian inverse problems…

计算工程、金融与科学 · 计算机科学 2023-10-10 Agnimitra Dasgupta , Dhruv V Patel , Deep Ray , Erik A Johnson , Assad A Oberai

We analyse and compare various empirical models of wall pressure spectra beneath turbulent boundary layers and propose an alternative machine learning approach using Artificial Neural Networks (ANN). The analysis and the training of the ANN…

流体动力学 · 物理学 2022-03-14 J. Dominique , J. Van den Berghe , C. Schram , M. A. Mendez

Knowing the pressure at all times in each node of a water distribution system (WDS) facilitates safe and efficient operation. Yet, complete measurement data cannot be collected due to the limited number of instruments in a real-life WDS.…

机器学习 · 计算机科学 2021-11-09 Gergely Hajgató , Bálint Gyires-Tóth , György Paál

Soft sensors are crucial in bridging autonomous systems' physical and digital realms, enhancing sensor fusion and perception. Instead of deploying soft sensors on the Cloud, this study shift towards employing on-device soft sensors,…

机器学习 · 计算机科学 2024-10-15 Tianheng Ling , Chao Qian , Gregor Schiele

Magnetic resonance imaging (MRI) can estimate three-dimensional (3D) time-resolved relative pressure fields using 4D-flow MRI, thereby providing rich pressure field information. Clinical alternatives include catheterization and Doppler…

A turbulent boundary layer is an essential flow case of fundamental and applied fluid mechanics. However, accurate measurements of turbulent boundary layer parameters (e.g., friction velocity $u_\tau$ and wall shear $\tau_w$), are…

流体动力学 · 物理学 2020-08-26 Zhao Pan , Yang Zhang , Jonas P. R. Gustavsson , Jean-Pierre Hickey , Louis N. Cattafesta

The 3D Gaussian Splatting (3D-GS) is a novel method for scene representation and view synthesis. Although Scaffold-GS achieves higher quality real-time rendering compared to the original 3D-GS, its fine-grained rendering of the scene is…

计算机视觉与模式识别 · 计算机科学 2026-01-06 Chenyang Xu , XingGuo Deng , Rui Zhong

Low Gain Avalanche Detectors (LGAD) are based on a n++-p+-p-p++ structure where an appropriate doping of the multiplication layer (p+) leads to high enough electric fields for impact ionization. Gain factors of few tens in charge…

3D Gaussian splatting enables high-quality novel view synthesis (NVS) at real-time frame rates. However, its quality drops sharply as we depart from the training views. Thus, dense captures are needed to match the high-quality expectations…

Underwater sonar imaging plays a crucial role in various applications, including autonomous navigation in murky water, marine archaeology, and environmental monitoring. However, the unique characteristics of sonar images, such as complex…

计算机视觉与模式识别 · 计算机科学 2026-01-13 Shida Xu , Jingqi Jiang , Jonatan Scharff Willners , Sen Wang

3D scene flow estimation from point clouds is a low-level 3D motion perception task in computer vision. Flow embedding is a commonly used technique in scene flow estimation, and it encodes the point motion between two consecutive frames.…

计算机视觉与模式识别 · 计算机科学 2022-07-20 Guangming Wang , Yunzhe Hu , Zhe Liu , Yiyang Zhou , Masayoshi Tomizuka , Wei Zhan , Hesheng Wang

Data from fluid flow measurements are typically sparse, noisy, and heterogeneous, often from mixed pressure and velocity measurements, resulting in incomplete datasets. In this paper, we develop a physics-constrained convolutional neural…

流体动力学 · 物理学 2025-08-13 Yaxin Mo , Luca Magri

We design a nonlinear estimator for channel flows at $Re_{\tau}=180$ and $590$. The nonlinear estimator uses a linear estimator structure based on the linearised Navier-Stokes equations and explicitly calculates the nonlinear forcing from…

流体动力学 · 物理学 2024-08-26 Jitong Ding , Simon J. Illingworth

In this study, we present an end-to-end pipeline capable of converting drone-captured video streams into high-fidelity 3D reconstructions with minimal latency. Unmanned aerial vehicles (UAVs) are extensively used in aerial real-time…

计算机视觉与模式识别 · 计算机科学 2026-02-25 Christos Maikos , Georgios Angelidis , Georgios Th. Papadopoulos

We propose a physics-informed machine-learned framework for sensor-based flow estimation for drone trajectories in complex urban terrain. The input is a rich set of flow simulations at many wind conditions. The outputs are velocity and…

Reconstruction of field quantities from sparse measurements is a problem arising in a broad spectrum of applications. This task is particularly challenging when the mapping between sparse measurements and field quantities is performed in an…

流体动力学 · 物理学 2022-10-20 Alejandro Güemes , Carlos Sanmiguel Vila , Stefano Discetti

Scene flow estimation is the task of describing 3D motion between temporally successive observations. This thesis aims to build the foundation for building scene flow estimators with two important properties: they are scalable, i.e. they…

计算机视觉与模式识别 · 计算机科学 2025-03-21 Kyle Vedder

Most advances in 3D Generative Adversarial Networks (3D GANs) largely depend on ray casting-based volume rendering, which incurs demanding rendering costs. One promising alternative is rasterization-based 3D Gaussian Splatting (3D-GS),…

计算机视觉与模式识别 · 计算机科学 2024-11-18 Sangeek Hyun , Jae-Pil Heo

In this article we develop a three dimensional (3D) analytical model of wireless networks. We establish an analytical expression of the SINR (Signal to Interference plus Noise Ratio) of user equipments (UE), by using a 3D fluid model…

信息论 · 计算机科学 2016-04-18 Jean-Marc Kelif , Marceau Coupechoux