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High-fidelity flow simulations are indispensable when analyzing systems exhibiting multiphase flow phenomena. The accuracy of multiphase flow simulations is strongly contingent upon the finest mesh resolution used to represent the…

This work presents a robust and efficient sharp interface immersed boundary (IBM) framework, which is applicable for all-speed flow regimes and is capable of handling arbitrarily complex bodies (stationary or moving). The work deploys an…

计算物理 · 物理学 2021-01-22 Pradeep Kumar Seshadri , Ashoke De

A new approach to prevent spurious behavior caused by conventional shock-capturing schemes when solving stiff detonation waves problems is introduced in the present work. Due to smearing of discontinuous solution by the excessive numerical…

计算物理 · 物理学 2017-08-04 Xi Deng , Honghui Teng , Bin Xie , Feng Xiao

Facade parsing stands as a pivotal computer vision task with far-reaching applications in areas like architecture, urban planning, and energy efficiency. Despite the recent success of deep learning-based methods in yielding impressive…

计算机视觉与模式识别 · 计算机科学 2023-10-10 Bowen Wang , Jiaxing Zhang , Ran Zhang , Yunqin Li , Liangzhi Li , Yuta Nakashima

This work considers a Stokes flow in a deformable fracture interacting with a linear elastic medium. To this end, we employ a phase-field model to approximate the crack dynamics. Phase-field methods belong to interface-capturing approaches…

数值分析 · 数学 2024-04-15 Henry von Wahl , Thomas Wick

Geometric flux-based Volume-of-Fluid (VOF) methods are widely considered consistent in handling two-phase flows with high density ratios. However, although the conservation of mass and momentum is consistent for two-phase incompressible…

Second order accurate Cartesian grid methods have been well developed for interface problems in the literature. However, it is challenging to develop third or higher order accurate methods for problems with curved interfaces and internal…

数值分析 · 数学 2022-06-14 Zhilin Li , Kejia Pan , Juan Ruiz

Due to large pixel movement and high computational cost, estimating the motion of high-resolution frames is challenging. Thus, most flow-based Video Frame Interpolation (VFI) methods first predict bidirectional flows at low resolution and…

计算机视觉与模式识别 · 计算机科学 2025-11-21 Chenyang Wu , Jiayi Fu , Chun-Le Guo , Shuhao Han , Chongyi Li

An advanced Volume of Fluid (VOF) method is presented that enables performant three-dimensional Direct Numerical Simulations (DNS) of the interaction of two immiscible fluids in a gaseous environment with large topology changes, e.g.,…

流体动力学 · 物理学 2023-11-08 Johanna Potyka , Kathrin Schulte

In this paper we propose a high-order accurate scheme for image segmentation based on the level-set method. In this approach, the curve evolution is described as the 0-level set of a representation function but we modify the velocity that…

数值分析 · 数学 2020-01-08 Maurizio Falcone , Giulio Paolucci , Silvia Tozza

In this paper, a methodology for modelling two-phase flows based on a conservative level set method in the framework of finite volume method is presented. The novelty of the interface capturing method used here lies on the advection of…

计算物理 · 物理学 2021-10-22 Panagiotis Lyras , Antoine Hubert , Konstantinos G. Lyras

We present a characterization of the forcing and the sub-filter scale terms produced in the volume-filtering immersed boundary (VF-IB) method by Dave et al, JCP, 2023. The process of volume-filtering produces bodyforces in the form of…

数值分析 · 数学 2024-07-16 Dave Himanshu , Herrmann Marcus , Brady Peter , M. Houssem Kasbaoui

The U-shape structure has shown its advantage in salient object detection for efficiently combining multi-scale features. However, most existing U-shape based methods focused on improving the bottom-up and top-down pathways while ignoring…

计算机视觉与模式识别 · 计算机科学 2020-12-25 Jiang-Jiang Liu , Zhi-Ang Liu , Ming-Ming Cheng

Implicit neural networks have emerged as a crucial technology in 3D surface reconstruction. To reconstruct continuous surfaces from discrete point clouds, encoding the input points into regular grid features (plane or volume) has been…

计算机视觉与模式识别 · 计算机科学 2024-01-05 Shengtao Li , Ge Gao , Yudong Liu , Yu-Shen Liu , Ming Gu

In the context of unfitted finite element discretizations the realization of high order methods is challenging due to the fact that the geometry approximation has to be sufficiently accurate. We consider a new unfitted finite element method…

数值分析 · 数学 2017-06-27 Christoph Lehrenfeld , Arnold Reusken

In this paper, we present a multi-dimensional, arbitrary-order hybrid reconstruction framework for compressible flows on unstructured meshes. The method combines the efficiency of linear reconstruction with the robustness of high-order…

数值分析 · 数学 2026-01-22 Yiren Tong , Panagiotis Tsoutsanis

This study employs physics-informed neural networks (PINNs) to reconstruct multiple flow fields in a transient natural convection system solely based on instantaneous temperature data at an arbitrary moment. Transient convection problems…

流体动力学 · 物理学 2024-10-11 Nagahiro Ohashi , Nam Phuong Nguyen , Leslie K. Hwang , Beomjin Kwon

Human face images usually appear with wide range of visual scales. The existing face representations pursue the bandwidth of handling scale variation via multi-scale scheme that assembles a finite series of predefined scales. Such…

计算机视觉与模式识别 · 计算机科学 2022-09-20 Hailin Shi , Hang Du , Yibo Hu , Jun Wang , Dan Zeng , Ting Yao

This study introduces an order-lifted inversion/retrieval method for implementing high-order schemes within the framework of an unstructured-mesh-based finite-volume method. This method defines a special representation called the data…

流体动力学 · 物理学 2025-01-20 Hao Guo , Peixue Jiang , Xiaofeng Ma , Boxing Hu , Yinhai Zhu

We present STITCH, a novel approach for neural implicit surface reconstruction of a sparse and irregularly spaced point cloud while enforcing topological constraints (such as having a single connected component). We develop a new…

计算机视觉与模式识别 · 计算机科学 2025-01-10 Anushrut Jignasu , Ethan Herron , Zhanhong Jiang , Soumik Sarkar , Chinmay Hegde , Baskar Ganapathysubramanian , Aditya Balu , Adarsh Krishnamurthy