Results 21 to 30 of about 11,474 (200)

Study on Accuracy of CFD Simulations of Wind Environment around High-Rise Buildings: A Comparative Study of k-ε Turbulence Models Based on Polyhedral Meshes and Wind Tunnel Experiments

Applied Sciences, 2022
It is important to create a comfortable wind environment around high-rise buildings for outdoor activities. To predict the wind environment, Computational Fluid Dynamics (CFD) has been widely used by designers and engineers.
Minghui Xiong, Bing Chen, Hua Zhang, Yao Qian   +3 more
doaj   +1 more source

Accurate and efficient surface reconstruction from volume fraction data on general meshes [PDF]

, 2019
Simulations involving free surfaces and fluid interfaces are important in many areas of engineering. There is, however, still a need for improved simulation methods. Recently, a new efficient geometric VOF method called isoAdvector for general polyhedral
Roenby, Johan, Scheufler, Henning
core   +2 more sources

Comparative Evaluation of Mesh Types on the Numerical Simulation Efficiency and Accuracy of a Centrifugal Pump with Experimental Validation [PDF]

Journal of Applied Fluid Mechanics
The selection of an appropriate mesh type plays a critical role in the preprocessing stage of numerical simulations, as it directly influences both computational efficiency and result accuracy—this is equally true for centrifugal pump simulations.
P. Chen, J. Liu, B. Chen, Y. Song, S. Chen   +4 more
doaj   +1 more source

Analysis of Compatible Discrete Operator Schemes for the Stokes Equations on Polyhedral Meshes [PDF]

, 2014
Compatible Discrete Operator schemes preserve basic properties of the continuous model at the discrete level. They combine discrete differential operators that discretize exactly topological laws and discrete Hodge operators that approximate constitutive
Bonelle, Jerome, Ern, Alexandre
core   +6 more sources

Modeling Polyhedral Meshes with Affine Maps [PDF]

Computer Graphics Forum, 2012
AbstractWe offer a framework for editing and modeling of planar meshes, focusing on planar quad, and hexagonal‐dominant meshes, which are held in high demand in the field of architectural design. Our framework manipulates these meshes by affine maps that are assigned per‐face, and which naturally ensure the planarity of these faces throughout the ...
openaire   +1 more source

A Fast Particle-Locating Method for the Arbitrary Polyhedral Mesh

Algorithms, 2019
A fast particle-locating method is proposed for the hybrid Euler−Lagrangian models on the arbitrary polyhedral mesh, which is of essential importance to improve the computational efficiency by searching the host cells for the tracked particles very
Zongyang Li, Yefei Wang, Le Wang
doaj   +1 more source

Adaptive polyhedral meshing for approximate dynamic programming in control

Engineering Applications of Artificial Intelligence, 2022
[EN] This work proposes a new criterion for adaptive meshing in polyhedral partitions which interpolate a value function in Approximate Dynamic Programming (ADP) in optimal control problems. The criterion adds new points to a simplicial mesh, based on: a user-defined initial condition probability density function which determines `influential¿ regions ...
Antonio Sala, Leopoldo Armesto
openaire   +2 more sources

Sufficient mesh polyhedral intralesional injection for treatment of keloids

Journal of Cosmetic Dermatology, 2023
AbstractBackgroundThe recurrence of keloids after intralesional injections is significant, and a review of the literature shows an inconsistent range of success rates. In this study, the modified medical proportion and intralesional injection method were intended to enhance the treatment effect.MethodsTwenty patients completed the study. Regional block
Liya Jiang, Jun Zhuang, Xueshang Su, Qiaoyuan Zheng, Jintian Hu   +4 more
openaire   +2 more sources

Addressing Integration Error for Polygonal Finite Elements Through Polynomial Projections: A Patch Test Connection [PDF]

, 2013
Polygonal finite elements generally do not pass the patch test as a result of quadrature error in the evaluation of weak form integrals. In this work, we examine the consequences of lack of polynomial consistency and show that it can lead to a ...
Paulino, Glaucio H., Talischi, Cameron
core   +1 more source

Improving the Accuracy of Automatic Reconstruction of 3D Complex Buildings Models from Airborne Lidar Point Clouds

Remote Sensing, 2020
Due to high requirements of variety of 3D spatial data applications with respect to data amount and quality, automatized, efficient and reliable data acquisition and preprocessing methods are needed.
Marek Kulawiak, Zbigniew Lubniewski
doaj   +1 more source