Results 61 to 70 of about 6,968,776 (158)

Role of curvature in controlling SWBLI behavior in a hypersonic double ramp flow

Frontiers in Mechanical Engineering
Hypersonic flows generate intense unsteady pressure and thermal loads, posing significant challenges for high-speed aerospace applications such as re-entry vehicles and hypersonic cruise systems.
Abhinav Aggarwal, Rajesh Ranjan
doaj   +1 more source

Mean curvature flow singularities for mean convex surfaces [PDF]

, 1999
We study the evolution by mean curvature of a smooth n–dimensional surfaceM Rn+1, compact and with positive mean curvature. We first prove an estimate on the negative part of the scalar curvature of the surface.
Huisken, G., Sinestrari, C.
core   +1 more source

Reassessment of eddy viscosity turbulence models as alternatives to Reynolds stress models for gas cyclone separator CFD simulations

Scientific Reports
Various Reynolds stress turbulence model (RSM) formulations have been widely employed in computational fluid dynamics (CFD) simulations of gas cyclone separators for more than two decades, primarily because they do not rely on the Boussinesq hypothesis ...
Piyawut Thongnoi, Benjapon Chalermsinsuwan, Walairat Chandra-ambhorn, Patthranit Wongpromrat, Amata Anantpinijwatna, Natthawut Ruangtrakoon, Eakarach Bumrungthaichaichan, Santi Wattananusorn   +7 more
doaj   +1 more source

Non-local interaction in discrete Ricci curvature-induced biological aggregation

Royal Society Open Science
We investigate the collective dynamics of multi-agent systems in two- and three-dimensional environments generated by minimizing discrete Ricci curvature with local and non-local interaction neighbourhoods.
Jyotiranjan Beuria, Laxmidhar Behera
doaj   +1 more source

A hemodynamic analysis of energy loss in abdominal aortic aneurysm using three-dimension idealized model

Frontiers in Physiology
Objective: The aim of this study is to perform specific hemodynamic simulations of idealized abdominal aortic aneurysm (AAA) models with different diameters, curvatures and eccentricities and evaluate the risk of thrombosis and aneurysm rupture.Methods ...
Lulu Wang, Xudong Jiang, Kejia Zhang, Kai Chen, Peng Wu, Xiaoqiang Li   +5 more
doaj   +1 more source

Rigidity properties of Colding–Minicozzi entropies

Advanced Nonlinear Studies
We show certain rigidity for minimizers of generalized Colding–Minicozzi entropies. The proofs are elementary and work even in situations where the generalized entropies are not monotone along mean curvature flow.
Bernstein Jacob
doaj   +1 more source

Aeroelastic responses of curved panels under shock wave/boundary layer interaction

Kongqi donglixue xuebao
Shock wave/boundary layer interaction (SWBLI) is a complex flow phenomenon frequently encountered during high-speed flight, which can induce flow separation and subsequent structural flutter, posing a severe threat to flight safety and aerodynamic ...
Jialiang WANG, Jialiang WANG, Hao LIU, Yanchao HU, Mingzhi TANG, Wenfeng ZHOU, Xiping KOU, Shaowei WANG   +7 more
doaj   +1 more source

Improved flow prediction of non-ideal sonic nozzles by CFD-based surrogate modelling

Engineering Applications of Computational Fluid Mechanics
The use of sonic nozzles as a high-precision standard for gas flow measurements in various engineering and metrological applications is well-established.
Sebastian Weiss, Bodo Mickan, Kilian Oberleithner, Markus Bär, Sonja Schmelter   +4 more
doaj   +1 more source

Local Well-Posedness of Skew Mean Curvature Flow for Small Data in d ≥ 4 Dimensions. [PDF]

Commun Math Phys, 2022
Huang J, Tataru D.
europepmc   +1 more source

A PDE-Driven Laplacian Multi-Exposure Fusion for Structure-Preserving Image

Sakarya University Journal of Computer and Information Sciences
Multi-Exposure Image Fusion (MEF) aims to fuse a single visually symmetrical image, which combines the luminosity and preserves the structural data of a scene at different exposure levels.
Dhruv Jain, Ayush Dogra, Vinay Kukreja, Bhawna Goyal   +3 more
doaj   +1 more source