Results 71 to 80 of about 16,122 (222)

Numerical investigation of thermally developed MHD flow with pulsation in a channel with multiple constrictions

AIP Advances, 2021
This article concerns heat transfer analysis in pulsating flow in a channel with walls having multiple symmetric constrictions. The flow is influenced by Lorentz force and thermal radiation. The unsteady governing equations, simplified for low conducting
Amjad Ali, Attia Fatima, Zainab Bukhari, Hamayun Farooq, Zaheer Abbas   +4 more
doaj   +1 more source

Vorticity-velocity-pressure formulation for the Stokes problem

, 2002
International audienceWe present a new variational formulation of Stokes problem of fluid mechanics that allows to take into account very general boundary conditions for velocity, tangential vorticity or pressure.
Dubois, François
core   +1 more source

Mixing Behavior of Natural Gas and Hydrogen in a High‐Efficiency Vane (HEV) Static Mixer

Energy Science &Engineering, EarlyView.
Static mixers play a crucial role in the safe transport of hydrogen‐blended natural gas. Computational fluid dynamics (CFD) was employed to investigate the effects of structural parameters of the HEV static mixer on the mixing behavior and homogeneity of natural gas and hydrogen. The modeling approach was well validated against experimental data.
Xiang Zhou, Jun Zheng, Weiqing Xu, Dewen Kong, Yan Shi, Maolin Cai   +5 more
wiley   +1 more source

2D velocity-vorticity viscous incompressible flows [PDF]

, 2013
The 2D unsteady Navier-Stokes equations in its velocity-vorticity formulation, after time discretization, leads to a nonlinear elliptic system which may be solved by iterative methods; however, decoupling the nonlinear vorticity equation
Téllez, Raúl, Acevedo, Habersheel, Nicolás, Alfredo   +2 more
core   +1 more source

Monolithic Framework to Simulate Fluid‐Structure Interaction Problems Using Geometric Volume‐of‐Fluid Method

International Journal for Numerical Methods in Fluids, EarlyView.
A three‐dimensional fluid‐structure interaction (FSI) framework is developed using the geometric volume‐of‐fluid (VOF) interface capturing method and applied to assess largescale turbulent FSI interactions. The monolithic FSI framework is extensively validated, and despite the discontinuities across the interface, the FSI framework delivers stable and ...
Soham Prajapati, Ali Fakhreddine, Krishnan Mahesh   +2 more
wiley   +1 more source

The Relation Between Two Types of Frequent Wave Breaking Over Southeastern Siberia and Different Conditions of Unseasonable Midsummer Weather Over Japan

International Journal of Climatology, EarlyView.
To analyze the different morphologies of Rossby wave breaking over Eastern Siberia and their relationships with the anomalous patterns of temperature and precipitation that cause unseasonable midsummer weather conditions over Japan, we performed regression analyses against the interannual variabilities of the anticyclonic and cyclonic Rossby wave ...
Kazuto Takemura
wiley   +1 more source

A velocity-vorticity-pressure formulation for the steady Navier–Stokes–Brinkman–Forchheimer problem

Computer Methods in Applied Mechanics and Engineering
The flow of incompressible fluid in highly permeable porous media in vorticity - velocity - Bernoulli pressure form leads to a double saddle-point problem in the Navier--Stokes--Brinkman--Forchheimer equations. The paper establishes, for small sources, the existence of solutions on the continuous and discrete level of lowest-order piecewise divergence ...
Santiago Badia, Carsten Carstensen, Alberto F. Martín, Ricardo Ruiz-Baier, Segundo Villa-Fuentes   +4 more
openaire   +2 more sources

Tracking Summer Greenland Blocking: The Upstream Pathway Shapes Historical Extremes and Future Change

International Journal of Climatology, EarlyView.
This study investigates summer Greenland atmospheric blocking using the Lagrangian tracking Python package blocktrack applied to ERA5 reanalysis and CMIP6 models. Two types of blocks—upstream (Northern Canada origin) and retrograding (Northern Atlantic origin)—are distinguished, with upstream blocks driving recent observed frequency increasing trends ...
Michele Filippucci, Jacob Maddison, Simona Bordoni   +2 more
wiley   +1 more source

Numerical Analysis of Flow Around Bluff Bodies with 4th and 2nd order compact formulations

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
In the present study, fourth-order compactformulation has been improved for Navier-Stokes (N-S) equations, which isexpressed for two-dimensional, steady, incompressible flow problems.
Hasan Rıza Güven, İlyas Kandemir, İlker İnan, Erman Aslan   +3 more
doaj   +1 more source

Velocity boundary conditions for vorticity formulations of the incompressible Navier-Stokes equations [PDF]

, 1995
Velocity boundary conditions for the vorticity form of the incompressible, viscous fluid momentum equations are presented. Vorticity is created on boundaries to simultaneously satisfy the tangential and normal components of the velocity boundary ...
Ingber, M. S., Kempka, S. N., Strickland, J. H., Peery, J. S., Glass, M. W.   +4 more
core   +1 more source