Results 211 to 220 of about 366,321 (288)

Advection‐Pressure Splitting Schemes Applied to a Non‐Conservative 1D Blood Flow Model With Transport for Arteries and Veins

International Journal for Numerical Methods in Fluids, EarlyView.
We introduce new efficient and accurate first order finite volume‐type numerical schemes, for the non‐conservative one‐dimensional blood flow equations with transport, taking into account different velocity profiles. The framework is the flux‐vector splitting approach of Toro and Vázquez‐Cendón (2012), that splits the system in two subsystems of PDEs ...
Alessandra Spilimbergo, Eleuterio F. Toro, Annunziato Siviglia, Lucas O. Müller   +3 more
wiley   +1 more source

Exploring the global prevalence of mood and anxiety disorders in LGBTIQ+ people: A systematic review. [PDF]

Front Psychiatry
Johnson S, Bogdanova M, Alexander L, Stokes PRA.   +3 more
europepmc   +1 more source

EVSS‐Based Simulation Techniques for the Viscoelastic Fluids With Pure Polymer Melts Using Three‐Field Approach

International Journal for Numerical Methods in Fluids, EarlyView.
This paper presents a finite element method for simulating highly viscoelastic flows of pure polymer melts using the Elastic Viscous Stress Splitting formulation. The method avoids higher‐order derivatives in the weak formulation by reformulating the convective term in the constitutive equation.
R. Ahmad, P. Zajac, S. Turek
wiley   +1 more source

Monocular complex amplitude imaging via a polarization-multiplexed liquid-crystal-lens-informed Fourier neural network. [PDF]

Natl Sci Rev
Li L, Liao M, Zhang Y, Zeng Z, Wang S, Jia W, Zhang J, Zhang B, Dong Y, Zhang D, Zhang F, Yang Y.   +11 more
europepmc   +1 more source

Impact of Uncertain Parameters on Navier–Stokes Equations With Heat Transfer via Polynomial Chaos Expansion

International Journal for Numerical Methods in Fluids, EarlyView.
This study investigates the impact of uncertain parameters on Navier–Stokes equations coupled with heat transfer using the Intrusive Polynomial Chaos Method (IPCM). Sensitivity equations are formulated for key input parameters, such as viscosity and thermal diffusivity, and solved numerically using the Finite Element‐Volume method.
N. Nouaime, B. Després, M. A. Puscas, C. Fiorini   +3 more
wiley   +1 more source

Novel modality using computational fluid dynamics to estimate renal pelvic pressure and evaluate severity of obstruction in congenital hydronephrosis. [PDF]

Front Urol
Nishimura K, Imada S, Sugihara N, Fukumoto T, Miura N, Miyauchi Y, Kikugawa T, Nakamura M, Saika T.   +8 more
europepmc   +1 more source

Polymer Stress‐Tensor Calculation for a Laminar Submerged Viscoelastic Jet Flow Using Different Constitutive Models

International Journal for Numerical Methods in Fluids, EarlyView.
This study presents an efficient method to compute polymer stress‐tensor components in viscoelastic laminar jet flows using models such as Oldroyd‐B, Giesekus, PTT, and FENE. By assuming a stationary and parallel flow, the methodology significantly reduces computational cost.
Rafael de Lima Sterza, Leandro Franco de Souza, Marcio Teixeira de Mendonca, Analice Costacurta Brandi   +3 more
wiley   +1 more source

Acoustofluidic spin control for 3D particle manipulation in droplets. [PDF]

Sci Adv
Chen C, Gu Y, Rufo J, Zhang J, Yang K, Chen Y, Lee LP, Huang TJ.   +7 more
europepmc   +1 more source

Coupled Clustering in Hierarchical Matrices for the Oseen Problem

International Journal for Numerical Methods in Fluids, EarlyView.
Fluid flow problems can be modelled by the Navier‐Stokes or, after linearization, by the Oseen equations. Their discretization results in linear systems in saddle point form which are typically very large and need to be solved iteratively. We propose a novel block structure for hierarchical matrices which is then used to build preconditioners for the ...
Jonas Grams, Sabine Le Borne
wiley   +1 more source

Evaluating the accuracy of one-dimensional glottal flow model in predicting voice production: comparison to experiments and three-dimensional flow simulations. [PDF]

Phys Fluids (1994)
Yoshinaga T, Zhang Z.
europepmc   +1 more source