Results 81 to 90 of about 4,435 (226)

Experimental Factors and Techniques for Pool Boiling Heat Transfer Enhancement: A Critical Review

Heat Transfer, EarlyView.
ABSTRACT This review presents a comprehensive assessment of active strategies for enhancing pool boiling heat transfer, with a focus on techniques that do not rely solely on the boiling surface modification. It examines a broad range of methodologies including fluid additives, external fields, mechanical interventions, and thermal‐geometric tuning that
José E. Pereira, R. R. Souza, A. S. Moita   +2 more
wiley   +1 more source

Unsteady fluid forces induced by potential flow interactions between turbine stator and rotor.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1984
定常じょう乱を有限量,非定常じょう乱を微小量とし,静・動翼面上の定常及び非定常束縛うず分布により非定常ポテンシャル流れを記述した.翼面上の接線流れの条件から導かれる束縛うずを決める連立積分方程式を解くために,若干の近似が導入された.得られた非定常流体力は,静・動翼の間隔,翼厚,ピッチ比及び速度比などとの関連において,既存の数値解と比較吟味され,ハーモニクス成分ごとに本解析結果の信頼性が確認されている.
Tetsuo NISHIYAMA, Mikio SASAKI
openaire   +2 more sources

New Drain Spacing Formulas Using the Variational Iteration Method

Irrigation and Drainage, EarlyView.
ABSTRACT In this study, the drain spacing is computed using the variational iteration method (VIM) to the linearized Boussinesq equation. By applying at most two iterations of the VIM method under three different initial condition scenarios, three equations for drain spacing calculation were derived. These equations predict values of drain spacing that
George Kargas, Leonidas Mindrinos, Paraskevi Londra   +2 more
wiley   +1 more source

Optimal design of a pipe isolation plugging tool using a computational fluid dynamics simulation with response surface methodology and a modified genetic algorithm

Advances in Mechanical Engineering, 2017
In this work, the flow effects on an isolation plugging tool in a pipeline were numerically investigated using computational fluid dynamics. The study focused on optimal parameter design for the isolation plugging tool, which reduced the unsteady force ...
Hong Zhao, Hao-Ran Hu
doaj   +1 more source

Voice and Speech in Atypical Parkinsonian Disorders

Movement Disorders Clinical Practice, EarlyView.
Background Motor speech disorders are early, common, and functionally limiting features of atypical parkinsonian disorders (APDs) such as progressive supranuclear palsy (PSP), corticobasal syndrome (CBS), and multiple system atrophy (MSA). These impairments are underrecognized and undertreated in neurology clinics.
Federico Rodriguez‐Porcel, Farwa Ali, Michiko Bruno, Heather Davis Cuevas, Rohit Dhall, Kylie Dunne‐Platero, Lawrence I. Golbe, Ihtsham Haq, Nicole Herndon, Lawrence S. Honig, Kyurim Kang, Sarah Kremen, Guillaume Lamotte, Nikolaus R. McFarland, Michela Mir, Leila Montaser‐Kouhsari, Alexander Pantelyat, Joel Page, Hylan Pickett, Laura Purcell Verdun, Kelly Richardson, Jessica Shurer, Michelle Troche, Rene L. Utianski, Katya Villarreal‐Cavazos, Tuhin Virmani, Anne‐Marie Wills, as the Diagnosis and Treatment Working Group, CurePSP Center of Care (CoC) Network, Farwa Ali, Michiko Bruno, Timothy Chang, Rohit Dhall, Kimiko Domoto‐Reilly, Lawrence I. Golbe, Ihtsham Haq, Lawrence S. Honig, Sarah Kremen, Guillaume Lamotte, Zoltan Mari, Nikolaus R. McFarland, Leila Montaser‐Kouhsari, Alexander Pantelyat, Federico Rodriguez‐Porcel, Junaid Siddiqui, Jessica Shurer, Christopher Spears, Tuhin Virmani, Anne‐Marie Wills   +48 more
wiley   +1 more source

Numerical investigation on heat and mass transfer effect of micropolar fluid over a stretching sheet through porous media

Alexandria Engineering Journal, 2015
The present paper deals with the study of unsteady heat and mass transfer characteristics of a viscous incompressible electrically conducting micropolar fluid.
B. Mohanty, S.R. Mishra, H.B. Pattanayak
doaj   +1 more source

The Combined Effects of Variable Viscosity and Thermal Conductivity of An Unsteady Casson Fluid Flow Along a Vertical Porous Channel With Convective Cooling Walls, Using the Bivariate Spectral Local Linearization Method

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This study examines the combined impact of different thermal conductivity and viscosity on unsteady non‐Newtonian Casson fluid flow of incompressible, electrical conductivity in a porous vertical channel with convective cooling walls, uniform magnetic field, and constant pressure gradient.
A. S. Adeyemo, Precious Sibanda, S. P. Goqo   +2 more
wiley   +1 more source

Free Surface Waves in Electrohydrodynamics With a Prescribed Vorticity Distribution

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Traditionally, the study of free surface flows assumed irrotationality to simplify matters, and the results seemed to have great success, notably with the Korteweg‐de Vries(KdV) equation. In the past decade, there have been attempts to remove this seemingly strong condition and replace it with a global constant vorticity equivalent to a linear
M. J. Hunt, Denys Dutykh
wiley   +1 more source

Quantifying the Effects of Spatial Inhomogeneity in an Autoclave LDPE Reactor Using CFD

Macromolecular Reaction Engineering, EarlyView.
A CFD simulation incorporating rigorous polymerization chemistry into a plant‐scale sliding mesh reactor with multiple PID controllers revealed axial flow patterns that segment the reactor into smaller compartments with different properties. More evident differences exist between the mixture within the agitator shaft swept volume and that outside of ...
Elijah Yoder, Wayne Strasser
wiley   +1 more source

Numerical Insights Into the Resistance Reduction Mechanisms of Forward Tapered Transoms in High‐Speed Catamaran: A Computational Fluid Dynamics‐Based Study

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study investigates the hydrodynamic influence of forward transom tapering on a displacement catamaran hull using computational fluid dynamics (CFD) simulations. Five taper configurations ranging from a vertical transom base design to a fully tapered stern (1.00B) were evaluated over a wide Froude number range (Fr = .3 to 1.0).
Chalermkiat Nuchturee, Chairat Napasaksri, Ramil Kesvarakul, Sarawuth Srinakaew   +3 more
wiley   +1 more source