Results 31 to 40 of about 5,073 (168)

Sensitivity And Out-Of-Sample Error in Continuous Time Data Assimilation

, 2011
Data assimilation refers to the problem of finding trajectories of a prescribed dynamical model in such a way that the output of the model (usually some function of the model states) follows a given time series of observations.
Apte, Boccaletti, Bröcker, Cardinali, Courtier, Derber, Hastie, Jazwinsky, Judd, Kierzenka, Le Dimet, Liu, Liu, Lorenz, Lorenz, Nijmeirer, Parlitz, Pereyra, Sage, Seaman, Szendro, Zeitouni, Åström   +22 more
core   +1 more source

Nonlinear resonant tunneling of Bose-Einstein condensates in tilted optical lattices [PDF]

, 2010
We study the tunneling decay of a Bose-Einstein condensate out of tilted optical lattices within the mean-field approximation. We introduce a novel method to calculate also excited resonance eigenstates of the Gross-Pitaevskii equation, based on a grid ...
C. Elsen, C. J. Pethick, D. Witthaut, H. J. Korsch, K. Rapedius, S. Wimberger   +5 more
core   +1 more source

Theory of voltammetry in charged porous media

, 2018
We couple the Leaky Membrane Model, which describes the diffusion and electromigration of ions in a homogenized porous medium of fixed background charge, with Butler-Volmer reaction kinetics for flat electrodes separated by such a medium in a simple ...
Bazant, Martin Z., Khoo, Edwin
core   +1 more source

Viscous dissipative ternary nanoparticles on heat transfer enhancement in MHD flow over a stretching surface

International Journal of Thermofluids
A barrier that researchers and scientists are currently trying to overcome is the low thermal conductivity that occurs during heat transmission procedures. As a result, researchers are taking steps to improve the base fluid thermal conductivity by mixing
Talha Anwar, Syed Arshad Abas, Mehreen Fiza, Hakeem Ullah, Seham M. Al-Mekhlafi   +4 more
doaj   +1 more source

Numerical study of a multiscale expansion of KdV and Camassa-Holm equation

, 2007
We study numerically solutions to the Korteweg-de Vries and Camassa-Holm equation close to the breakup of the corresponding solution to the dispersionless equation.
Grava, T., Klein, C.
core   +1 more source

Comparative analysis of penta-hybrid and ternary hybrid nanofluids in a rotating porous stretchable channel with mhd and thermal radiation effects

International Journal of Thermofluids
This work examines the ternary hybrid nanofluid and the penta hybrid nanofluid flow in a porous and stretchable rotating channel with the dual effects of magnetic fields, thermal radiation, chemical reactions, and internal heat generation.
Mehdi Mahboobtosi, Alireza Domiri Ganji, Shabnam Shahri, Fateme Nadalinia Chari, Davood Domiri Ganji   +4 more
doaj   +1 more source

Significance of magnetic field and chemical reaction on the natural convective flow of hybrid nanofluid by a sphere with viscous dissipation: A statistical approach

Nonlinear Engineering, 2022
Hybrid nanofluid, which is a combination of Propylene Glycol (PG) – Water (H2O) admixture and paraffin wax and sand, may be utilized as a standby for PG and (H2O) blend in solar thermal framework.
Venkateswarlu Avula, Suneetha Sangapatnam, Babu Macherla Jayachandra, Kumar Jorige Girish, Raju Chakravarthula Siva Krishnam, Al-Mdallal Qasem   +5 more
doaj   +1 more source

Two-phase nanofluid over rotating disk with exponential variable thickness [PDF]

, 2019
Purpose: The purpose of this paper is to investigate the effect of nanofluid over rotating disk with the exponential variable thickness (Formula presented.) (c > 0, b > 0) and to analyze Brownian motion and thermophoresis of Buongiorno model on the
Ding, Yiming, Li, Ruilin, Lin, Ping, Liu, Chunyan, Zheng, Liancun   +4 more
core   +2 more sources

Impact of Cattaneo–Christov Heat and Mass Flux on MHD Hybrid Nanofluid Flow Over an Extending Surface With Convective and Mass Flux Effects

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigates the flow of a magnetized hybrid nanofluid over a permeable stretching surface. The mass and thermal transport within the system is regulated using the Cattaneo–Christov flux theory. The fluid is additionally subjected to thermophoresis, chemical reaction, Brownian motion, and activation energy effects.
Ebrahem A. Algehyne, Abdul Bariq, Mounirah Areshi, Fahad Maqbul Alamrani, Zehba Raizah, Izharul Haq, Anwar Saeed   +6 more
wiley   +1 more source

Non-similar analysis of bioconvection MHD micropolar nanofluid on a stretching sheet with the influences of Soret and Dufour effects

Applied Water Science
In this study, we investigate the capabilities of magnetohydrodynamic bioconvective micropolar nanofluids, considering the impact of Soret and Dufour effects using a non-similarity analysis. Our objective is to forecast the complex heat and mass transfer
Umar Farooq, Tao Liu, Umer Farooq, Samina Majeed   +3 more
doaj   +1 more source