Results 271 to 280 of about 21,669,444 (330)
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Dumbbell model for the classical radiation reaction
American Journal of Physics, 1978In his treatise on electron theory, Lorentz showed that the classical radiation reaction is attributable to the breakdown of Newton’s Third Law within the structure of an accelerating charge. But Lorentz’s calculation, based on a spherical model, is so difficult as to obscure the underlying physical principle, and requires that the charge be ...
David J. Griffiths, Ellen W. Szeto
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Synthesis and Characterization of Model Dumbbell Polymers
Macromolecules, 2007High mol. wt. dumbbell shaped polymers were prepd. by atom transfer radical polymn. (ATRP) to grow branches from repeat units of end blocks of a sym. triblock copolymer. The triblock copolymer itself was prepd. by polymer-polymer coupling of a com.
Rajan, M +8 more
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Well-Posedness for the Dumbbell Model of Polymeric Fluids
Communications in Mathematical Physics, 2004Denote by \(u\) and \(p\) the velocity and pressure of the fluid, and \(Q\) the configuration of the spring, and hence the dumbbell, then \(Q\) obeys the following equation: \[ {\partial Q\over\partial t}+ (u\cdot\nabla) Q- (\nabla u)^TQ= -F(Q)+\dot w(t),\tag{1} \] where \(\dot w(t)\) is Gaussian white noise in time.
E, Weinan, Li, Tiejun, Zhang, Pingwen
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Two-dimensional hard dumbbells. I. Fluctuating cell model
The Journal of Chemical Physics, 2000We apply the fluctuating cell model to the calculation of free energies and pressures of high density phases of two-dimensional hard dumbbells using the Metropolis algorithm to generate configurations in the NVT ensemble. The natural logarithm of the average free volume is found to yield a better approximation of the free energy of the system than the ...
Shawn C. Gay +2 more
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Journal of Applied Physics
Magnetic structure factor (MSF), calculated from ground state configuration previously obtained by Monte Carlo simulation in different rectangular artificial spin ices, is employed to investigate ground state degeneracy.
F. S. Nascimento +5 more
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Magnetic structure factor (MSF), calculated from ground state configuration previously obtained by Monte Carlo simulation in different rectangular artificial spin ices, is employed to investigate ground state degeneracy.
F. S. Nascimento +5 more
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Nonlinear dumbbell model for flexible polymers: dynamical phenomena
Journal of Non-Newtonian Fluid Mechanics, 1987Abstract We study the stress growth upon the inception of steady shear and steady elongational flow for a nonlinear dumbbell model for flexible macromolecules suspended in a Newtonian fluid. The internal force law is made nonlinear by adding a cubic term to the Hookean force law.
P. Biller +3 more
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Swimming of an inertial squirmer and squirmer dumbbell through a viscoelastic fluid
Journal of Fluid Mechanics, 2023We investigate the hydrodynamics of a spherical and dumbbell-shaped swimmer in a viscoelastic fluid, modelled by the Giesekus constitutive equation. The ‘squirmer’, a model of a micro-swimmer with tangential surface waves at its boundaries, is simulated ...
Zhenyu Ouyang +4 more
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A detailed comparison of various FENE dumbbell models
Journal of Non-Newtonian Fluid Mechanics, 1997Abstract The rheological behaviour of dilute solutions of finitely extensible non-linear elastic (FENE) dumbbells in both steady state and transient shear and simple elongational flow is investigated. Three dumbbell models are compared: the original FENE model with the Warner spring force, which is treated by brownian dynamics simulations, and the ...
Markus Herrchen +1 more
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MODEL LATIHAN BEBAN BERBASIS DUMBBELL UNTUK MAHASISWA [PDF]
, 2021 Latihan beban sering digambarkan sebagai aktivitas yang dapat dilakukan hanya dengan berkunjung ke tempat tertentu seperti pusat kebugaran, klab kesehatan dan sebagainya. Padahal, dengan memanfaatkan berbagai alat dan media yang ada, mahasiswa tetap bisa melakukan aktivitas latihan beban dimana dan kapan saja, termasuk di rumah masing-masing. Dalam
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Internal viscosity dumbbell model with a Gaussian approximation
Journal of Rheology, 1993A noninertial Hookean dumbbell with internal viscosity (or internal friction) is studied in transient and steady shear flows by use of a Gaussian closure on the second moment equation of the configuration of the dumbbell. The model predicts shear thinning for the viscosity and first normal stress coefficients for all values of the relative internal ...
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