Zobrazeno 1 - 10
of 142
pro vyhledávání: '"King, Peter R."'
Deflection of stray asteroids by low-momentum impacts is an Earth's key defense strategy. Using a proof-of-principle numerical model, we show that even such impacts on rubble pile asteroids (RPAs) may lead to fragmentation because of inherent interna
Externí odkaz:
http://arxiv.org/abs/2402.16723
Publikováno v:
Advances in Water Resources 2021 104096
Determining the effective permeability (keff) of geological formations has broad applications to site remediation, aquifer discharge or recharge, hydrocarbon production, and enhanced oil recovery. The objectives of this study are: (1) to explore an a
Externí odkaz:
http://arxiv.org/abs/2109.13708
The path integral for Darcy's law with a stochastic conductivity, which characterizes flow through random porous media, is used as a basis for Wilson renormalization-group (RG) calculations in momentum space. A coarse graining procedure is implemente
Externí odkaz:
http://arxiv.org/abs/1911.11218
The pressure and flow statistics of Darcy flow through a random permeable medium are expressed in a form suitable for evaluation by the method of simulated annealing. There are several attractive aspects to using simulated annealing: (i) any probabil
Externí odkaz:
http://arxiv.org/abs/1903.10439
Publikováno v:
Eur. J. Phys. 41 (2020) 055401 (19pp)
The Markov chain Monte Carlo (MCMC) method is used to evaluate the imaginary-time path integral of a quantum oscillator with a potential that includes both a quadratic term and a quartic term whose coupling is varied by several orders of magnitude. T
Externí odkaz:
http://arxiv.org/abs/1811.04669
The path integral for classical statistical dynamics is used to determine the properties of one-dimensional Darcy flow through a porous medium with a correlated stochastic permeability for several spatial correlation lengths. Pressure statistics are
Externí odkaz:
http://arxiv.org/abs/1811.01781
Publikováno v:
Phys. Rev. E 97, 042119 (2018)
We present a path integral formulation of Darcy's equation in one dimension with random permeability described by a correlated multi-variate lognormal distribution. This path integral is evaluated with the Markov chain Monte Carlo method to obtain pr
Externí odkaz:
http://arxiv.org/abs/1803.07382
Publikováno v:
In Journal of Petroleum Science and Engineering April 2022 211
Publikováno v:
American Journal of Physics, Vol. 86, Issue 4 (2018)
We give an introduction to the calculation of path integrals on a lattice, with the quantum harmonic oscillator as an example. In addition to providing an explicit computational setup and corresponding pseudocode, we pay particular attention to the e
Externí odkaz:
http://arxiv.org/abs/1712.08508
Publikováno v:
In Journal of Petroleum Science and Engineering January 2022 208 Part C