Results 51 to 60 of about 18,125 (165)

Numerical simulation study on the evolution of the temperature field and frozen wall in fractured rock mass

open access: yesDeep Underground Science and Engineering, EarlyView.
The evolution of the temperature field and frozen wall under different fracture conditions was examined by an artificial ground freezing‐based thermal‐hydraulic coupled model. It was observed that fracture inclination affects the interaction extent of freezing pipes and fracture, while phase transition extent is the dominant factor for heat transfer in
Chenyi Zhang   +9 more
wiley   +1 more source

Calculus via regularizations in Banach spaces and Kolmogorov-type path-dependent equations [PDF]

open access: yes, 2014
The paper reminds the basic ideas of stochastic calculus via regularizations in Banach spaces and its applications to the study of strict solutions of Kolmogorov path dependent equations associated with "windows" of diffusion processes.
Cosso, Andrea   +2 more
core   +3 more sources

BSDEs with terminal conditions that have bounded Malliavin derivative

open access: yes, 2013
We show existence and uniqueness of solutions to BSDEs of the form $$ Y_t = \xi + \int_t^T f(s,Y_s,Z_s)ds - \int_t^T Z_s dW_s$$ in the case where the terminal condition $\xi$ has bounded Malliavin derivative.
Cheridito, Patrick, Nam, Kihun
core   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu   +8 more
wiley   +1 more source

Unsteady Williamson nanofluid flow over a rotating cone: Effects of variable properties, thermal radiation, and chemical reactions

open access: yesInternational Journal of Thermofluids
This study investigates the unsteady flow of Williamson nanofluid over a vertically rotating cone, incorporating the effects of variable thermophysical properties, chemical reactions, and thermal radiation.
Endale Ersino Bafe   +2 more
doaj   +1 more source

Representation Formula for Viscosity Solutions to Parabolic PDEs with Sublinear Operators

open access: yes, 2019
We provide a representation formula for viscosity solutions to a class of nonlinear second order parabolic PDE problem involving sublinear operators. This is done through a dynamic programming principle derived from [8]. The formula can be seen as a nonlinear extension of the Feynman--Kac formula and is based on the backward stochastic differential ...
openaire   +2 more sources

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

open access: yesInternational 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   +3 more
wiley   +1 more source

Local Polynomial Regression and Filtering for a Versatile Mesh‐Free PDE Solver

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
A high‐order, mesh‐free finite difference method for solving differential equations is presented. Both derivative approximation and scheme stabilisation is carried out by parametric or non‐parametric local polynomial regression, making the resulting numerical method accurate, simple and versatile. Numerous numerical benchmark tests are investigated for
Alberto M. Gambaruto
wiley   +1 more source

Novel perspectives of heat transport performance during cubic stratified flow of Ca3(PO4)2−water nanofluids under magnetic effects

open access: yesResults in Engineering
The problems of preparing homogeneous liquid solutions for high-performance applications in the electrical, biological, and industrial domains are revolutionized by this research.
Abbas Khan, Hashim, Muhammad Farooq
doaj   +1 more source

On a system of partial differential equations of Monge-Kantorovich type

open access: yes, 2006
We consider a system of PDEs of Monge-Kantorovich type arising from models in granular matter theory and in electrodynamics of hard superconductors. The existence of a solution of such system (in a regular open domain $\Omega\subset\mathbb{R}^n$), whose ...
Annalisa Malusa   +18 more
core   +1 more source

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