Results 11 to 20 of about 2,473,621 (173)
Modelling interactions between waves and diffused interfaces
International Journal for Numerical Methods in Fluids, Volume 95, Issue 2, Page 215-241, February 2023., 2023 When simulating multiphase compressible flows using the diffuse‐interface methods, important issues arise during the interaction of waves with diffused interfaces. A solution is to use a pressure‐disequilibrium model with finite, instead of infinite, pressure‐relaxation rate.
Kevin Schmidmayer +4 more
wiley +1 more source
International Journal for Numerical Methods in Fluids, Volume 95, Issue 1, Page 107-142, January 2023., 2023 In this article, a novel mass and momentum conservative semi‐implicit finite volume scheme is developed for the coupled solution of hydrostatic shallow water flow and the movement of one or more floating rigid bodies. The coupling is achieved via a nonlinear volume function in the mass conservation equation that depends on the coordinates of the ...
Cristian Brutto, Michael Dumbser
wiley +1 more source
Construction of hybrid 1D‐0D networks for efficient and accurate blood flow simulations
International Journal for Numerical Methods in Fluids, Volume 95, Issue 2, Page 262-312, February 2023., 2023 A set of coupling equations to appropriately couple nonlinear 1D and lumped‐parameter (0D) models for blood flow in compliant vessels is defined. Then, a methodology for the high‐order numerical coupling between 1D and 0D vessels through hybrid junctions is proposed.
Beatrice Ghitti +3 more
wiley +1 more source
Mathematical modeling of the spread of the coronavirus under strict social restrictions
Mathematical Methods in the Applied Sciences, EarlyView., 2021 We formulate a simple susceptible‐infectious‐recovery (SIR) model to describe the spread of the coronavirus under strict social restrictions. The transmission rate in this model is exponentially decreasing with time. We find a formula for basic reproduction function and estimate the maximum number of daily infected individuals.
Mo'tassem Al‐arydah +3 more
wiley +1 more source
Deep Q‐learning: A robust control approach
International Journal of Robust and Nonlinear Control, Volume 33, Issue 1, Page 526-544, 10 January 2023., 2023 Abstract This work aims at constructing a bridge between robust control theory and reinforcement learning. Although, reinforcement learning has shown admirable results in complex control tasks, the agent's learning behavior is opaque. Meanwhile, system theory has several tools for analyzing and controlling dynamical systems.
Balázs Varga +2 more
wiley +1 more source
Minimizing the number of optimizations for efficient community dynamic flux balance analysis [PDF]
bioRxiv, 2020 Dynamic flux balance analysis uses a quasi-steady state assumption to calculate an organism’s metabolic activity at each time-step of a dynamic simulation, using the well-know technique of flux balance analysis.
J. Brunner, N. Chia
semanticscholar +1 more source
Anisotropic Kondo line defect and ODE/IM correspondence [PDF]
SciPost Phys. 15, 248 (2023), 2021 We study the anisotropic Kondo line defects in products of chiral $SU(2)$ WZW models. We propose an ODE/IM correspondence for the anisotropic Kondo problems by considering the four-dimensional Chern Simons theory in the trigonometric case. We verify the claim both by explicit perturbative calculations in the ultraviolet and by exact WKB analysis in the
arxiv +1 more source
Software: Practice and Experience, Volume 53, Issue 1, Page 27-52, January 2023., 2023 Abstract Ordinary differential equations can be used to describe simulation models. As such, solving these equations is an important task in the high performance computing (HPC) domain. Field programmable gate arrays (FPGAs) are a promising platform, expected to be usable as efficient accelerators for such computations.
Silas Bartel, Matthias Korch
wiley +1 more source
Investigation of Novel Piecewise Fractional Mathematical Model for COVID-19
Fractal and Fractional, 2022 The outbreak of coronavirus (COVID-19) began in Wuhan, China, and spread all around the globe. For analysis of the said outbreak, mathematical formulations are important techniques that are used for the stability and predictions of infectious diseases ...
Ibtehal Alazman, B. Alkahtani
semanticscholar +1 more source
Models of the cardiac L‐type calcium current: A quantitative review
WIREs Mechanisms of Disease, Volume 15, Issue 1, January/February 2023., 2023 We discuss 73 published models of mammalian ICaL and find differences in gating kinetics, electrochemical driving force, and sensitivity to internal calcium concentrations, leading to considerable variability in their predictions. Abstract The L‐type calcium current (ICaL) plays a critical role in cardiac electrophysiology, and models of ICaL are vital
Aditi Agrawal +7 more
wiley +1 more source