Results 51 to 60 of about 5,941,578 (168)
A Green's Function Wind Turbine Induction Model That Incorporates Complex Inflow Conditions
Wind Energy, Volume 27, Issue 12, Page 1526-1544, December 2024.ABSTRACT In this work, we develop a new analytical turbine induction model that can incorporate complex inflow conditions including cases where the wind velocity and temperature profiles can vary as functions of height. This induction model is derived from the linearized Navier–Stokes and leads to a second‐order ODE that can be solved using a Green's ...
Lawrence Cheung +6 more
wiley +1 more source
Energy Science &Engineering, Volume 12, Issue 10, Page 4394-4413, October 2024.This study develops a method of identifying vortices in the impeller channel of the multiphase pump, and reveals the intrinsic connection between the vortices and pressure fluctuations in the main flow passage. These findings offer some suggestions for eliminating the influence of vortices and enhancing the pressurizing capabilities of multiphase pumps.
Guangtai Shi +4 more
wiley +1 more source
Calibration of a hybrid sea ice model during an expedition to the Arctic
Proceedings in Applied Mathematics and Mechanics, Volume 24, Issue 3, October 2024.Abstract We describe the acquisition and evaluation of data during the ArcWatch II expedition into the Arctic Ocean on board of the icebreaker Polarstern. The data is used to calibrate a hybrid sea ice model that focuses on modeling the marginal ice zone, which is the transition zone between pack ice and the open ocean.
Carolin Mehlmann, Thomas Richter
wiley +1 more source
Two‐phase magma flow with phase exchange: Part II. 1.5D numerical simulations of a volcanic conduit
Studies in Applied Mathematics, Volume 153, Issue 3, October 2024.Abstract In a review paper in this same volume, we present the state of the art on modeling of compressible viscous flows ranging from single‐phase to two‐phase systems. It focuses on mathematical properties related to weak stability because they are important for numerical resolution and on the homogenization process that leads from a microscopic ...
Alain Burgisser +3 more
wiley +1 more source
Urban wind field prediction based on sparse sensors and physics‐informed graph‐assisted auto‐encoder
Computer-Aided Civil and Infrastructure Engineering, Volume 39, Issue 10, Page 1409-1430, 15 May 2024.Abstract The urban flow wind field is a critical element for downstream research, such as mitigation of urban wind disasters, assessment of urban wind environment, and urban drone route planning. However, it is impractical to arrange a large number of sensors to monitor an urban wind flow field.
Huanxiang Gao +6 more
wiley +1 more source
Simulating the Unsteady Stable Boundary Layer With a Stochastic Stability Equation
Journal of Geophysical Research: Atmospheres, Volume 129, Issue 5, 16 March 2024.Abstract Turbulence in very stable boundary layers is typically unsteady and intermittent. The study implements a stochastic modeling approach to represent unsteady mixing possibly associated with intermittency of turbulence and with unresolved fluid motions such as dirty waves or drainage flows.
Vyacheslav Boyko, Nikki Vercauteren
wiley +1 more source
Journal of Engineering, Volume 2024, Issue 1, 2024.Significant research efforts have been conducted by many research groups in the last decades to circumvent the acoustic metamaterial concept limitations. Principally, the lack of a reliable methodology for the design of such metamaterial‐based devices and their performance decay when they operate in a moving medium were the main topics of investigation
Giada Colombo +3 more
wiley +1 more source
An effective solution to the nonlinear, nonstationary Navier-Stokes equations for two dimensions [PDF]
, 1975 A sequence of approximate solutions for the nonlinear, nonstationary Navier-Stokes equations for a two-dimensional domain, from which explicit error estimates and rates of convergence are obtained, is described.
Gabrielsen, R. E.
core
Numerical stabilization of the Stokes problem in vorticity–velocity–pressure formulation [PDF]
, 2006 We work on a vorticity, velocity and pressure formulation of the bidimensional Stokes problem for incompressible fluids. In previous papers, the authors have developed a natural implementation of this scheme.
Salaün, Michel, Salmon, Stéphanie
core +1 more source
Navier-Stokes problem for shared memory AMGCL benchmarks
, 2018 <p>The system matrix and the right hand side used in the shared memory Navier-Stokes benchmark at https://github.com/ddemidov/amgcl_benchmarks.</p> <p>This is an incompressible Navier-Stokes problem discretized on a non uniform 3D mesh
Rossi, Riccardo +3 more
core +1 more source