Results 281 to 290 of about 5,312,570 (354)

Lagrange crisis and generalized variational principle for 3D unsteady flow

International journal of numerical methods for heat & fluid flow, 2019
Purpose A three-dimensional (3D) unsteady potential flow might admit a variational principle. The purpose of this paper is to adopt a semi-inverse method to search for the variational formulation from the governing equations.
Ji-Huan He
semanticscholar   +1 more source

DDES analysis of the unsteady wake flow and its evolution of a centrifugal pump

Renewable Energy, 2019
In the present paper, to investigate the unsteady wake flow and its evolution at different moments when the blade sweeps the volute tongue, numerical simulation method is applied to discuss the flow field in detail based on the DDES (Delayed Detached ...
Ning Zhang, Xiaokai Liu, Bin Xia
exaly   +2 more sources

Numerical Errors in Unsteady Flow Simulations

Journal of Verification, Validation and Uncertainty Quantification, 2019
This article discusses numerical errors in unsteady flow simulations, which may include round-off, statistical, iterative, and time and space discretization errors.
L. Eça, G. Vaz, S. Toxopeus, M. Hoekstra   +3 more
semanticscholar   +1 more source

Unsteady Flows in an Unsteady Environment

The Physics of Fluids, 1965
This theoretical study treats flows behind a shock or sound wavefront propagating into an environment which is itself allowed to be undergoing some generally unsteady (i.e., nonstationary, nonuniform, and thus nonisentropic) motion. Interest is with centrally symmetric geometries. Considerations regarding self-similarity are investigated and conditions
openaire   +1 more source

Steady and unsteady transonic flow

16th Aerospace Sciences Meeting, 1978
An investigation of the transonic flow over a circular arc airfoil was conducted to obtain basic information for turbulence modeling of shock-induced separated flows and to verify numerical computer codes which are being developed to simulate such flows. The investigation included the employment of a laser velocimeter to obtain data concerning the mean
H. L. Seegmiller, J. G. Marvin, L. L. Levy   +2 more
openaire   +1 more source

Unsteady flow due to a contracting cylinder in a nanofluid using Buongiorno’s model

International Journal of Heat and Mass Transfer, 2014
Khairy Zaimi, Anuar Ishak, Ioan Pop
exaly   +2 more sources

Haptical exploration of an unsteady flow

World Haptics 2009 - Third Joint EuroHaptics conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2009
This paper investigates a human-centered approach for the exploration of large data sets resulting from CFD (Computational Fluid Dynamics) simulations. In a VR (Virtual Reality) immersive environment we propose to couple haptic feedbacks with visual rendering.
Bob Ménélas, Mehdi Ammi, Luc Pastur, Patrick Bourdot   +3 more
openaire   +2 more sources

Static Visualization of Unsteady Flows by Flow Steadification

2020
99
Steve Wolligandt, Thomas Wilde, Christian Rössl, Holger Theisel   +3 more
openaire   +1 more source

Unsteady Flow

2009
Abstract This chapter focuses on one-dimensional flows and is concerned with changes in the downstream direction only. In general, the average downstream velocity, U, is a function of space (downstream location, X) and time, t, that is,
openaire   +1 more source

Unsteady Couette granular flows

Physics of Fluids, 1997
Unsteady Couette granular flows are investigated both theoretically and by the means of the discrete element method (DEM). Theoretical formulation of the problem is based on the kinetic theory for smooth, nearly elastic particles. The resulting boundary value problem is solved numerically for two particular types of flows: (a) transient Couette flows ...
openaire   +1 more source