Results 81 to 90 of about 5,659 (165)
URANS prediction of roll damping for a ship hull section at shallow draft
, 2016 It is analytically difficult to calculate roll damping of ships due to the effects of viscosity. Therefore, computational fluid dynamics (CFD) has become a powerful tool in predicting roll damping recently.
KATAYAMA, Toru +3 more
core +1 more source
Engineering Applications of Computational Fluid MechanicsHydrogen direct injection involves shock-containing, under-expanded jets for which Unsteady Reynolds–Averaged Navier–Stokes (URANS) predictions of penetration and mixture preparation are difficult to attribute to turbulence closure alone, because ...
Kacper Kaczmarczyk +6 more
doaj +1 more source
Numerical Predictions of Tip Shape Effect on Helicopter Rotor Noise in Forward Flight
Havacılık ve Uzay Teknolojileri DergisiThe effect of helicopter rotor blade tip shape on overall aircraft noise level is analyzed, in forward flight conditions. The infamous HART-II experimental data is used as a base for validations.
Tuğrul Teoman Öztürk +1 more
doaj
A machine learning-based closure for unsteady RANS simulations of vortex shedding
Engineering Applications of Computational Fluid MechanicsAccurate computational fluid dynamics (CFD) simulations of complex unsteady flows, which are critical for aircraft design and certification, are often limited by uncertainties inherent in turbulence models, particularly those relying on the Boussinesq ...
A. Kawabata +3 more
doaj +1 more source
URANS and DES simulation of flow around bridge sections
, 2006 This paper deals with the numerical simulation of the flow around three different two-dimensional bluff bodies: a 1:1 square cylinder, a 1:5 rectangular cylinder and a realistic bridge section. The Unsteady Reynolds-Averaged Navier-Stokes (URANS) and the
Schewe, Günter +3 more
core
URANS and DNS of a cough-induced aerosol-laden jet flow interacting with a large-scale circulation
This study investigates the dispersion of a cough-induced particle cloud in the presence of a large-scale circulation (LSC) predicted in an unsteady Reynolds-averaged Navier-Stokes simulation (URANS), and compares the results with those of a direct ...
Wagner, Claus +2 more
core +1 more source
Simulation of a conventionally neutral boundary layer with two-equation URANS [PDF]
Simulating conventionally neutral boundary layers (CNBLs) with the unsteady Reynolds-Averaged Navier-Stokes (URANS) technique is investigated in this paper using a modified two-equation linear eddy viscosity turbulence model.
Van Der Laan, M. P. +7 more
core +1 more source
Urans and Les Cfd Simulations of Swirl Stabilized Non-Premixed Tecflam Combustor
, 2015 Simulating a gas turbine combustor is a challenging issue due to complexity of both flow and reaction kinetics. URANS, Unsteady RANS, is an interesting approach for simulating transient reacting flows in combustors.
Uslu, S., Solmaz, M. B.
core
Numerical Computations of Turbulent Swirling Reacting Flows Using URANS and LES
, 2009 Numerical studies of turbulent swirling reacting flows are performed using unsteady Reynolds-averaged Navier-Stokes (URANS) and large-eddy simulation (LES).
Ilie, Marcel, Marcel Ilie
core +1 more source
Affordable and Accurate Numerical Predictions of Helicopter Rotor Noise inForward Flight
Havacılık ve Uzay Teknolojileri DergisiIn the present work, a numerical methodology is developed for affordable and accurate analysis of helicopter rotor noise in forward flight. The flow field is obtained using unsteady compressible flow analyses using commercially available
Tuğrul Teoman Öztürk +1 more
doaj