The Evaluation of the Boundary Vorticity by URANS and LES Methods [PDF]
INCAS Bulletin, 2015 The role of concentrated vorticity in fluid dynamics phenomena, concerning both the vorticity creation at the boundary and the response to the flow field is not wholly understood.
Ion MALAEL +2 more
doaj +2 more sources
Modelling the helicopter rotor aerodynamics at forward flight with free wake model and URANS method
Aviation, 2020 The presented work is dedicated to the numerical study of the aerodynamic characteristics of the helicopter rotor. Two approaches to modeling of the rotor are applied: the free wake model developed by the Authors with using steady airfoil characteristics
Yuri Ignatkin +3 more
doaj +4 more sources
Comparative Study of Coaxial Main Rotor Aerodynamics in the Hover with the Usage of Two Methods of Computational Fluid Dynamics [PDF]
Journal of Aerospace Technology and Management, 2021 The paper is focused on numerical modeling of the aerodynamic characteristics of a full-scale coaxial main rotor in hover. The simulation was performed using two approaches of computational fluid dynamics (CFD): the original free wake model (FWM ...
Sergey Gennadievich Konstantinov +3 more
doaj +3 more sources
Comparative Study of Coaxial Main Rotor Aerodynamics at Forward Flight Based on Free Wake Model and Unsteady ReynoldsAveraged Navier–Stokes Method [PDF]
Journal of Aerospace Technology and Management, 2022 This paper is dedicated to the numerical modeling of the aerodynamic characteristics of the full-scale coaxial main rotor. The modes of forward flight in the range of values V = 30−60 m∙s–1 (108−216 km∙h–1) have been under consideration.
Sergey Gennadievich Konstantinov +4 more
doaj +3 more sources
CFD modelling of a pulsed jet formed during an idealized isolated cough [PDF]
E3S Web of Conferences, 2022 The current contribution presents the results of calculations of a pulsed jet formation during a single cough based on the recent test by Fabregat et al. (2021) where the DNS of an idealized isolated cough was performed.
Zasimova Marina +2 more
doaj +1 more source
On the laminar–turbulent transition mechanism on megawatt wind turbine blades operating in atmospheric flow [PDF]
Wind Energy Science, 2023 Among a few field experiments on wind turbines for analyzing laminar–turbulent boundary layer transition, the results obtained from the DAN-AERO and aerodynamic glove projects provide significant findings.
B. A. Lobo +5 more
doaj +1 more source
An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body
International Journal of Automotive Science and Technology, 2021 The reduction of energy consumption of cars is always a significant issue in automotive design. Turbulent flow around a car body is very difficult to simulate accurately due to the complexity of the flow conditions around the body, such as complex flow ...
Sultan Sadykov +4 more
doaj +1 more source
Aerospace, 2023 A zonal detached eddy simulation (ZDES) method, based on the two-equation k-ω SST turbulence model, was employed to predict stall characteristics and capture small-scale vortex structures in the wake region of the main wing under the post-stall condition
Xin Zhang, Heng Zhang, Jie Li
doaj +1 more source
Hybridization of multi-objective deterministic particle swarm with derivative-free local searches [PDF]
, 2020 The paper presents a multi-objective derivative-free and deterministic global/local hybrid algorithm for the efficient and effective solution of simulation-based design optimization (SBDO) problems.
Diez, M. +5 more
core +2 more sources
Numerical Study on the Waterjet–Hull Interaction of a Free-Running Catamaran
Journal of Marine Science and Engineering, 2023 Waterjet–hull interaction is the hot point and research focus in the research of waterjet-propelled crafts. This paper presents numerical studies on the interaction between a waterjet system and a catamaran.
Yanlin Zou +4 more
doaj +1 more source