Results 71 to 80 of about 6,869 (224)
A numerical study on aerodynamic resonance in transonic separated flow [PDF]
, 2009 An ongoing numerical investigation of unsteady shock/boundary layer interaction on a 2-d supercritical airfoil in transonic flow is presented. Initially, the finitevolume URANS solver DLR-TAU is used to simulate self-sustained periodic shock oscillations
Nitzsche, Jens
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Numerical aeroacoustic analysis of propeller designs [PDF]
, 2018 As propeller-driven aircraft are the best choice for short/middle-haul flights but their acoustic emissions may require improvements to comply with future noise certification standards, this work aims to numerically evaluate the acoustics of different ...
Barakos, George N. +2 more
core +1 more source
International Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.In numerical virtual flight (NVF) tasks, strong unsteady flow disturbances can change aerodynamic behavior and reduce the effectiveness of control surfaces, increase the difficulty of aerodynamics modeling and controlling at high‐angle‐of‐attack (high‐AoA).
Dongyu Zhao +5 more
wiley +1 more source
Numerical and Experimental Analysis of Transient Flow in Roots Blower [PDF]
, 2018 The performance of rotary positive displacement machines highly depends on the operational clearances. It is widely believed that computational fluid dynamics (CFD) can help understanding internal leakage flows.
Bruecker, C. +5 more
core +1 more source
Energies, 2020 Close-packed contra-rotating vertical-axis turbines have potential advantages in wind and hydrokinetic power generation. This paper describes the development of a numerical model of a vertical axis turbine with a torque-controlled system using an ...
Ruiwen Zhao +4 more
doaj +1 more source
International Journal of Rotating Machinery, Volume 2026, Issue 1, 2026.This work presents and validates a direct analytical methodology for the parametric hydrodynamic design of Pelton rotors. The proposed approach combines a one‐dimensional theoretical framework for defining global geometric rotor parameters with an inductive method for generating bucket geometry, formalized from a comprehensive mapping of a high ...
Daniel O. Silva +4 more
wiley +1 more source
Improved Unsteady RANS Models Applied to Jet Transverse to a Pipe Flow [PDF]
, 2013 An unsteady RANS model is developed in order to simulate the complex situations involving both free and bounded flows. This model tuned to catch coherent flow structures is developed both in the k-ε and k-l approaches. The full 3D geometry of a round jet
A Kourta +16 more
core +3 more sources
Improved version of LeMoS hybrid model for ambiguous grid densities
International Journal of Naval Architecture and Ocean Engineering, 2018 Application of the LeMoS hybrid (LH) URANS/LES method for the wake parameters prediction is considered. The wake fraction coefficient is calculated for inland ship model M1926 under shallow water conditions and compared to results of PIV measurements. It
I. Shevchuk, N. Kornev
doaj +1 more source
Energy Science &Engineering, Volume 13, Issue 12, Page 6003-6016, December 2025.ABSTRACT Vertical axis wind turbine (VAWT) is a suitable renewable power generation tool for use in urban areas, especially at low wind speeds and with low noise level. However, an approach with accurate results, acceptable time consumption, and cost for optimizing this turbine is not reported in the literature.
Sepehr Sanaye +2 more
wiley +1 more source
CFD simulation of flow past MAV wings [PDF]
, 2011 Turbulent flow past low aspect ratio (AR) thin wing used for two different MAV (Micro Air Vehicles) configurations viz. Black Kite and Golden Hawk has been carried out in order to analyze their aerodynamic characteristics.
Kulkarni, DS +3 more
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