Uncertainty Quantification of a Wind Tunnel-Informed Stochastic Wind Load Model for Wind Engineering Applications [PDF]
arXiv, 2023 The simulation of stochastic wind loads is necessary for many applications in wind engineering. The proper orthogonal decomposition (POD)-based spectral representation method is a popular approach used for this purpose due to its computational efficiency.
arxiv
A Massive Star is Born: How Feedback from Stellar Winds, Radiation Pressure, and Collimated Outflows Limits Accretion onto Massive Stars [PDF]
, 2022 Massive protostars attain high luminosities as they are actively accreting and the radiation pressure exerted on the gas in the star's atmosphere may launch isotropic high-velocity winds. These winds will collide with the surrounding gas producing shock-heated ($T\sim 10^7$ K) tenuous gas that adiabatically expands and pushes on the dense gas that may ...
arxiv +1 more source
SHAPE OPTIMIZATION OF SUPERSONIC WIND TUNNEL DIFFUSER USING GENETIC ALGORITHM [PDF]
مجله مدل سازی در مهندسی, 2012 Wind tunnel, as an experimental laboratory, has many applications nowadays. Installation of wind tunnel is very expensive, so designers try to reduce wind tunnelâs installation and test costs by optimizing the design of various components of the wind ...
مرتضی Javadpour +2 more
doaj +1 more source
Supersonic and transonic Mach probe for calibration control in the Trisonic Wind Tunnel [PDF]
INCAS Bulletin, 2017 A supersonic and high speed transonic Pitot Prandtl is described as it can be implemented in the Trisonic Wind Tunnel for calibration and verification of Mach number precision. A new calculation method for arbitrary precision Mach numbers is proposed and
Alexandru Marius PANAIT
doaj +1 more source
Design of a Freely Rotating Wind Tunnel Test Bench for Measurements of Dynamic Coefficients [PDF]
56th 3AF International Conference on Applied Aerodynamics,
Association A{\'e}ronautique et Astronautique de France (3AF), Mar 2022,
Toulouse, France, 2023 The needs to improve performances of artillery projectiles require accurate aerodynamic investigation methods. The aerodynamic design of a projectile usually starts from numerical analyses, mostly including semiempirical methods and/or Computational Fluid Dynamics (CFD), up to experimental techniques composed of wind-tunnel measurements or free-flight ...
arxiv
A New Algorithm on Automatic Trimming for Helicopter Rotor Aerodynamic Loads
Aerospace, 2023 In order to simulate the flight state of the helicopter effectively, it is necessary to trim the helicopter during the forward flight in a wind tunnel test.
Xinfan Yin +5 more
doaj +1 more source
Buildings, 2022 One of the key issues in architectural design and regional planning is to create a safe and comfortable outdoor building environment, which calls for more studies.
Xiaojun Ma +3 more
doaj +1 more source
Data-driven repetitive control: Wind tunnel experiments under turbulent conditions [PDF]
Frederik, J., Kr\"oger, L., G\"ulker, G., & van Wingerden, J. W.
(2018). Data-driven repetitive control: Wind tunnel experiments under
turbulent conditions. Control Engineering Practice, 80, 105-115, 2018 A commonly applied method to reduce the cost of wind energy, is alleviating the periodic loads on turbine blades using Individual Pitch Control (IPC). In this paper, a data-driven IPC methodology called Subspace Predictive Repetitive Control (SPRC) is employed. The effectiveness of SPRC will be demonstrated on a scaled 2-bladed wind turbine.
arxiv +1 more source
Framing Failures in Wood-Frame Hip Roofs under Extreme Wind Loads
Frontiers in Built Environment, 2018 Wood-frame residential roof failures are among the most common and expensive types of wind damage. Hip roofs are commonly understood to be more resilient during extreme wind in relation to gable roofs.
Sarah A. Stevenson +2 more
doaj +1 more source
Low Speed Wind Tunnel Design and Optimization Using Computational Techniques and Experimental Validation [PDF]
INCAS Bulletin, 2019 Generally, the experimental aerodynamics is related to wind tunnel experiments. The wind tunnel design topic is very old but the development in computational fluid dynamics led to improvement in the wind tunnel design. This paper describes the design and
Ahmed ABOELEZZ
doaj +1 more source