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Numerical Solution of Partial Differential Equations in Random Domains:An Application to wind engineering

Communications in Computational Physics 2009年第2期5卷 515-531页

作者： Claudio Canuto Davide Fransos Dipartimento di Matematica Politecnico di TorinoC.so Duca degli Abruzzi 2410129 TorinoItaly

An application of recent uncertainty quantification techniques to wind engineering is presented.In particular,the study of the effects of small geometric changes in the Sunshine Skyway Bridge deck on its aerodynamic behavior is addressed.This results in the numerical solution of a proper PDE posed in a domain affected by randomness,which is handled through a mapping approach.A non-intrusive Polynomial Chaos expansion allows to transform the stochastic problem into a deterministic one,in which a commercial code is used as a black-box for the solution of a number of Reynolds-Averaged Navier-Stokes simulations.The use of proper Gauss-Patterson nested quadrature formulas with respect to a Truncated Weibull probability density function permits to limit the number of these computationally expensive simulations,though maintaining a sufficient accuracy.Polynomial Chaos approximations,statistical moments and probability density functions of time-independent quantities of interest for the engineering applications are obtained.

关键词： Uncertainty quantification stochastic partial differential equations random domains mapping approach polynomial chaos wind engineering

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Numerical Tools Dedicated to wind engineering in Large Urban Area

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World Journal of engineering and Technology 2016年第3期4卷 22-29页

作者： Li Wang Sophie Puygrenier Guillaume Caniot Stéphane Sanquer Didier Delaunay Meteodyn Meteorology and Dynamics Technology Beijing China Meteodyn Nantes France

This paper presents a global methodology to compute wind flow in complex urban areas in order to assess wind pedestrian comfort, wind energy, wind safety or natural ventilation potential. The numerical tool presented here is composed of a CFD soft-ware suite covering both regional scale (20 km) and urban scale (1km), and able to model the wind in any complex terrains and in large urban environments. Examples are presented in the paper in order to show the advantages of the methodology for urban designers.

关键词： wind engineering Urban Area wind Design wind Safety Comfort Sustainable De-velopment

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Flight Vehicle Performance and Aerodynamic Control

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丛书名： AIAA Education Series

2001年

作者： Frederick O. Smetana

ISBN: (数字)9781600861857

ISBN: (纸本)9781563474637

Flight Vehicle Performance and Aerodynamic Control is designed to serve as a text for either an 11-week or a 16-week course at the sophomore level. It explains typical methods used to estimate aircraft performance, the theoretical basis of these methods, and how various parameters derived from the aircraft geometry can be used to estimate the requirements of control surfaces and the aerodynamic forces required to actuate these surfaces. This book includes time-tested computer programs that perform the analyses in a manner that reduces student error and improves result accuracy. Because the source code is given, users with a FORTRAN compiler can modify the program to suit particular needs. The major advantage of the software is that more realistic problems may be treated and the effects of parametric programs are more accurate than calculators. The programs are available as executables for windows machines as well as in ASCII source code versions that can be readily compiled and then executed on Unix, Linux, and Macintosh machines, and on mainframes.

关键词： Aerodynamic Performance Aerodynamics Aeronautical engineering Aeronautics Aerospace engineering Aerospace Sciences Aircraft Carriers Aircraft Components and Structure Aircraft Conceptual Design Aircraft Design Aircraft Dynamic Modes Aircraft Engines Aircraft Instruments Aircraft Operations Aircraft Operations and Technology Aircraft Performance Aircraft Stability and Control Aircraft Stabilizer Aircraft Wing Components Aircraft Wing Design Aircrafts Airfoil Airfoil Nomenclature Airspeed Astrodynamics Astronautics Atmospheric Science Aviation Aviation Authorities and Organizations Aviation Safety Avionics Civil Aviation Combat Aircraft Combustion Chambers Compressors Energy Energy Conversion Energy Economics Energy Forms Energy Forms, Production and Conversion Energy Production Fixed-Wing Aircraft Flight Control Surfaces Flight Dynamics Flight Mechanics Flight Test Flight Training Fluid Dynamics Fluid Flow Properties Fluid Mechanics Fossil Fuels Fuel Injection Fuels Gas Turbine Guidance, Navigation, and Control Systems Heat Engines Helicopters Hydraulics Hydrodynamics Ignition Systems Jet Aircraft Liquid Fuels Longitudinal Static Stability Military Airbases Military Aircraft Military Aviation Non-Renewable Energy Petroleum Power Station Propulsion and Power Reciprocating Engine Rocket Engine Rocketry Rotorcrafts Sensors Short Takeoff and Landing Takeoff and Landing Transducers Turbines Turbomachinery Unmanned Aerial Vehicle wind engineering wind Tunnels wind Turbine Wing Configurations Wing Planforms

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An Insider’s View to Burj Dubai-the Design of the World’s Tallest Building

An Insider’s View to Burj Dubai-the Design of the World’s ...

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2009中国上海国际建筑科技大会

作者： William F.Baker James J.Pawlikowski Skidmore Owings ＆ Merrill LLPChicagoUSA

＜正＞The goal of the Burj Dubai Tower is not simply to be the world’s highest building;it’s to embody the world’s highest aspirations.The project represents the collaboration of literally thousands of people from across the globe,all striving to build a structure which pushes the limits of our current technology in order to create something never before seen.This paper will provide an overview of the features of the world’s tallest building,as well as the challenges faced in designing this unique and unprecedented structure.

关键词： wind engineering buttressed core high performance concrete

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