Download or read book Development of Wind Tunnels for Physical Modelling of the Atmospheric Boundary Layer ABL written by Jack E. Cermak and published by . This book was released on 1994 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the evolution of physical-modeling techniques to simulate wind and wind effects. Characteristics of atmospheric boundary layers (ABLs) are reviewed and features that require modeling for wind-engineering applications are defined. Similarity criteria are presented for "exact" similarity and necessary approximations are discussed. Special features of wind tunnels needed to achieve the modeling requirements are identified. Comparisons are made of data measured in the field and in a boundary-layer wind tunnel. Wind tunnels with special capabilities for modeling the ABL are described.

Download or read book Development of a Nonstationary Flow Device for an Atmospheric Boundary Layer Wind Tunnel written by Nicholas Jon Spencer-Berger and published by . This book was released on 2003 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iowa State University researchers are in the process of developing a new wind tunnel. This tunnel will be able to perform a wide range of tests. It will not only be used in an aerodynamic (Aero) test section configuration, but also in an atmospheric boundary layer (ABL) type configuration. It will be able to create a model of the turbulent boundary layer that all structures in the atmosphere are submersed in. The tunnel is designed to utilize both closed return as well as open return tunnel configurations. This will enable the tunnel to reap the benefits of both types of tunnels. Currently most of the ABL studies rely on the assumption that atmospheric velocity variations are adequately modeled by stationary mean and turbulent flow properties. The ISU Aero/ABL tunnel will be able to develop non-stationary flows to help better study and understand this type of phenomena. The primary concern and area of research reported here has been to develop this non-stationary flow device by modeling and testing the design. The results shown reflect that a 107% gust can be achieved by the model, but with some changes to the design, a higher magnitude gust can be achieved.

Download or read book Wind Tunnels written by Justin D. Pereira and published by Nova Science Publishers. This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents current research in the study of wind tunnels, including the design, execution and numerical rebuilding of a plasma wind tunnel with the aim to analyse shock wave boundary layer interaction phenomena; the Mainz vertical wind tunnel facility experimenting on cloud physics and chemistry; an air-conditioned wind tunnel environment for the study of mass and heat flux; using wind tunnel studies to evaluate the drag coefficient of the tree crown and Pre-X aerodynamic/aerothermal characterisation through computational fluid dynamics and wind tunnels.

Download or read book The Development of a Small Scale Wind Tunnel Simulating the Atmospheric Boundary Layer in Support of a Stochastic Wind Model written by Maximillian Hobson-Dupont and published by . This book was released on 2015 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been much success in atmospheric boundary layer simulation with medium sized closed-circuit wind tunnels with test section dimensions of approximately 1 x 1 m. However, smaller, blower-type wind tunnels are more common in university laboratories due to the lower cost and smaller space requirements. A small size, open flow wind tunnel with a 1 x 1 foot test section was modified to simulate the atmospheric boundary layer with a combination of upstream spires and cubic roughness elements. The primitive spire geometry detailed in the literature was found to yield poor agreement with the power law velocity profile of interest, and a novel iterative algorithm was developed to produce nonlinear spire geometry. The geometry generated by the algorithm was tested in the wind tunnel and found to simulate the desired velocity profile based on a Hellman exponent of 0.20 with a high degree of agreement, having a maximum velocity error of 4%. This confirmed the suitability of small-sized wind tunnels for simulating the atmospheric boundary layer.

Download or read book Artificial Development of an Atmospheric Boundary Layer Flow Model in a Wind Tunnel written by Fredric A. Godshall and published by . This book was released on 1973 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Development of a Low Speed Wind Tunnel for Use in the Physical Modeling of the Atmosphere written by Joseph William Wilson and published by . This book was released on 1975 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind and the Built Environment written by National Research Council and published by National Academies Press. This book was released on 1993-02-01 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book assesses wind engineering research studies in the past two decades to identify an interdisciplinary research agenda and delineate an action plan for evaluation of critical wind engineering efforts. It promotes the interdisciplinary approach to achieve collaborative research, assesses the feasibility of formalizing undergraduate wind engineering curricula, and assesses international wind engineering research activities and transfer approaches for U.S. applications.

Download or read book Wind Tunnels written by Donald Cyril Bain and published by . This book was released on 1971 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Scientific and Industrial Research written by and published by . This book was released on 2005 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Tunnel Designs and Their Diverse Engineering Applications written by Noor Ahmed and published by BoD – Books on Demand. This book was released on 2013-03-06 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to be a valuable addition to students, engineers, scientists, industrialists, consultants and others providing greater insight into wind tunnel designs and their enormous research potential. It is a compilation of works from world experts on subsonic and supersonic wind tunnel designs, applicable to a diverse range of disciplines. The book is organised in two sections. The first section comprises of three chapters on various aspects of stationary and portable subsonic wind tunnel designs, followed by one chapter on supersonic wind tunnel and the final chapter discusses a method to address unsteadiness effects of fan blade rotation. The second section contains four chapters regarding wind tunnel applications across a multitude of engineering fields including civil, mechanical, chemical and environmental engineering.

Download or read book Wind Tunnel Simulation of the Atmospheric Boundary Layer written by Javier Huitron and published by . This book was released on 1977 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Tunnel Modeling of the Atmospheric Boundary Layer written by Sreemanth Pagadala and published by . This book was released on 1972 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The importance of simulating atmospheric flows in wind tunnels has been well established. Experiments were conducted in the Modified Aerodynamic Wind Tunnel to determine the suitability of this wind tunnel for simulating atmospheric flows and the degree to which various aspects of modeling could be fulfilled. A temperature profile to simulate the inversion aloft was generated inside the test section, and then an appropriate velocity profile was built in by means of screen mesh arrangements. The turbulence characteristics of the flow were measured. The validity of the temperature, velocity and turbulence fields were examined. It was found that while the temperature and velocity profiles were quite valid, the turbulence generated by the screen mesh arrangement was too high. The test section being short, turbulence could not be damped out to the required level. A model smoke stack was introduced into the test section to observe the effect of the modeled inversion on the plume. The smoke velocity could not be effectively controlled, and the plume could only be observed a very short distance downstream. Therefore, the plume path was not very realistic. Other smoke tests in the test section showed maximum turbulence at the surface and no significant change when the temperature profile was introduced"--Abstract, leaf ii.

Download or read book Wind Tunnel Simulation of the Atmospheric Boundary Layer written by Richard Epstein and published by . This book was released on 1975 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Affordable Housing Construction R D written by United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Technology, Environment, and Aviation and published by . This book was released on 1993 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Tunnel Modelling of Atmospheric Boundary Layer Flow Over Hills written by and published by . This book was released on 2013 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Hazards Engineering Research Infrastructure NHERI 2016 2020 Mitigating the Impact of Natural Hazards on Civil Infrastructure and Communities written by Julio Alfonso Ramirez and published by Frontiers Media SA. This book was released on 2021-08-18 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Tunnels and Experimental Fluid Dynamics Research written by Jorge Colman Lerner and published by BoD – Books on Demand. This book was released on 2011-07-27 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book "Wind Tunnels and Experimental Fluid Dynamics Research" is comprised of 33 chapters divided in five sections. The first 12 chapters discuss wind tunnel facilities and experiments in incompressible flow, while the next seven chapters deal with building dynamics, flow control and fluid mechanics. Third section of the book is dedicated to chapters discussing aerodynamic field measurements and real full scale analysis (chapters 20-22). Chapters in the last two sections deal with turbulent structure analysis (chapters 23-25) and wind tunnels in compressible flow (chapters 26-33). Contributions from a large number of international experts make this publication a highly valuable resource in wind tunnels and fluid dynamics field of research.