Author: Mark V. Morkovin
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 30
Book Description
Complex three dimensional flow fields are seen to consist of identifiable, morphologically invariant, mildly interacting, flow structures or modules. Outputs of such flow fields such as wind loads, heat and mass transfer, flow quality, mixing, and pressure losses can be rationally established and with a knowledge of the modular structure. The paper discusses the modular approach for the case of flows around three-dimensional obstacles in boundary layers and for the case of tailoring free-stream flow and turbulence by flow inserts such as screens, perforated plates, honeycombs and foam slabs. (Author Modified Abstract).
An Approach to Flow Engineering Via Functional Flow Modules
Author: Mark V. Morkovin
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 30
Book Description
Complex three dimensional flow fields are seen to consist of identifiable, morphologically invariant, mildly interacting, flow structures or modules. Outputs of such flow fields such as wind loads, heat and mass transfer, flow quality, mixing, and pressure losses can be rationally established and with a knowledge of the modular structure. The paper discusses the modular approach for the case of flows around three-dimensional obstacles in boundary layers and for the case of tailoring free-stream flow and turbulence by flow inserts such as screens, perforated plates, honeycombs and foam slabs. (Author Modified Abstract).
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 30
Book Description
Complex three dimensional flow fields are seen to consist of identifiable, morphologically invariant, mildly interacting, flow structures or modules. Outputs of such flow fields such as wind loads, heat and mass transfer, flow quality, mixing, and pressure losses can be rationally established and with a knowledge of the modular structure. The paper discusses the modular approach for the case of flows around three-dimensional obstacles in boundary layers and for the case of tailoring free-stream flow and turbulence by flow inserts such as screens, perforated plates, honeycombs and foam slabs. (Author Modified Abstract).
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 464
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 464
Book Description
Wind Load Requirements for Buildings
Author: Richard Alston Parmelee
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages : 276
Book Description
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages : 276
Book Description
Instability and Transition
Author: M.Y. Hussaini
Publisher: Springer Science & Business Media
ISBN: 1461234301
Category : Science
Languages : en
Pages : 462
Book Description
These two volumes contain the proceedings of the workshop on the Institute for Computer Instability and Transition, sponsored by Applications in Science and Engineering (ICASE) and the Langley Research Center (LaRC), during May 15 to June 9, 1989. The work shop coincided with the initiation of a new, focused research pro gram on instability and transition at LaRC. The objectives of the workshop were to (i) expose the academic community to current technologically important issues of instability and transition in shear flows over the entire speed range, (ii) acquaint the academic com munity with the unique combination of theoretical, computational and experimental capabilities at LaRC and foster interaction with these facilities, (iii) review current state-of-the-art and propose fu ture directions for instability and transition research, (iv) accelerate progress in elucidating basic understanding of transition phenomena and in transferring this knowledge into improved design methodolo gies through improved transition modeling, and (v) establish mech anisms for continued interaction. The objectives (i) to (iii) were of course immediately met. It is still premature to assess whether ob jectives (iv) and (v) are achieved. The workshop program consisted of tutorials, research presenta tions, panel discussions, experimental and computational demonstra tions, and collaborative projects.
Publisher: Springer Science & Business Media
ISBN: 1461234301
Category : Science
Languages : en
Pages : 462
Book Description
These two volumes contain the proceedings of the workshop on the Institute for Computer Instability and Transition, sponsored by Applications in Science and Engineering (ICASE) and the Langley Research Center (LaRC), during May 15 to June 9, 1989. The work shop coincided with the initiation of a new, focused research pro gram on instability and transition at LaRC. The objectives of the workshop were to (i) expose the academic community to current technologically important issues of instability and transition in shear flows over the entire speed range, (ii) acquaint the academic com munity with the unique combination of theoretical, computational and experimental capabilities at LaRC and foster interaction with these facilities, (iii) review current state-of-the-art and propose fu ture directions for instability and transition research, (iv) accelerate progress in elucidating basic understanding of transition phenomena and in transferring this knowledge into improved design methodolo gies through improved transition modeling, and (v) establish mech anisms for continued interaction. The objectives (i) to (iii) were of course immediately met. It is still premature to assess whether ob jectives (iv) and (v) are achieved. The workshop program consisted of tutorials, research presenta tions, panel discussions, experimental and computational demonstra tions, and collaborative projects.
Proceedings
Author: Jack E. Cermak
Publisher:
ISBN:
Category : Wind power
Languages : en
Pages : 556
Book Description
Publisher:
ISBN:
Category : Wind power
Languages : en
Pages : 556
Book Description
A Collection of Technical Papers
Author:
Publisher:
ISBN:
Category : Aerothermodynamics
Languages : en
Pages : 708
Book Description
Publisher:
ISBN:
Category : Aerothermodynamics
Languages : en
Pages : 708
Book Description
Aerodynamic Drag Mechanisms of Bluff Bodies and Road Vehicles
Author: Gino Sovran
Publisher: Springer Science & Business Media
ISBN: 1468484346
Category : Technology & Engineering
Languages : en
Pages : 381
Book Description
These Proceedings contain the papers and oral discussions presented at the Symposium on AERODYNAMIC DRAG MECHANISMS of Bluff Bodies and Road Vehides held at the General Motors Research Laboratories in Warren, Michigan, on September 27 and 28, 1976. This international, invitational Symposium was the twentieth in an annual series, each one having been in a different technical discipline. The Symposia provide a forum for areas of science and technology that are of timely interest to the Research Laboratories as weIl as the technical community at large, and in which personnel of the Laboratories are actively involved. The Symposia furnish an opportunity for the exchange of ideas and current knowledge between participating research specialists from educational, industrial arid governmental institutions and serve to stimulate future research activity. The present world-wide energy situation makes it highly desirable to reduce the force required to move road vehicles through the atmosphere. A significant amount of the total energy consumed for transportation is expended in overcoming the aerodynamic resistance to motion of these vehicles. Reductions in this aerodynamic drag can therefore have a large impact on ground transportation energy requirements. Although aerodynamic development work on road vehides has been performed for many years, it has not been widely reported or accompanied by much basic research.
Publisher: Springer Science & Business Media
ISBN: 1468484346
Category : Technology & Engineering
Languages : en
Pages : 381
Book Description
These Proceedings contain the papers and oral discussions presented at the Symposium on AERODYNAMIC DRAG MECHANISMS of Bluff Bodies and Road Vehides held at the General Motors Research Laboratories in Warren, Michigan, on September 27 and 28, 1976. This international, invitational Symposium was the twentieth in an annual series, each one having been in a different technical discipline. The Symposia provide a forum for areas of science and technology that are of timely interest to the Research Laboratories as weIl as the technical community at large, and in which personnel of the Laboratories are actively involved. The Symposia furnish an opportunity for the exchange of ideas and current knowledge between participating research specialists from educational, industrial arid governmental institutions and serve to stimulate future research activity. The present world-wide energy situation makes it highly desirable to reduce the force required to move road vehicles through the atmosphere. A significant amount of the total energy consumed for transportation is expended in overcoming the aerodynamic resistance to motion of these vehicles. Reductions in this aerodynamic drag can therefore have a large impact on ground transportation energy requirements. Although aerodynamic development work on road vehides has been performed for many years, it has not been widely reported or accompanied by much basic research.
Turbulent Flow Structure Near Walls
Author: J. D. A. Walker
Publisher:
ISBN:
Category : Boundary value problems
Languages : en
Pages : 184
Book Description
In the past decade, progress has been made in determining the nature of turbulent flow near walls. Many of these advances, which have occurred through new experimental methodologies, direct numerical simulations, and new theoretical developments, are described in this volume.
Publisher:
ISBN:
Category : Boundary value problems
Languages : en
Pages : 184
Book Description
In the past decade, progress has been made in determining the nature of turbulent flow near walls. Many of these advances, which have occurred through new experimental methodologies, direct numerical simulations, and new theoretical developments, are described in this volume.
Maintainability
Author: Benjamin S. Blanchard
Publisher: John Wiley & Sons
ISBN: 9780471591320
Category : Technology & Engineering
Languages : en
Pages : 560
Book Description
Gets professionals quickly on-line with all the crucial designconcepts and skills they need to dramatically improve themaintainability of their products or systems Maintainability is a practical, step-by-step guide to implementinga comprehensive maintainability program within your organization'sdesign and development function. From program scheduling,organizational interfacing, cost estimating, and supplieractivities, to maintainability prediction, task analysis, formaldesign review, and maintainability tests and demonstrations, itdescribes all the planning and organizational aspects ofmaintainability for projects under development and * Schools readers in state-of-the-art maintainability designtechniques * Demonstrates methods for quantitatively measuring maintainabilityat every stage of the development process * Shows how to increase effectiveness while reducing life-cyclecosts of already existing systems or products * Features numerous case studies, sample applications, and practiceexercises * Functions equally well as a professional reference and aclassroom text Independent cost analysis studies indicate that an inordinatelylarge percentage of the overall life-cycle cost of mostsystems/products is currently taken up by maintenance and support.In fact, for many large-scale systems, maintenance and support havebeen shown to account for as much as 60% to 75% of overalllife-cycle costs. At a time of fierce global competition, long-termcost effectiveness is a major competitive advantage thatmanufacturers simply cannot afford to underestimate. Clearly then,to remain competitive in today's international marketplace,companies must institute programs for reducing system maintenanceand support costs-- comprehensive programs that are an integralpart of the design and development process from its earliestconceptual stages. This book shows you how to implement such a program within yourorganization's design and development function. From programscheduling, organizational interfacing, cost estimating, andsupplier activities, to maintainability prediction, task analysis,formal design review, and maintainability tests and demonstrations,it describes all the planning and organizational aspects ofmaintainability for projects under development while schooling youin the use of the full range of proven design techniques--includingmethods for quantitatively measuring maintainability at every stageof the development process. The authors also clearly explain howthe principles and practices outlined in Maintainability can beapplied to the evaluation of systems/products now in use both toincrease their effectiveness and reduce long-term costs. While theoretical aspects of maintainability are discussed, theauthors' main purpose in writing this book is to help getprofessionals quickly on-line with the essential maintainabilityconcepts and skills. Hence, in addition to clarity of presentationand a rational hierarchical format, Maintainability features manycase studies and sample applications that help to clarify thepoints covered, and numerous practice exercises that help engineersto test their mastery of the concepts and techniques covered. Maintainability is an invaluable professional tool for engineersfrom all disciplines who are involved with the design, testing,prototyping, manufacturing, and maintenance of products andsystems. It also serves as a superior course book forgraduate-level programs in those disciplines.
Publisher: John Wiley & Sons
ISBN: 9780471591320
Category : Technology & Engineering
Languages : en
Pages : 560
Book Description
Gets professionals quickly on-line with all the crucial designconcepts and skills they need to dramatically improve themaintainability of their products or systems Maintainability is a practical, step-by-step guide to implementinga comprehensive maintainability program within your organization'sdesign and development function. From program scheduling,organizational interfacing, cost estimating, and supplieractivities, to maintainability prediction, task analysis, formaldesign review, and maintainability tests and demonstrations, itdescribes all the planning and organizational aspects ofmaintainability for projects under development and * Schools readers in state-of-the-art maintainability designtechniques * Demonstrates methods for quantitatively measuring maintainabilityat every stage of the development process * Shows how to increase effectiveness while reducing life-cyclecosts of already existing systems or products * Features numerous case studies, sample applications, and practiceexercises * Functions equally well as a professional reference and aclassroom text Independent cost analysis studies indicate that an inordinatelylarge percentage of the overall life-cycle cost of mostsystems/products is currently taken up by maintenance and support.In fact, for many large-scale systems, maintenance and support havebeen shown to account for as much as 60% to 75% of overalllife-cycle costs. At a time of fierce global competition, long-termcost effectiveness is a major competitive advantage thatmanufacturers simply cannot afford to underestimate. Clearly then,to remain competitive in today's international marketplace,companies must institute programs for reducing system maintenanceand support costs-- comprehensive programs that are an integralpart of the design and development process from its earliestconceptual stages. This book shows you how to implement such a program within yourorganization's design and development function. From programscheduling, organizational interfacing, cost estimating, andsupplier activities, to maintainability prediction, task analysis,formal design review, and maintainability tests and demonstrations,it describes all the planning and organizational aspects ofmaintainability for projects under development while schooling youin the use of the full range of proven design techniques--includingmethods for quantitatively measuring maintainability at every stageof the development process. The authors also clearly explain howthe principles and practices outlined in Maintainability can beapplied to the evaluation of systems/products now in use both toincrease their effectiveness and reduce long-term costs. While theoretical aspects of maintainability are discussed, theauthors' main purpose in writing this book is to help getprofessionals quickly on-line with the essential maintainabilityconcepts and skills. Hence, in addition to clarity of presentationand a rational hierarchical format, Maintainability features manycase studies and sample applications that help to clarify thepoints covered, and numerous practice exercises that help engineersto test their mastery of the concepts and techniques covered. Maintainability is an invaluable professional tool for engineersfrom all disciplines who are involved with the design, testing,prototyping, manufacturing, and maintenance of products andsystems. It also serves as a superior course book forgraduate-level programs in those disciplines.
The Structure of Three-dimensional Separated Flows in Obstacle-boundary Layer Interactions
Author: Raymond Sedney
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 64
Book Description
The subject is investigated with flow visualization techniques; the turbulent boundary layer on the wall of a continuous supersonic wind tunnel is used. Sizeable separated flow regions can be studied since the wall width is 38cm and the boundary layer is typically 2.5cm thick. The large scale of the experiment is required to resolve the fine details of the flow structure. The flow visualization techniques are discussed. The structure of the separated flow upstream of the obstacle is seen to change with relatively small changes in Reynolds number R; the number of vortices varies from 6 to 4 to 2 as R changes. Data are presented for large and small protuberances, but the latter are emphasized.
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 64
Book Description
The subject is investigated with flow visualization techniques; the turbulent boundary layer on the wall of a continuous supersonic wind tunnel is used. Sizeable separated flow regions can be studied since the wall width is 38cm and the boundary layer is typically 2.5cm thick. The large scale of the experiment is required to resolve the fine details of the flow structure. The flow visualization techniques are discussed. The structure of the separated flow upstream of the obstacle is seen to change with relatively small changes in Reynolds number R; the number of vortices varies from 6 to 4 to 2 as R changes. Data are presented for large and small protuberances, but the latter are emphasized.