Author:
Publisher: DIANE Publishing
ISBN: 1428995641
Category :
Languages : en
Pages : 59
Book Description
Visualization of flows in packed beds of twisted tapes
Author:
Publisher: DIANE Publishing
ISBN: 1428995641
Category :
Languages : en
Pages : 59
Book Description
Publisher: DIANE Publishing
ISBN: 1428995641
Category :
Languages : en
Pages : 59
Book Description
Visualization of Flows in Packed Beds of Twisted Tapes
Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781723908941
Category :
Languages : en
Pages : 60
Book Description
A videotape presentation of the flow field in a packed bed of 48 twisted tapes which can be simulated by very thin virtual cylinders has been assembled. The indices of refraction of the oil and the Lucite twisted tapes were closely matched, and the flow was seeded with magnesium oxide particles. Planar laser light projected the flow field in two dimensions both along and transverse to the flow axis. The flow field was three dimensional and complex to describe, yet the most prominent finding was flow threads. It appeared that axial flow spiraled along either within the confines of a virtual cylindrical boundary or within the exterior region, between the tangency points, of the virtual cylinders. Random packing and bed voids created vortices and disrupted the laminar flow but minimized the entrance effects. The flow-pressure drops in the packed bed fell below the Ergun model for porous-media flows. Single-twisted-tape results of Smithberg and Landis (1964) were used to guide the analysis. In appendix A the results of several investigators are scaled to the Ergun model. Further investigations including different geometric configurations, computational fluid dynamic (CFD) gridding, and analysis are required.Hendricks, R. C. and Braun, M. J. and Peloso, D. and Athavale, M. M. and Mullen, R. L.Glenn Research CenterFLOW DISTRIBUTION; COMPUTATIONAL FLUID DYNAMICS; AXIAL FLOW; LAMINAR FLOW; LASER OUTPUTS; VORTICES; MAGNESIUM OXIDES; POLYMETHYL METHACRYLATE
Publisher: Independently Published
ISBN: 9781723908941
Category :
Languages : en
Pages : 60
Book Description
A videotape presentation of the flow field in a packed bed of 48 twisted tapes which can be simulated by very thin virtual cylinders has been assembled. The indices of refraction of the oil and the Lucite twisted tapes were closely matched, and the flow was seeded with magnesium oxide particles. Planar laser light projected the flow field in two dimensions both along and transverse to the flow axis. The flow field was three dimensional and complex to describe, yet the most prominent finding was flow threads. It appeared that axial flow spiraled along either within the confines of a virtual cylindrical boundary or within the exterior region, between the tangency points, of the virtual cylinders. Random packing and bed voids created vortices and disrupted the laminar flow but minimized the entrance effects. The flow-pressure drops in the packed bed fell below the Ergun model for porous-media flows. Single-twisted-tape results of Smithberg and Landis (1964) were used to guide the analysis. In appendix A the results of several investigators are scaled to the Ergun model. Further investigations including different geometric configurations, computational fluid dynamic (CFD) gridding, and analysis are required.Hendricks, R. C. and Braun, M. J. and Peloso, D. and Athavale, M. M. and Mullen, R. L.Glenn Research CenterFLOW DISTRIBUTION; COMPUTATIONAL FLUID DYNAMICS; AXIAL FLOW; LAMINAR FLOW; LASER OUTPUTS; VORTICES; MAGNESIUM OXIDES; POLYMETHYL METHACRYLATE
Visualization of Flows in Packed Beds of Twisted Tapes
Author: Robert C. Hendricks
Publisher:
ISBN:
Category :
Languages : en
Pages : 54
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 54
Book Description
Visualization of Flows in Packed Beds of Twisted Tapes ... Nasa/tm--2002-208914 ... National Aeronautics and Space Administration
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Experimental Visualization of Flows in Packed Beds of Spheres
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1000
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1000
Book Description
Applied Mechanics Reviews
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 338
Book Description
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 338
Book Description
Chemical Engineering Abstracts
Author:
Publisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages : 564
Book Description
Publisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages : 564
Book Description
Flow Visualization ; Proceedings of the International Symposium
Author: Tsuyoshi Asanuma
Publisher:
ISBN:
Category : Flow visualization
Languages : en
Pages : 413
Book Description
Publisher:
ISBN:
Category : Flow visualization
Languages : en
Pages : 413
Book Description
Chemical Abstracts
Author:
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 2710
Book Description
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 2710
Book Description