Author: Isaiah Gallily
Publisher:
ISBN:
Category :
Languages : en
Pages : 97
Book Description
The typical features of the motion of a nonspherical aerosol particle are discussed, an overall aim concerning its behavior in systems of importance for human environment is stated and a preliminary objective of studying methods for generation, size measurement, determination of concentration and assessment of electric charge is set. Previous investigations in these lines are reviewed. Starting with model shapes, there were produced by solution spray-drying almost perfect cubes or parallelpipeds and, by suspension gas atomization, cylindrical particles of glass fibers. Dispersion of powders by air turbulence was treated theoretically and a computational investigation of the adhesional energy between two parallelpipeds at various mutual orientations begun. The size parameters of the produced particles were determined. A way of assessing the electric charge of a nonspherical particle is analyzed in view of the specificity of its motion and the relation to the principal translational resistances brought out. The effect of Brownian rotation on the translation of an aerosol particle was discussed. An apparatus for the determination of the principal resistances of a nonspherical particle at various Knudsen numbers has been constructed and a mathematical procedure for the elucidation of results developed.
The Dynamics of Non-spherical Particles. 1. Controlled Generation of Non-spherical Aerosols and Methods for Their Size, Concentration and Electric Charge Measurement
Author: Isaiah Gallily
Publisher:
ISBN:
Category :
Languages : en
Pages : 97
Book Description
The typical features of the motion of a nonspherical aerosol particle are discussed, an overall aim concerning its behavior in systems of importance for human environment is stated and a preliminary objective of studying methods for generation, size measurement, determination of concentration and assessment of electric charge is set. Previous investigations in these lines are reviewed. Starting with model shapes, there were produced by solution spray-drying almost perfect cubes or parallelpipeds and, by suspension gas atomization, cylindrical particles of glass fibers. Dispersion of powders by air turbulence was treated theoretically and a computational investigation of the adhesional energy between two parallelpipeds at various mutual orientations begun. The size parameters of the produced particles were determined. A way of assessing the electric charge of a nonspherical particle is analyzed in view of the specificity of its motion and the relation to the principal translational resistances brought out. The effect of Brownian rotation on the translation of an aerosol particle was discussed. An apparatus for the determination of the principal resistances of a nonspherical particle at various Knudsen numbers has been constructed and a mathematical procedure for the elucidation of results developed.
Publisher:
ISBN:
Category :
Languages : en
Pages : 97
Book Description
The typical features of the motion of a nonspherical aerosol particle are discussed, an overall aim concerning its behavior in systems of importance for human environment is stated and a preliminary objective of studying methods for generation, size measurement, determination of concentration and assessment of electric charge is set. Previous investigations in these lines are reviewed. Starting with model shapes, there were produced by solution spray-drying almost perfect cubes or parallelpipeds and, by suspension gas atomization, cylindrical particles of glass fibers. Dispersion of powders by air turbulence was treated theoretically and a computational investigation of the adhesional energy between two parallelpipeds at various mutual orientations begun. The size parameters of the produced particles were determined. A way of assessing the electric charge of a nonspherical particle is analyzed in view of the specificity of its motion and the relation to the principal translational resistances brought out. The effect of Brownian rotation on the translation of an aerosol particle was discussed. An apparatus for the determination of the principal resistances of a nonspherical particle at various Knudsen numbers has been constructed and a mathematical procedure for the elucidation of results developed.
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1124
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1124
Book Description
Government Reports Announcements
Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 1456
Book Description
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 1456
Book Description
Government Reports Announcements & Index
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1104
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1104
Book Description
Government Reports Index
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1262
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1262
Book Description
Government Reports Annual Index
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1198
Book Description
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1198
Book Description
Physics Briefs
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 1224
Book Description
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 1224
Book Description
The Dynamics of Non-Spherical Particles. Part II. Mobility in Non-Orienting Fields
Author: Isaiah Gallily
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
Book Description
This report presents the stochastic nature of the mobility of aerosol particles in non-orienting fields of force. A dynamic model for the interaction between particles' translation and Brownian rotation was assumed and a Monte Carlo method applied to compute the distribution of particles' (verticle) trajectories. The distribution was calculated for several particle shapes, various geometric dimensions, various total times of motion, and various initial orientations. From the calculations it was seen that the aerodynamic diameter is actually a statistical parameter, which should be taken into account. On the experimental side, the principal translational coefficients of cylindrical glass fibers was determined with the aid of a special apparatus and technique. Fibers' dimensions were found according to a previously developed photogrammetric method, employing a scanning electron microscope.
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
Book Description
This report presents the stochastic nature of the mobility of aerosol particles in non-orienting fields of force. A dynamic model for the interaction between particles' translation and Brownian rotation was assumed and a Monte Carlo method applied to compute the distribution of particles' (verticle) trajectories. The distribution was calculated for several particle shapes, various geometric dimensions, various total times of motion, and various initial orientations. From the calculations it was seen that the aerodynamic diameter is actually a statistical parameter, which should be taken into account. On the experimental side, the principal translational coefficients of cylindrical glass fibers was determined with the aid of a special apparatus and technique. Fibers' dimensions were found according to a previously developed photogrammetric method, employing a scanning electron microscope.
Aerosol Measurement
Author: Pramod Kulkarni
Publisher: John Wiley & Sons
ISBN: 0470387416
Category : Science
Languages : en
Pages : 920
Book Description
Aerosol Measurement: Principles, Techniques, and Applications Third Edition is the most detailed treatment available of the latest aerosol measurement methods. Drawing on the know-how of numerous expert contributors; it provides a solid grasp of measurement fundamentals and practices a wide variety of aerosol applications. This new edition is updated to address new and developing applications of aerosol measurement, including applications in environmental health, atmospheric science, climate change, air pollution, public health, nanotechnology, particle and powder technology, pharmaceutical research and development, clean room technology (integrated circuit manufacture), and nuclear waste management.
Publisher: John Wiley & Sons
ISBN: 0470387416
Category : Science
Languages : en
Pages : 920
Book Description
Aerosol Measurement: Principles, Techniques, and Applications Third Edition is the most detailed treatment available of the latest aerosol measurement methods. Drawing on the know-how of numerous expert contributors; it provides a solid grasp of measurement fundamentals and practices a wide variety of aerosol applications. This new edition is updated to address new and developing applications of aerosol measurement, including applications in environmental health, atmospheric science, climate change, air pollution, public health, nanotechnology, particle and powder technology, pharmaceutical research and development, clean room technology (integrated circuit manufacture), and nuclear waste management.
N.A.P.C.A. Abstract Bulletin
Author: United States. Environmental Protection Agency
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 1068
Book Description
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 1068
Book Description