Gas and Particle Motion

Details

• Personal Author:
  Baron, Paul A. ; Willeke K
• Description:
  Aerosols consist of two components: a gas or gas mixture, most commonly air, and the particles suspended in it. The behavior of the particles within the aerosol depends to a large extent on the motion and intrinsic properties of the suspending gas. Submicrometer-sized particles, especially those <0.1 um diameter, are affected by the motion of individual gas molecules (the free molecular regime). Thus, the kinetic theory of gases is useful in understanding the behavior of these particles. Larger particles can be treated as being submersed in a continuous gaseous medium or, more broadly, a fluid (the continuum regime). The tools of gas or fluid dynamics are more useful for this size range. Intermediate-sized particles can usually be treated by an adjustment of equations from the continuum regime. This intermediate range is termed the transition or slip regime. Whether considering a molecular ensemble or a continuous fluid, the motion of the gas will largely dictate the behavior of the suspended particles. In this chapter, concepts and parameters that affect gas and particle motion will be discussed and quantified as migration and deposition parameters in specific force fields. [Description provided by NIOSH]
• Subjects:
  Aerosols Behavior Occupational Health Safety
• Keywords:
  Fluids Gas-mixtures Gases
• ISBN:
  9780442004866
• Publisher:
  Van Nostrand Reinhold
• Document Type:
  Text
• Genre:
  Book
• Place as Subject:
  New York ; Ohio ; OSHA Region 2 ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DPSE - Division of Physical Sciences and Engineering
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  23-40
• NIOSHTIC Number:
  nn:20022047
• Citation:
  Aerosol measurement: principles, techniques, and applications. Willeke K, Baron PA, eds. New York: Van Nostrand Reinhold, 1993 Jan; :23-40
• Editor(s):
  Willeke K; Baron PA
• Federal Fiscal Year:
  1993
• Peer Reviewed:
  False
• Source Full Name:
  Aerosol measurement: principles, techniques, and applications
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:13ef136ca149e27cbffd3133b1054fe48ee21e960b12683276cc7609349225e52cb2495365ebdbaf8ecb23514727a95e4af585ac380a45f6f3fd56a06d259820
• Download URL:
  https://stacks.cdc.gov/view/cdc/199027/cdc_199027_DS1.pdf
• File Type:
  [PDF - 815.88 KB ]