TS 2439
System of Units (SI)-Characteristic
This standard includes the symbols definitions and conversion factors of the systems of units (SI) charactenistic.
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- Language: English
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About This Item
TS 2439 is a terminology-oriented standard for the characteristic numbers used to express transport phenomena within the SI system of units. In engineering and physical science, these dimensionless numbers are used to compare governing effects and to describe how a process behaves; this standard focuses on naming and symbol use rather than on the phenomena themselves.
What characteristic numbers do in practice
In general technical usage, characteristic numbers condense a physical situation into a single ratio that highlights the dominant influences in a system. They are widely used in fluid mechanics, heat and mass transfer, and related transport problems because they make it easier to compare cases across scales and disciplines. The SI context helps keep notation consistent across calculations, publications, and technical communication.
According to the title and scope, this standard covers the names, symbols, definitions, and conversion factors associated with these SI-related characteristic numbers. It does not, by itself, prescribe a test method, a calculation procedure for a specific application, or acceptance limits for an engineering design.
Document boundary and status
- Covers terminology and symbol conventions for characteristic numbers linked to transport phenomena.
- Supports consistent SI-based notation.
- Includes conversion factors within its stated scope.
- This is a withdrawn TSE edition, published as equivalent to ISO 31-12:1992.
- Publication Date: 27.04.1994
- Standard Status: H (İptal Edilmiş Standard/Withdrawn standard)
- Publisher: TSE
- Document Language: tr
- ICS Classification: 01.060 Miktarlar ve Birimler
- Pages: 10
- Source Standard: ISO 31-12:1992
- International Equivalents: ISO 31-12 (1992)--; ISO 31-12:1992 EQV--
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