flammtyp

Flammtyp is a term used in combustion science and fire safety literature to denote a category or typology of flames defined by observable properties and behavior. The word combines "flame" and "type" and, while encountered in various languages, there is no universally accepted standard definition. In most uses, flammtyp functions as a qualitative label that researchers or practitioners assign to flame regimes to facilitate discussion, comparison, or modeling.

Classification and criteria: Flammtyp schemes typically consider the combustion regime (premixed, partially premixed, non-premixed), flame structure (laminar versus turbulent), stability (steady, oscillating, pulsating), and emission or heat-release characteristics. Geometry and boundary conditions, such as confined versus free flames, may also influence the label. Some taxonomies emphasize color or spectral features, while others focus on practical criteria for safety assessment.

Applications: The term appears in educational materials, simulation inputs, and hazard assessments. In computational workflows, a flammtyp label may correspond to a predefined set of boundary conditions, reaction mechanisms, or transport properties used in a model. In experiments, labeling flames by flammtyp can aid in organizing image sequences, chemiluminescence data, or temperature measurements.

Measurement and analysis: Identification of flammtyp often involves imaging (high-speed video, schlieren), spectroscopic diagnostics, and thermochemical measurements. Analysts use these data to assign a flammtyp and to compare against theoretical predictions or other datasets.

See also: flame, combustion, flame regime, flame color, laminar flow, turbulence.