burning velocity

burning velocity

[′bər·niŋ və′läs·əd·ē]
(chemistry)
The normal velocity of the region of combustion reaction (reaction zone) relative to nonturbulent unburned gas, in the combustion of a flammable mixture.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

flame spread

Flaming combustion along a surface (not to be confused with the transfer of flame by air currents).
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The fact that cooled EGR leads to a decrease in laminar burning velocity is well known.
Further, the faster laminar burning velocity of methanol [4] could sustain higher levels of dilution in the engine.
* Class 2L: lower burning velocity (BV) Class 2s with burning velocities less than or equal to 10 cm/s (3.9 in./s); and
[14] presented an equation that includes the effect of the mass of venting devices and laminar burning velocity of combustible mixture inside cylindrical and rectangular vessels with volumes varying from 0.009 [m.sup.3] to 0.09 [m.sup.3].
As all of the air for combustion is pre-mixed with the fuel prior to combustion taking place, this increases the burning velocity and consequently produces a smaller, more compact high-temperature flame than that of an atmospheric burner.
Also, maximum burning velocity decreases with increased carbon atoms in the fuels.
where [T.sub.f], [V.sub.u] represent maximum temperature and the burning velocity of the propagated flame in a combustible mixture of organic fuel particles, respectively.
For burning velocity measurement, a number of techniques have been developed.
As shown in Table 1, refrigerants that have a burning velocity (BV) of 10 cm/sec or less, defined by ASHRAE 34, fall into Class 2L.
- A compact combustion chamber design incorporates burning velocity and cooling performance suitable for an engine that emphasizes torque characteristics in the rpm ranges actually used by a 125cc scooter.