flame speed

Flame speed is the rate at which a flame moves through a flammable mixture, such as a gas or vapor-air mix. It measures how quickly the combustion process spreads from the point of ignition. A higher flame speed means the flame advances faster, which can impact safety and engine performance. This speed depends on factors like the type of fuel, mixture composition, pressure, and temperature. Understanding flame speed helps in designing safer combustion systems and controlling how efficiently fuels burn.