The bright conical flames near the jets of a standard household gas stove are the premixed flame front. The remaining blue glow is due to diffusion.
A premixed flame is a flame in which the oxidizer has been mixed with the fuel before it reaches the flame front. This creates a thin flame front as all of the reactants are readily available. If the mixture is ritch, a diffusion flame will generally be found further downstream. Wikipedia does not have an article with this exact name. ... Wikipedia does not have an article with this exact name. ... An oxidizing agent is a substance that oxidizes another substance in electrochemistry or redox chemical reactions in general. ... For the workstation, see SGI Fuel. ... A nearly-turbulent diffusion flame. ...
If the flow of the fuel–oxidizer mixture is laminar, the flame speed of premixed flames is dominated by the chemistry. If the flow rate is below the flame speed, the flame will move upstream until the fuel is consumed or until it encounters a flame holder. If the flow rate is equal to the flame speed, we would expect a stationary flat flame front normal to the flow direction. If the flow rate is above the flame speed, the flame front will become conical such that the component of the velocity vector normal to the flame front is equal to the flame speed. As a result, most premixed flames in daily life are roughly conical. A flame holder is a component of a jet engine designed to help maintain continual combustion. ...
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