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Laminar flame speed is a property of a combustible mixture.[1] It is the speed at which an un-stretched laminar flame will propagate through a quiescent mixture of unburned reactants. Laminar flame speed is given the symbol sL. According to the thermal flame theory of Mallard and Le Chatelier, the un-stretched laminar flame speed is dependent on only three properties of a chemical mixture: the thermal diffusivity of the mixture, the reaction rate of the mixture and the temperature through the flame zone:
is thermal diffusivity,
is reaction rate,
and the temperature subscript u is for unburned, bis for burned and i is for ignition temperature.
While the laminar flame speed is a property of the mixture alone, the same is not true for turbulent flame speed - or turbulent burning velocity as it is more correctly called. As flow velocity increases and turbulence is introduced, a flame will begin to wrinkle, then corrugate and eventually the flame front will be broken and transport properties will be enhanced by turbulent eddies in the flame zone. As a result, the flame front of a turbulent flame will propagate at a velocity that is not only a function of the mixture's chemical properties but also properties of the flow and turbulence.
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How do you find tangential velocity?
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When you combine 2 velocities that are in the same directions, add them together to find the resultant velocity. When you combine 2 velocities that are in opposite directions, subtract the smaller velocity from the larger velocity to find the resultant velocity.
How do you find resultant velocity?
When you combine 2 velocities that are in the same directions, add them together to find the resultant velocity. When you combine 2 velocities that are in opposite directions, subtract the smaller velocity from the larger velocity to find the resultant velocity.
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How do you find speed if you know the velocity?
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Yes.
When calculating acceleration to find the change in velocity you subtract the what velocity from the final velocity?
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To find acceleration you subtract what?
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How do you find time when you know the distance and the velocity?
distance/velocity = time
How do you find tangential velocity?
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