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What is being addressed as flamelets |
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Answer» Flamelet approach is applied for combustion modelling. Global one-step mechanism of methane is adopted. The temperature and species are computed in the mixture fraction space [15]. And the density of the mixture p(Z) can be calculated using the ideal gas relationship ρ(z)= P R0T(Z)∑ Yi(Z) Wi
where Ro is the universal gas constant and P is the pressure. To determine the mean density of the HOT flow, A presumed probability density function (PDF) ˜ p (Z,x,t) is adopted and a standard β-function has been chosen (13) ˜ P (Z,x,t)= Za−1(1−Z)β−1 ∫ 1 0 Zα−1(1−Z)β−1dz
(14)α= ˜ Z ( ˜ Z (1− ˜ Z ) ˜ z″2
−1);β=(1− ˜ Z )( ˜ Z (1− ˜ Z ) ˜ z″2
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