Sentence examples for speed of lean from inspiring English sources

Results showed that existing models were either remarkably under-predicted or inconvenient to predict the laminar flame speed of lean premixed H2/CO/air flames.

A mixing model for the calculation of laminar flame speed of lean premixed H2/CO fuel blends was derived through asymptotic analysis coupled with a reduced chemistry mechanism.

Laminar flame speeds of lean premixed H2/CO/air mixtures were measured in the counterflow configuration over a wide range of H2 content at lean conditions.

It is found that the increase of pressure affects the propagation speeds of lean and rich cool flames differently due to the negative temperature coefficient effect.

Laminar flame speeds of lean H2/CO/CO2 (syngas) fuel mixtures have been measured over a range of fuel compositions (5 95% for H2 and CO and up to 40% for CO2 by volume), reactant preheat temperatures (up to 700 K), and pressures (1 5 atm).

High-pressure flame speeds of lean and rich DME flames with and without CO2 dilution were measured in a nearly-constant-pressure vessel between about 1 and 20 bar.

Both the experimental and calculation results revealed that the laminar flame speeds of lean premixed H2/CO/air mixtures increased with H2 content significantly when H2 content was small (⩽15%) and gradually when H2 content was large (>15%).

Despite the difference in the fuel type, C2HF5 and C3H2F3Br were found to be less effective at reducing the flame speeds of the lean flames as compared to that of the rich flames.

Although the updated model improved the prediction of flame speeds for lean mixtures, errors remained for rich conditions at elevated pressure, likely due to uncertainty in the rates of CH3 + H +M) = CH4 +M) and the branching and termination reaction pair of CH3 + HO2 = CH3O + OH and CH3 + HO2 = CH4 + O2.

Comparisons among experiments and model predictions show that the HP Mech with the prompt reactions, USC Mech, and Li Mech have better predictions of the flame speed at lean, ultra-lean, rich, and lean with CO2 conditions than GRI Mech and Aramco Mech.

Moreover, the detailed kinetic mechanism adopted in the CFD simulations is successfully validated in the conditions of interest using recent literature data [2] on the effect of nitrogen dilution on the flame speeds of several CH4/H2/air lean mixtures.