primary holes

primary holes

Those through which primary air enters a gas turbine engine. See primary combustion.
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Performing meshing, solver setting activities and tabulating the post processed results to study the effect of all possible options such as variation of inlet velocities, effect of temperature (which leads to buoyancy effect in flow), effect of number of secondary holes in the burning chamber, effect of opening area of primary holes, Location of secondary holes etc.
The outside row of primary holes were drilled and grouted first, followed by secondary holes on the outside row, followed by drilling and grouting of all holes on the inside row.
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