| OCR Text |
Show Nomenclature Note: the text uses an overbar to denote the normalized counterpart of variables listed here. The normalizing factor is listed with the variables below. An = cross sectional area of the nozzle Dc = combustion region diameter Dn = nozzle diameter f = Fanning friction coefficient L = length of the tailpipe region ~ = nozzle length post bypass Lc = length of the combustion region Ln = total nozzle length ~,b = mass flow rate of bypass fuel P = pressure in the combustion chamber; normalized with the ambient pressure P A P A = the ambient pressure, upstream of the combustor Pu = pressure at the upstream end of the inlet pipe (station u); normalized by Pa R = specific ideal gas constant, SR = the stoichiometric ratio for the mass of oxygen consumed per mass of fuel burned T A = the ambient temperature, upstream of the combustor TOl = combustion zone inlet stagnation temperature (station i); normalized with T A Toe = combustion zone exit stagnation temperature (station e); normalized with TA T w = combustion zone wall temperature, normalized with TA. u = velocity; normalized with ~ t1n = nozzle velocity; normalized with ~ ~ = reference velocity V m = bypass port mixing volume Y f = fuel mass fraction in combustion zone Yfb = fuel mass fraction at the bypass port Yf,u = fuel mass fraction in the nozzle upstream of the bypass port Yox = oxygen mass fraction in combustion zone Y 0)(,1 = oxygen mass fraction, combustion zone inlet, station i p = combustion region density PA = ambient density y = ratio of specific heats tc = combustion time te = exit flow time tHT = heat transfer time t l = inlet flow time tm = mixing time MIf = fuel heat of combustion per unit mass 10 |
