TY - JOUR
ID - 184
TI - Numerical simulation of turbulent compressible flows in a C-D nozzle with different divergence angles
JO - Journal of Heat and Mass Transfer Research
JA - JHMTR
LA - en
SN - 2345-508X
AU - Hamedi Estakhrsar, Mohammad Hadi
AU - Jahromi, Mehdi
AD - Malek-Ashtar University of Technology, Tehran, Iran.
AD - Malek-Ashtar University of Technology, Tehran, Iran
Y1 - 2014
PY - 2014
VL - 1
IS - 2
SP - 93
EP - 100
KW - Numerical simulation
KW - converging-diverging nozzle
KW - Divergence angle
KW - Thrust coefficient
KW - Discharge Coefficient
KW - Static temperature
DO - 10.22075/jhmtr.2014.184
N2 - Compressible gas flow inside a convergent-divergent nozzle and its exhaust plume atdifferent nozzle pressure ratios (NPR) have been numerically studied with severalturbulence models. The numerical results reveal that, the SST k–ω model give the bestresults compared with other models in time and accuracy. The effect of changes in value ofdivergence half-angle (ε ) on the nozzle performance, thrust coefficient ( Cf ) anddischarge coefficient ( C d) has been investigated numerically. The predicted results showthat for a given divergence angle, the thrust coefficient (Cf ) increases by increasing nozzlepressure ratio. Also, for a given nozzle pressure ratio, the thrust coefficient increases as thenozzle divergence angle decreases. When the CD nozzle is chocking, the value of dischargecoefficient is independent of nozzle pressure ratio and also for a given nozzle pressure ratio,the discharge coefficient increases as the divergence nozzle angle (ε) increases.
UR - https://jhmtr.semnan.ac.ir/article_184.html
L1 - https://jhmtr.semnan.ac.ir/article_184_307e64ccb3b05405719a0be38a3d6895.pdf
ER -