Search found 3 matches

by chenyx
Fri Jul 07, 2023 5:05 am
Forum: code_saturne usage
Topic: Parameters of Large Eddy Simulation(LES)
Replies: 1
Views: 2326

Parameters of Large Eddy Simulation(LES)

Dear developers, Sorry to bother you again. In code_saturne 7.0.4, I noted that the parameter of LES is different with other sovlers like charLES or some reference[Pope 2000 Turbulent flows] about LES. More specifically, the computation for filtered size is that, delta = xfil *(xa*volume(iel))**xb, ...
by chenyx
Sat Apr 01, 2023 12:12 pm
Forum: code_saturne usage
Topic: Parameters of dynamic model in LES
Replies: 0
Views: 201725

Parameters of dynamic model in LES

Hello, In code_saturne 7.0.4, I noted that the parameter of dynamic model in LES is different with other sovler like charLES. More specifically, the equation delta = xfil *(xa*volume(iel))**xb where xfil defaults to 2.0, xa to 1.0, xb to 1/3, which is different with other sovler that use xfil to be ...
by chenyx
Mon Jul 18, 2022 5:28 pm
Forum: code_saturne usage
Topic: large eddy simulation with combustion(idilat)
Replies: 1
Views: 2408

large eddy simulation with combustion(idilat)

Hello, In code_saturne 4.0.2, I tryed idilat = 1, 2, 4 for LFR(laminar finite rate) combustion model with dynamic LES and idilat = 1 for k-omega SST URANS in a CH4&H2/air bluff body flame. The results are quite different. In URANS, the time-average temperature in the flame are about 2000 K, but ...