E olu ion o i egula shock s uc u es in supe sonic co- lows
C. Hue e
a
, D. Ma ínez-Ruiz a, P. Ma ínez-Fe e
b
and D. Mi a b
This wo k examines he in e ac ion o a shea laye sepa a ing wo uni o m supe sonic
s eams o Mach numbe s M1 and M2 wi h an oblique shock app oaching a an
inciden angle σi. The de elopmen conside s he ou e p oblem o oblique–shock
impingemen on a supe sonic o ex shee o in ini esimal hickness, o which he
egion o exis ence o egula shock e ac ions wi h downs eam supe sonic low is
delinea ed in he pa ame ic space (M1, M2, σi). Regula solu ions in ol ing h ee
shocks wa es, o wo shocks plus a a e ac ion wa e a e eadily ob ained by sol ing
he jump condi ions ac oss hese wa es and imposing mechanical equilib ium in he
pos -shock shea wa e. Neumann-Hende son plo s a e also used o cha ac e ize he
amily o solu ions in ol ing egula and non- egula con igu a ions. Theo e ical ools
and high- ideli y DNS a e employed o esol e he e olu ion o he complex
s uc u es p esen in he low. The massi ely-pa allel ini e-di e ence code CREAMS
is being used o sol e he uns eady, wo-dimensional se o comp essible Na ie -
S okes equa ions o mul icomponen gas mix u es. The code accu a ely ep oduces
he expec ed egula in e ac ions and p o ides he e olu ion o non- egula uns able
con igu a ions, as he one displayed in Fig. 1. A s abili y c i e ion is de i ed in e ms
o he pa ame ic space and he ini ial condi ions, hen p o iding use ul in o ma ion
o be la e employed in mo e complex scena ios ha may in ol e eac ing gases.
Figu e 1: I egula in e ac ion be ween an oblique shock and a supe sonic shea laye .
An uns able con igu a ion is ound wi h subsonic egions, e lec ed shocks, expansion
wa es and downs eam e olu ion o he mixing laye .
a
Uni e sidad Ca los III de Mad id, A / Uni e sidad 30, Leganés, 29811, Spain
b Ba celona Supe compu ing Cen e , C/ Jo di Gi ona, 29, Ba celona, 08034, Spain
