Examination of wall functions for a Parabolized Navier-Stokes code for supersonic flow
- New Mexico Univ., Albuquerque, NM (United States). Dept. of Mechanical Engineering
Solutions from a Parabolized Navier-Stokes (PNS) code with an algebraic turbulence model are compared with wall functions. The wall functions represent the turbulent flow profiles in the viscous sublayer, thus removing many grid points from the solution procedure. The wall functions are intended to replace the computed profiles between the body surface and a match point in the logarithmic region. A supersonic adiabatic flow case was examined first. This adiabatic case indicates close agreement between computed velocity profiles near the wall and the wall function for a limited range of suitable match points in the logarithmic region. In an attempt to improve marching stability, a laminar to turbulent transition routine was implemented at the start of the PNS code. Implementing the wall function with the transitional routine in the PNS code is expected to reduce computational time while maintaining good accuracy in computed skin friction.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States); New Mexico Univ., Albuquerque, NM (United States). Dept. of Mechanical Engineering
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6547602
- Report Number(s):
- SAND-93-0878C; CONF-9304118--1; ON: DE93011590
- Country of Publication:
- United States
- Language:
- English
Similar Records
Accurate, stable, explicit, parabolized navier-stokes solver for high speed flows
Implementing a parabolized Navier-Stokes flow solver on the Cray T3D
Related Subjects
420400 -- Engineering-- Heat Transfer & Fluid Flow
665000* -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
BOUNDARY LAYERS
COMPUTER CODES
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUID FLOW
FUNCTIONS
LAYERS
NAVIER-STOKES EQUATIONS
P CODES
PARTIAL DIFFERENTIAL EQUATIONS
SUPERSONIC FLOW
TURBULENCE
WALLS