
What is ISAAC?
ISAAC (Integrated Solution Algorithm for Arbitrary Configurations)
is a compressible Euler/NavierStokes computational fluid dynamics code.
ISAAC includes the capability of calculating the Euler equations
for inviscid flow or the NavierStokes equations for viscous flows.
ISAAC uses a domain decomposition structure to accomodate complex
physical configurations.
ISAAC can calculate either steadystate or time dependent flow.
ISAAC was designed to test turbulence models.
Various two equation turbulence models,
explicit algebraic Reynolds stress models,
and full differential Reynolds stress models are implemented in ISAAC.
Several test cases are documented in the User's Guide.
License
ISAAC was developed under contract to the NASA Langley Research Center
while the author was employed by Analytical Services and Materials, Inc.
ISAAC is made available WITH NO WARRANTY under the terms of the
ISAAC Public Source License.
Publications using ISAAC
The following is a list of several publications using the ISAAC code.
 Morrison, J. H.,
Flux Difference Split Scheme for Turbulent Transport Equations,
AIAA Paper 905251, October 1990.
 Morrison, J. H.,
A Compressible NavierStokes Solver with TwoEquation and
Reynolds Stress Turbulence Closure Models,
NASA CR4440, May 1992.
 Morrison, J. H. and Korte, J. J.,
Implementation of Vigneron's Streamwise Pressure Gradient
Approximation in Parabolized NavierStokes Equations,
AIAA Journal, Vol. 30, No. 12, November 1992.
 Morrison, J. H., Gatski, T. B., Sommer, T. P.,
Zhang, H. S., and So, R. M. C.,
Evaluation of a NearWall Turbulent Closure Model in Predicting
Compressible Ramp Flows,
NearWall Turbulent Flows,
Eds. R. M. C. So, C. G. Speziale, and B. E. Launder,
Elsevier Science Publishers B.V., 1993.
 Chenault, C. F.,
Development and Implementation of a Scramjet Cycle Analysis Code
With a FiniteRateChemistry Combustion Model For Use on
A Personal Computer,
Masters Thesis, Air Force Institute of Technology,
December 1993. AFIT/GAE/ENY/93D7
 Abid, R., Gatski, T. B., and Morrison, J. H.,
Assessment of PressureStrain Models in Predicting Compressible,
Turbulent Ramp Flows,
AIAA Journal, Vol. 33, No. 1, January 1995.
 Vahala, G., Vahala, L., Morrison, J., Krasheninnikov, S., and Sigmar, D.,
Effects of Neutral ThreeDimensional Turbulence in the Gas
Blanket Regime for Divertors,
Physics Letters A, Vol. 205, 1995, pp. 266273.
 Vahala, G., Vahala, L., Morrison, J., Krasheninnikov, S., and Sigmar, D.,
Toroidal Wall Heat Flux and Conductivity Profiles Due to Neutral
3D Turbulence in the Gas Blanket Regime for Divertors,
Contrib. Plasma Phys., Vol. 36, No. 2/3, 1996, pp. 304308.
 Gatski, T. B.,
Prediction of Airfoil Characteristics with Higher Order
Turbulence Models,
NASA Technical Memorandum 110246, April, 1996.
Abstract 
PDF 
Postscript
 Gatski, T. B.,
Airfoil Stall Prediction Using a TwoEquation and an
Explicit Algebraic Stress Model,
Advances in Turbulence VI,
Eds. Gavrilakis, S., Machiels, L., and Monkewitz, P. A.,
Kluwer Academic Publishers, 1996.
 Ristorcelli, J. R. and Morrison, J. H.,
The FavreReynolds Average Distinction and a Consistent
Gradient Transport Expression for the Dissipation,
Physics of Fluids, Vol. 8, No. 9, September 1996.
 Abid, R., Morrison, J. H., Gatski, T. B.,
and Speziale, C. G.,
Prediction of Aerodynamic Flows with a New Explicit Algebraic
Stress Model,
AIAA Journal, Vol. 34, No. 12, December 1996.
 Vahala, G., Vahala, L., Morrison, J., Krasheninnikov, S., and Sigmar, D.,
Ke Compressible 3D Neutral Fluid Turbulence Modelling
of the Effect of Toroidal Cavities on FlameFront Propagation
in the GasBlanket Regime for Tokamak Divertors,
J. Plasma Physics, Vol. 57, Part 1, 1997, pp. 155173.
 Woodruff, S. L., Morrison, J. H., and Hussaini, M. Y.,
Evaluation of Several Turbulence Models in a MultipleElement
Airfoil Computation,
AIAA Paper 980327, January 1998.
 Chenault, C. F.,
Analysis of Turbulence Models as Applied to Two and
ThreeDimensional Injection Flows,
Ph.D. Dissertation, Air Force Institute of Technology,
March 1998. AFIT/DS/ENY/98M01
 Chenault, C. F., Beran, P. S., and Bowersox, R. D. W.,
SecondOrder Reynolds Stress Turbulence Modeling of
ThreeDimensional Oblique Supersonic Injection,
AIAA Paper 983425, July 1998.
 Chenault, C. F. and Beran, P. S.,
KEpsilon and Reynolds Stress Turbulence Model Comparisons
for TwoDimensional Injection Flows,
AIAA Journal, Vol. 36, No. 8, pp. 14011412, August 1998.
 Morrison, J. H.,
Numerical Study of Turbulence Model Predictions for the
MD 30P/30N and the NHLP2D ThreeElement Highlift Configurations,
NASA CR1998208967, December 1998.
Abstract 
PDF 
Postscript
 Chenault, C. F., Beran, P. S., and Bowersox, R. D. W.,
Numerical Investigation of Supersonic Injection Using a
ReynoldsStress Turbulence Model,
AIAA Journal, Vol. 37, No. 10, October 1999.
 Woodruff, S. L., Seiner, J. M., Hussaini, M. Y., and Erlebacher, G.,
Evaluation of TurbulenceModel Performance in Jet Flows,
AIAA Journal, Vol. 39, No. 12, December 2001.
 Morrison, J. H., Panaras, A. G., Gatski, T. B.,
and Georgantopoulos, G. A.,
Analysis of Extensive CrossFlow Separation using HigherOrder
RANS Closure Models,
AIAA Paper 20033532, June 2003.
Abstract 
PDF 
Postscript
 Poroseva, S. V., Hussaini, M. Y., and Woodruff, S. L.,
On Improving the Predictive Capability of Turbulence Models Using
Evidence Theory,
AIAA Paper 20051096, January 2005.
