This proposal is for a study of the feasibility of adaptive grid algorithms for implementation, refinement and incorporation into an existing time dependent three dimensional navier-stokes computer model, the raven code. the study will involve assessment and/or extension of existing adaptive grid… More

This proposal is for a design study for the development of a computer code for three dimensional transient flow prediction. the computer code will be capable of accurately predicting incompressible transient turbulent flow fields using the finite volume technique. the code will be applicable to… More

Algorithms will be developed for the automated design optimization of physical systems (models) governed by partial differential equations (pde's) in two and three dimensions. the immediate motivation is the problem of electrode design optimization for lasers and switches. this work will build on… More

A user-friendly computer code will be developed to calculate the unsteady and highly 3-d complex flowpaths in exhaust diffusers of modern marine gas turbines, including pressure losses and nonuniform flow losses. the vax-vms code will be based upon an existing 3-d time-dependent navier-stokes code… More

A fundamental approach is proposed to modern lubrication problems, including thermohydrodynamics problems, via computer simulation of the full nonlinear, three-dimensional, time-dependent navier-stokes equations, i.e. via modern computational fluid dynamics (cfd). the approach is capable of… More

Numerical grid-generation algorithms are becoming more critical due to the need for detailed modeling of the geometry of the physical domain and as part of solution-adaptive algorithms. current planar grid generation algorithms are not robust because they frequently produce skewed or folded grids.… More

Computational algorithms and code will be developed for calculating unsteady compresible 3-d viscous flow and retreating-blade dynamic stall on modern high-performance heliopter rotors. the algorithm development will start from an existing 3-d time dependent viscous compressible code already used… More

Computational algorithms and codes will be tailored specifically to the Air Force's needs in groundwater flow and pollutant transport as required in Environmental Engineering. The project will build heavily on previous and ongoing Ecodynamics work for Sandia Laboratories on the Waste Isolation Pilot… More

The objective of the proposed program is to develop, demonstrate and validate a three-dimensional, time-dependent, compressible Navier-Stokes program for predicting dynamic stall. The foundation of the program is an existing 3-D program that has been developed under prior SBIR funding for… More