The need exists for an efficient hypersonic inlet flow analysis code that will calculate both external and internal flow fields including viscus effects. the first objective of the proposed effort is to develop a prototype code baded on a parabolized navier stokes formulation with a 3d pressure… More

An efficient computational method is proposed for modeling the complex physical phenomena occuring in high energy continuous wave laser flow fields. these flows typically contain boundary layers, mixing layers, wakes, and embedded shock waves. it is difficult to generate a mesh aprior which will… More

The use of computer codes that simulate fluid flows is becoming increasingly important in the design of aircraft components. the current state of the technology of numerical simulation of viscous fluid flows is sufficient for developing engineering tools for flow analysis of various types of complex… More

The need exists for a cost effective 3d flow analysis code that will accurately model the viscous flow fields for hypersonic vehicles including flow features that are activated for thermal protection and aerocontrol. the proposed effort will result in a 3d navier-stokes code that is optimized for… More

Advanced short takeoff/vertical landing aircraft are designed to use exhaust jets to directly increase lift. being able to numerically model the flow fields involved in these designs would greatly improve the design process. theproposed effort is to develop a cost effective flow analysistool for… More

Computational fluid dynamics (cfd) codes have become important design and analysis tools for engineers, particularly in the aerospace industry. cfd codes, however, are severely limited by the computing resources of present-day supercomputers. it is estimated that a three order-of-magnitude increase… More

A grid adaption procedure is proposed for a recently developed class of navier-stokes solvers which use relaxation rather than approximate factorization to solve the linear system of equations. the objective of the proposed work is the implicit coupling of an existing two-dimensional navier-stokes… More

Several aerospace vechicles are currently being considered that have a significant portion of their flight path in the upper reaches of the atmosphere. the flow about these vehicles is in the continuum-transition regime where the standard equations of continuum flow, the navier-stokes equations,… More

Advanced short takeoff/vertical landing aircraft are designed to use exhaust jets directly to increase lift. being able to model numerically the flow fields involved in these designs would greatly improve the design process. this project will develop a cost-effective flow analysis tool for modeling… More

Computational fluid dynamics (cfd) methods generate vast amounts of numerical data that must be displayed graphicallyfor use. current graphical computer software programs can display data only on lines or on surfaces defined in the computational grid. cfd software users desire to display cfd data on… More