The current state of robotic technology is far from the goalof automated intelligent beings. in the industrial scenario where much of the current robot development has been appliedmost robots are little more than advanced numerical machines. limited feedback sensing and control have been identified… More

This proposal ddescribes an sbir project to establish an improved analyitcal technique in external and \ or internally ducted flow properties for hypersonic engine air linlets. the goal of this phase i project is to clearly categorize the distinguishing characteristics of published cfd algoorithm… More

The current state of robotic technology is far from the goal of automated intelligent being. in the industrial scenario where much of the current current robot developmenthas been applied, most robots are little more than advanced numerical machines. limited feedback sensing and control have been… More

This proposal describes a project to develop and examine a cfd numerical solution algorithm for the three-dimensional euler/navier-stokes equations that does not rely on a well-structured, body-fitted coordinate system for robustness. the specific application is for realistic configuration… More

Super accurate adaptive computational schemes for the analysis of fluid structure interaction and complex three-dimensional internal flows are to be developed. new petrov-galerkin finite element methods for solving the navier-stokes equations. coupled with the equations of motion of elastic ducts… More

This project focuses on the two most important issues of all of computational fluid dynamics: 1) how good are the numerical answers obtained in a computation? and 2) how can the best possible answers be obtained for a fixed and limited computational effort, budget, or computing capability? in… More

The mission of this phase i project is to develop a robust and accurate computer code for predicting incompressible transient turbulent flowfields using an integral (finite volume) technique. the code will be applicable to both external and internal flow geometries,will be constructed in a… More

The mission of this phase i project is completion of a truly innovative study to upgrade existing pns codes for computing highspeed, three-dimensional re-entry flowfields. the plan of action encompasses a thorough examination of the range of admissable cfd theories, to unequivacally compare strong… More

This project is devoted to the development of a unique collection of algorithms designed to resolve some of the most difficult problems of modern computational fluid dynamics: (1) the analysis of complex incompressible flows in arbitrary three-dimensional domains; (2) the analysis of complex… More

A new and innovative class of adaptive computational procedures is to be developed for the specific purpose of numerically-modeling complex flows inherent in advanced helicopter-blade designs. these procedures make use of mathematically consistent estimates of local numerical error, and… More

Today an overwhelming majority of cfd calculations are done with standard fixed grid finite difference methods. however, a simple calculation can establish that such methods cannot possibly exploit the full computing power of today's computing equipment nor can they deliver highly accurate… More

In contemporary computational fluid dynamics, finite difference or finite element grids are often generated usingstandard mesh generation techniques. the better mesh generation packages are capable of defining very fine meshesin areas where the analyst expects fine features of the flowneed to be… More

Accurate and efficient prediction of skin fiction and heating rates for superand hypersonic vehicles has long been a goal of computational fluid dynamics (cfd). the use of standard cfd methods to resolve the near-wall boundary layer (which is essential for good precitions of airfoil behavior) using… More

A general-purpose, solution-adaptive, finite-elements code that treats broad classes of incompressible flows has been developed. the code employs h-adaptive and p-enrichment algorithms that refine the structure of the mesh to optimize computations. the full potential for use of such smart algorithms… More

COMCO proposes to develop a new, meshless computational methodology for dynamic fracture simulation in fluid-structural interaction. Our approach is based on a new class of methods which eliminate all need for computational mesh of finite elements. This is accomplished by covering the… More