The development of a computational fluid dynamics (cfd) model based on variational principles and used to simulate aerodynamic flows is proposed. the cfd model will be designed to describe turbulent, multi-dimensional, unsteady flows, but the variational formulation will be cast to automatically… More

A computational fluid dynamics (cfd) analysis of ignition and blowout in gas turbine augmeners is proposed in order to improve our understanding of ignition and of methods of maintaining stable combusion. the interaction of aerodynamics and combustion chemistry is so complex that gas turbine… More

Existing models for determining plume induced launch stand pressure and thermal effects are too labor and computationally expensive to routinely apply to design launch stands and missile launchers. the types of codes utilized during the design of the kennedy launch stand included; an inviscid two… More

An improved heat transfer analysis for liquid rocket engine design will be developed by using state-of-the-art computational fluid dynamics (cfd) methodology to accurately describe the radiating, combusting flow and boundary conditions at and within combustion chamber walls and regeneratively cooled… More

Thermal loads created by the plumes of advanced solid rocketmotors are not predictable; such loads are currently obtained from experiment. test data are correlated by postulating plume temperature, shape, and emissivity; and heating rates are calculated with appropriate view factors from this… More

The rise of launch clouds to stabilization is forced by an altitude varying distribution of momention and buoyancy (temperature). In most of the plume, the temperature excess over that of the atmosphere is large and the buoyant force accelerates the launch products to "high" altitudes. The… More

SECA, Inc. with the assistance of AMROC, Inc. proposes to develop the methodology required to analytically predict the combustion efficiency of operational hybrid rocket motors from basic test data characteristic of the fuel employed. Such methodology is not currently available, and it is essential… More

SECA, Inc. proposes to develop a series of computational modules which describe real fluid thermodynamics and physical properties that are designed to be easily incorporated in computational fluid dynamics codes for the enhancing and the efficiency and use of such codes. The standard source of… More

An innovative method for integrating experimental design with computational flowfield methodology for developing advanced liquid rocket combustors is proposed. Despite dramatic advancements in computational fluid dynamics (CFD) and diagnostic instrumentation, rocket engine designers still rely on… More