Accession Number : AD0757724

Title :   A Quasi-Analytical Method for the Calculation of Particle Trajectories,

Corporate Author : CINCINNATI UNIV OHIO DEPT OF AEROSPACE ENGINEERING

Personal Author(s) : Grant,G. ; Tabakoff,W.

Report Date : FEB 1973

Pagination or Media Count : 71

Abstract : The equation of motion of a sand particle under the influence of aerodynamic drag has been developed in the inertial coordinate system. The method of solution presented is very easy to use in that only one first order differential equation has to be solved. The equation of motion has been integrated and solved for the special cases of one-dimensional steady flow and one-dimensional accelerating flow as well as the general case of two or three-dimensional accelerating flow. The computerized models of these three problems are presented along with solutions of example problems. High speed movies were taken of sand particles which had been accelerated in a specially designed tunnel. These results demonstrated the extreme accuracy of this method of solution. (Author)

Descriptors :   (*PARTICLE TRAJECTORIES, EQUATIONS OF MOTION), (*FLUID FLOW, EQUATIONS OF MOTION), (*SAND, PARTICLE TRAJECTORIES), REYNOLDS NUMBER, NUMERICAL INTEGRATION, NUMERICAL ANALYSIS, EROSION, COMPUTER PROGRAMS, NONLINEAR DIFFERENTIAL EQUATIONS, FLOW FIELDS, DRAG

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE