NDLI: Hydrodynamic water impact. [apollo spacecraft waterlanding

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Hydrodynamic water impact. [apollo spacecraft waterlanding

Content Provider	NASA Technical Reports Server (NTRS)
Author	Kettleborough, C. F.
Copyright Year	1972
Description	The hydrodynamic impact of a falling body upon a viscous incompressible fluid was investigated by numerically solving the equations of motion. Initially the mathematical model simulated the axisymmetric impact of a rigid right circular cylinder upon the initially quiescent free surface of a fluid. A compressible air layer exists between the falling cylinder and the liquid free surface. The mathematical model was developed by applying the Navier-Stokes equations to the incompressible air layer and the incompressible fluid. Assuming the flow to be one dimensional within the air layer, the average velocity, pressure and density distributions were calculated. The liquid free surface was allowed to deform as the air pressure acting on it increases. For the liquid the normalized equations were expressed in two-dimensional cylindrical coordinates. The governing equations for the air layer and the liquid were expressed in finite difference form and solved numerically. For the liquid a modified version of the Marker-and-Cell method was used. The mathematical model has been reexamined and a new approach has recently been initiated. Essentially this consists of examining the impact of an inclined plate onto a quiesent water surface with the equations now formulated in cartesian coordinates.
File Size	514063
Page Count	24
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19740011802
Archival Resource Key	ark:/13960/t9j43hx40
Language	English
Publisher Date	1972-03-01
Access Restriction	Open
Subject Keyword	Fluid Mechanics Impact Hydrodynamics Spacecraft Landing Mathematical Models Water Landing Equations of Motion Apollo Spacecraft Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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