NDLI: An analytical study of reduced-gravity flow dynamics

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An analytical study of reduced-gravity flow dynamics

Content Provider	NASA Technical Reports Server (NTRS)
Author	Zich, J. L. Kramer, J. L. Bradshaw, R. D.
Copyright Year	1976
Description	Addition of surface tension forces to a marker-and-cell code and the performance of four incompressible fluid simulations in reduced gravity, were studied. This marker-and-cell code has a variable grid capability with arbitrary curved boundaries and time dependent acceleration fields. The surface tension logic includes a spline fit of surface marker particles as well as contact angle logic for straight and curved wall boundaries. Three types of flow motion were simulated with the improved code: impulsive settling in a model Centaur LH2 tank, continuous settling in a model and full scale Centaur LO2 tank and mixing in a Centaur LH2 tank. The impulsive settling case confirmed a drop tower analysis which indicated more orderly fluid collection flow patterns with this method providing a potential savings in settling propellants. In the LO2 tank, fluid collection and flow simulation into the thrust barrel were achieved. The mixing simulation produced good results indicating both the development of the flow field and fluid interface behavior.
File Size	2717205
Page Count	74
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19760017416
Archival Resource Key	ark:/13960/t1xd5p778
Language	English
Publisher Date	1976-04-01
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Heat Transfer Fuel Tanks Centaur Launch Vehicle Fluid Dynamics Gravitational Effects Liquid Oxygen Fluid Flow Computerized Simulation Microgravity Cryogenic Rocket Propellants 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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