Published December 15, 1986 | Version v1
Miscellaneous Restricted

Modelling of momentum transfer of axially parallel turbulent flow in lattices

Creators

Description

The author is concerned with the distribution of the velocity of the bypass medium determining heat transfer in fuel and heater rods. Models are presented which are capable of solving the Reynold equations for problem description. It can be seen that wall-parallel turbulent momentum transfer represents the decisive factor, and that it is the precise description of this factor that determines of the quality of the results. The study closes with comparative analysis of experiments by various authors with regular and shifted lattice arrangements. (HAG)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Der Autor beschaeftigt sich mit der, den Waermeuebergang bei Brenn- und Heizstaeben, bestimmenden Geschwindigkeitsverteilung des umstroemenden Mediums. Es werden Modelle vorgestellt, die in der Lage sind, die problembeschreibenden Reynoldschen Gleichungen zu loesen. Dabei zeigt es sich, dass der wandparallele turbulente Impulstransport die entscheidende Groesse darstellt, und die genaue Erfassung dieser Groesse die Guete des Ergebnisses ausmacht. Abschliessend werden Vergleichsrechnungen zu Experimenten verschiedener Autoren an regulaeren und verschobenen Gitteranordnungen durchgefuehrt. (HAG)

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Additional details

Additional titles

Original title (German)
Modellierung des Impulstransportes achsparalleler turbulenter Stroemungen in Stabgittern

Publishing Information

Imprint Pagination
176 p.
Report number
INIS-mf--12077

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
21036713
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS; S42: ENGINEERING;
Resource subtype / Literary indicator
Thesis
Descriptors DEI
DIAGRAMS; DIFFERENTIAL EQUATIONS; FLOW MODELS; FLOW RATE; FRICTION; FUEL ELEMENTS; HEAT EXCHANGERS; HEAT TRANSFER; MASS TRANSFER; PULSES; REYNOLDS NUMBER; TURBULENT FLOW; VISCOSITY; VORTEX FLOW; VORTICES
Descriptors DEC
ENERGY TRANSFER; EQUATIONS; FLUID FLOW; INFORMATION; MATHEMATICAL MODELS; REACTOR COMPONENTS