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ENERGETIKA

ISSN for PRINT: 0235-7208

Institutional price:	$109.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2004, Volume1

80 pages

Issue price - $29.00

EXPERIMENTAL INVESTIGATION OF THE EFFECT OF THE INCLINATION OF THE FLAT CHANNEL TURBULENT OPPOSING MIXED CONVECTION HEAT TRANSFER IN ITS BOTTOM WALL

Robertas Poskas
Lithuanian Energy Institute, Branduolinës inzinerijos problemø laboratorija, Breslaujos str. 3, LT-44403 Kaunas, Lithuania

Donatas Sabanskis
Lithuanian Energy Institute, Branduolinës inzinerijos problemø laboratorija, Breslaujos str. 3, LT-44403 Kaunas, Lithuania

ABSTRACT

Experimental investigation and analysis on the effect of the inclination of the flat channel on heat transfer in a flat channel with bottom wall heating (unstable density stratification) for turbulent mixed convection opposing flow conditions have been performed in the region of Re = 4 · 10³ − 6,6 · 10⁴, Gr_q = 4,4 · 10⁷ − 7,6 · 10¹⁰.
There are regimes with a sharp change of heat transfer along the channel as in the case of stable density stratification. This increase of heat transfer is related to the separation of the flow from the channel wall.
There is a tendency that under unstable density stratification the flow separates from the wall at higher Bo₂ values than under stable stratification.