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Investigations on single-phase natural circulation loop dynamics part 1: Model for simulating start-up from rest

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Title Investigations on single-phase natural circulation loop dynamics part 1: Model for simulating start-up from rest
 
Creator NAVEEN, K
IYER, KN
DOSHI, JB
VIJAYAN, PK
 
Subject Natural circulation
Single-phase
Pseudo-conductivity
Instability
Natural convection
Mixed convection
CONVECTION HEAT-TRANSFER
MIXED CONVECTION
RECTANGULAR LOOP
FRICTION FACTOR
FLOW
BEHAVIOR
TUBES
TRANSIENT
STABILITY
 
Description Single-phase natural circulation loops are used in many industrial systems like nuclear reactors, geothermal systems, solar water heating systems and process industry. The present paper presents a 1-D model for simulating the startup from rest of water cooled single-phase natural circulation loops. A pseudo-conductivity model was developed previously by the authors to account for heat diffusion caused by local convection currents and the results of numerical simulation for loops having horizontal heater and horizontal cooler were presented. In the present study, the model has been used to simulate the start-up of loops having different heater and cooler orientations and the applicability of the model as a general tool for simulating start-up of rectangular natural circulation loops is assessed. The paper presents more insight into the behavior of pseudo-conductivity models developed to simulate start-up of these loops from state of zero flow. (C) 2014 Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2014-12-29T05:12:35Z
2014-12-29T05:12:35Z
2014
 
Type Article
 
Identifier PROGRESS IN NUCLEAR ENERGY, 76148-159
0149-1970
http://dx.doi.org/10.1016/j.pnucene.2014.05.017
http://dspace.library.iitb.ac.in/jspui/handle/100/17163
 
Language English