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[[Description_AC3-10|Description]] [[Test Data_AC3-10|Test Data]] [[CFD Simulations_AC3-10|CFD Simulations]] [[Evaluation_AC3-10|Evaluation]] [[Quality Review_AC3-10|Qulaity Review]] [[Best Practice Advice_AC3-10|Best Practice Advice]] [[Related UFRs_AC3-10|Related UFRs]]
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''Contributors: Alan Stevens - Rolls-Royce Marine Power, Engineering & Technology Division''
 
''Contributors: Alan Stevens - Rolls-Royce Marine Power, Engineering & Technology Division''
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Revision as of 10:20, 19 March 2009

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Description

Test Data

CFD Simulations

Evaluation

Best Practice Advice


Application Area 3: Chemical & Process, Thermal Hydraulics & Nuclear Safety

Application Challenge AC3-10

Abstract

This application challenge focuses on the prediction of pressure losses and head loss coefficients for water flowing in a Y-junction. A series of tests has been carried out under both convergent and divergent flow conditions, and at various splits of flow in the two minor branches. The flow rates used in the major branch covered an approximate Reynolds number range of 5x105 to 1.2x106.

The Y-junction has an included angle of 50 degrees between the two minor branches, and the internal geometry has been optimised.

Flow behaviour in pipe junctions is relevant to many industrial applications. At certain flow rate ratios the pressures in the Y-junction give rise to ‘negative’ differential pressures. CFD can provide an insight into the reasons behind this.

In this application challenge the design or assessment parameters (DOAPs), are the differential pressures between the legs of the Y-junction.


Contributors: Alan Stevens - Rolls-Royce Marine Power, Engineering & Technology Division


Front Page

Description

Test Data

CFD Simulations

Evaluation

Best Practice Advice