Title of article
FlowandpressuredropfluctuationsinaverticaltubesubjecttolowfrequencyoscillationsOriginalResearchArticle
Author/Authors
RajashekharPendyala، نويسنده , , SreenivasJayanti، نويسنده , , A.R.Balakrishnan، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
10
From page
178
To page
187
Abstract
Heattransferandotherequipmentmountedonoff-shoreplatformsmaybesubjectedtolowfrequencyoscillations.Theeffectoftheseoscillations,typicallyinthefrequencyrangeof0.1–1Hz,ontheflowrateandpressuredropinaverticaltubehasbeenstudiedexperimentallyinthepresentwork.A1.75m-longverticaltubeofinnerdiameter0.016mwasmountedonaplateandthewholeplatewassubjectedtooscillationsintheverticalplaneusingamechanicalsimulatorcapableofprovidinglowfrequencyoscillationsintherangeof8–30cycles/minatanamplitudeof0.125m.TheeffectoftheoscillationsontheflowrateandthepressuredrophasbeenmeasuredsystematicallyintheReynoldsnumberrange500–6500.TheinducedflowratefluctuationswerefoundtobedependentontheReynoldsnumberwithstrongerfluctuationsatlowerReynoldsnumbers.Theeffectivefrictionfactor,basedonthemeanpressuredropandthemeanflowrate,wasalsofoundtobehigherthanexpected.CorrelationshavebeendevelopedtoquantifythisReynoldsnumberdependence.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
894992
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