Paper Information

Title:  SECOND LAW ANALYSIS OF LAMINAR FLOW IN A ROTATING CURVED DUCT
Type: PAPER
Author(s): SOLTANIPOUR HOSSEINALI,CHOUPANI PARISA,CHOUPANI SADEGH
 
 
 
Name of Seminar: INTERNATIONAL CONFERENCE OIL, GAS, PETROCHEMICAL AND POWER PLANT
Type of Seminar:  CONFERENCE
Sponsor:  SHERKATE TAVONI AMOZESHI PAZHOHESHI VESTA
Date:  2012Volume 1
 
 
Abstract: 

IN THIS PAPER ENTROPY GENERATION IN A ROTATING CURVED DUCT ARE STUDIED NUMERICALLY. THE GOVERNING EQUATIONS (CONTINUITY, MOMENTUM, AND ENERGY), ASSUMING STEADY, 3D AND LAMINAR FLOW, HAVE BEEN SOLVED USING FINITE VOLUME METHOD. THE EFFECTS OF DEAN NUMBER AND FORCE RATIO (THE RATIO OF CORIOLIS TO CENTRIFUGAL FORCES) ON THE ENTROPY GENERATION DUE TO FRICTION AND HEAT TRANSFER IRREVERSIBILITY AND ALSO OVERALL ENTROPY GENERATION ARE PRESENTED. RESULTS SHOW THAT FOR ANY FIXED DEAN NUMBER, THE MINIMAL FRICTIONAL ENTROPY GENERATION OCCURS WHEN THE CORIOLIS AND THE CENTRIFUGAL FORCE HAS THE SAME VALUE BUT IN THE OPPOSITE DIRECTION. THERE IS A FORCE RATIO WITH MAXIMUM HEAT TRANSFER IRREVERSIBILITY WHICH DEPENDS ON DEAN NUMBER. MOREVER FOR EACH CASE WITH SPECIFIC DEAN NUMBER, THERE EXISTS AN OPTIMUM FORCE RATIO WITH MINIMUAL TOTAL ENTROPY GENERATION. AS DEAN NUMBER INCREASES, A CLEAR TREND CAN BE FOUND THAT ENTROPY GENERATION DUE TO HEAT TRANSFER GRADUALLY DECREASES AND ENTROPY GENERATION DUE TO FRICTION INCREASES.

 
Keyword(s): ROTATING CURVED DUCT, ENTROPY GENERATION, DEAN NUMBER, IRREVERSIBILITY, CORIOLIS FORCE
 
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