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1/5 TURBULENT TRANSPORT IN AN AXIALLY ROTATING PIPE (i)
BY : CHAM  M R Malin
DETAILS :
 Fullydeveloped flow and heat transfer in an axially rotating pipe.
 The swirl is driven by the pipe wall rotating around the pipe axis.
 Reynolds no Re=5E4 Prandtl no = 0.71 Swirl no = 0.5
 Constant wall heat flux applied at the pipe wall.
 Turbulence represented via RSTM with various pressurestrain models:
 the ipm, ipy, ipc and qim models plus wallreflection which
are linear in Reynolds stresses; and
 the ssg model which requires no wallreflection model and is
quadratic in Reynolds stresses.
 Calculation performed with singleslab solver and 50 mesh cells.
 Calculations based on PHOENICS LIBRARY CASE T605.
2/5 TURBULENT TRANSPORT IN AN AXIALLY ROTATING PIPE (ii)
MAIN RESULTS:

Re=1.E4  Re=2.E4  Re=5.E4 
 DATA  RSTM  DATA  RSTM  DATA  RSTM 
N = 0  .032  .030  .026  .025  .021  .020 
N = 0.5  .026  .025  .022  .020  .017  .016 
Table 1: Friction factor f versus Re and N
Re=1.E4 Re=2.E4 Re=5.E4
DATA RSTM DATA RSTM DATA RSTM
N = 0 30 34 52 56 103 109
N = 0.5 24 27 44 45 87 90
Table 2: Nusselt number Nu versus Re and N
 RSTM and KEEP model produce essentially same Nu and f results for N=0.
 KEEP model produces identical results for both values of N.
 All RSTM pressurestrain models produce essentially same Nu and f results.
3/5 ROTATING PIPE FLOW: Axialvelocity profiles.
4/5 ROTATING PIPE FLOW: Swirlvelocity profiles.
5/5 ROTATING PIPE FLOW: Turbulent shearstress profiles.