1/5 TURBULENT TRANSPORT IN AN AXIALLY ROTATING PIPE (i)
BY : CHAM - M R Malin
DATE : 1995 PHOENICS Version : 2.1
- Fully-developed 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 pressure-strain models:
- the ipm, ipy, ipc and qim models plus wall-reflection which
are linear in Reynolds stresses; and
- the ssg model which requires no wall-reflection model and is
quadratic in Reynolds stresses.
- Calculation performed with single-slab solver and 50 mesh cells.
- Calculations based on PHOENICS LIBRARY CASE T605.
2/5 TURBULENT TRANSPORT IN AN AXIALLY ROTATING PIPE (ii)
|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 KE-EP model produce essentially same Nu and f results for N=0.
- KE-EP model produces identical results for both values of N.
- All RSTM pressure-strain models produce essentially same Nu and f results.
3/5 ROTATING PIPE FLOW: Axial-velocity profiles.
4/5 ROTATING PIPE FLOW: Swirl-velocity profiles.
5/5 ROTATING PIPE FLOW: Turbulent shear-stress profiles.