Week 1- Mixing Tee

MIXING TEE

AIM: We have to set up steady-state simulations to compare the mixing effectiveness for a short Tee and a Long Tee.

OBJECTIVES:

• Velocity and temperature contour plots on the cut planes along and across the pipe.
• Velocity and temperature line plots along and across the length of the pipe.
• Perform Mesh independent study for any one case.
• Discuss the effect of length and momentum ratio on results.

Given conditions:

1. Hot inlet temperature is 36⁰C & the Cold inlet is at 19⁰
2. Use the k-epsilon and k-omega SST model for the test Cases.

• TEST CASES (i)
  • Short mixing tee with a hot inlet velocity of 3m/s.
  • Momentum ratio of 2, 4.
• TEST CASES (ii)
  • Short mixing tee with a hot inlet velocity of 3m/s.
  • Momentum ratio of 2, 4.

Where, Momentum ratio = velocity at cold inlet/velocity at hot inlet

RESULTS

	TEST CASE(i)				TEST CASE(ii)
	MR=2		MR=4		MR=2		MR=4
CELL COUNT	12583
AVG. OUTLET TEMP.
NO. OF ITERATIONS FOR CONVERGENCE