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Effects of Feeding Mode and Inlet Area Ratio on Heating Characteristics in Dual-Inlet Swirl Tubes

Publish place: Journal of Applied Fluid Mechanics، Vol: 14، Issue: 3
Publish Year: 1400
Type: Journal paper
Language: English
View: 161

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Link to this Paper:
https://civilica.com/doc/1369358

Document National Code:

JR_JAFM-14-3_015

Index date: 5 January 2022

Effects of Feeding Mode and Inlet Area Ratio on Heating Characteristics in Dual-Inlet Swirl Tubes abstract

A preheating exchanger is developed for improving acidic water degassing. Reasonable optimization of dual-inlet swirl heating tubes is analyzed by computations of the flow and heat transfer. The comparisons of the swirl number and circumferential average Nusselt number between isobaric injection and isokinetic injection are performed. Inlet area ratios ranging from 0.1 to 0.9 exhibit an important influence on the flow phenomena and the heating performance. A lower value of inlet area ratio leads to the tendency for the fluid passing through inlet 2 to move upstream of inlet 2 and results in more vortex pairs between inlets 1 and 2. An inlet area ratio value of 0.5 exhibits the largest global average Nusselt number, normalized Nusselt number, and thermal performance factor. The optimized inlet area ratio is suitable for improving the degassing efficiency.

Effects of Feeding Mode and Inlet Area Ratio on Heating Characteristics in Dual-Inlet Swirl Tubes Keywords:

Preheating degassing , Dual , inlet swirl , Flow and heat transfer , Numerical simulations

Effects of Feeding Mode and Inlet Area Ratio on Heating Characteristics in Dual-Inlet Swirl Tubes authors

X. Xu

School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai ۲۰۰۲۳۷, P. R. China

J. Wang

School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai ۲۰۰۲۳۷, P. R. China

Q. Yang

State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai ۲۰۰۲۳۷, P. R. China

H. Liu

State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai ۲۰۰۲۳۷, P. R. China

H. Wang

State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai ۲۰۰۲۳۷, P. R. China