TY - GEN
T1 - NUMERICAL SIMULATION OF A CANADIAN WELL WITH ONE CIRCUMFERENTIAL ROW OF INTERNAL VORTEX GENERATORS
AU - Kharoua, Nabil
AU - Semmari, Hamza
AU - Haroun, Mehdi
AU - Korichi, Houssem
AU - Islam, Md
N1 - Funding Information:
The authors would like to thank Dr Messaoud Badache, from CanmetEnergy-Natural Resources Canada, for his assistance and valuable tips. Authors are also grateful to Khalifa University of Science and Technology, Abu Dhabi for the financial support through grant: CIRA 2020-057.
Publisher Copyright:
© 2022 American Society of Mechanical Engineers (ASME). All rights reserved.
PY - 2022
Y1 - 2022
N2 - Canadian wells are used for heating and cooling in residential buildings, agriculture and industry. They rely on the quasi-stable underground temperature at a certain depth throughout the year. One way to enhance the performance of this type of heat exchangers, is to implement internal Vortex Generators (VGs). The VGs contribute in disrupting the thermal boundary layer, intensifying turbulence and increasing the heat transfer coefficient. Series of numerical simulations, using ANSYS FLUENT, were conducted to mimic the variable seasonal operational conditions of Canadian Wells during the year. One circumferential row of parallelepiped Vortex Generators was implemented in a real U-shaped tube Canadian Well geometry. The yearly ground and underground temperatures were implemented as sinusoidal functions of time and depth. The VGs were placed immediately downstream of the first bend close to the inlet. The Reynolds number was in the range 14975-42785. The ambient conditions were considered for the city of Constantine (Algeria) at an altitude of 600m over the sea level. The VGs yielded an improvement of up to 8% of the heat transfer coefficient for different Reynolds numbers. The bend, upstream of the VGs, and the wake, downstream of them, play a key role in affecting the heat transfer locally.
AB - Canadian wells are used for heating and cooling in residential buildings, agriculture and industry. They rely on the quasi-stable underground temperature at a certain depth throughout the year. One way to enhance the performance of this type of heat exchangers, is to implement internal Vortex Generators (VGs). The VGs contribute in disrupting the thermal boundary layer, intensifying turbulence and increasing the heat transfer coefficient. Series of numerical simulations, using ANSYS FLUENT, were conducted to mimic the variable seasonal operational conditions of Canadian Wells during the year. One circumferential row of parallelepiped Vortex Generators was implemented in a real U-shaped tube Canadian Well geometry. The yearly ground and underground temperatures were implemented as sinusoidal functions of time and depth. The VGs were placed immediately downstream of the first bend close to the inlet. The Reynolds number was in the range 14975-42785. The ambient conditions were considered for the city of Constantine (Algeria) at an altitude of 600m over the sea level. The VGs yielded an improvement of up to 8% of the heat transfer coefficient for different Reynolds numbers. The bend, upstream of the VGs, and the wake, downstream of them, play a key role in affecting the heat transfer locally.
KW - Canadian wells
KW - FLUENT
KW - Vortex generators
UR - http://www.scopus.com/inward/record.url?scp=85139769992&partnerID=8YFLogxK
U2 - 10.1115/FEDSM2022-87012
DO - 10.1115/FEDSM2022-87012
M3 - Conference contribution
AN - SCOPUS:85139769992
T3 - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM
BT - Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC)
T2 - ASME 2022 Fluids Engineering Division Summer Meeting, FEDSM 2022
Y2 - 3 August 2022 through 5 August 2022
ER -