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Heat transfer, Asian research v.46 no.2, 2017년, pp.91 - 110  

Numerical Investigation of Forced Convection Conjugate Heat Transfer from Offset Square Cylinders Placed in a Confined Channel Covered by Solid Wall

Parthasarathy, Rajesh Kanna (Department of Mechanical Engineering, Velammal College of Engineering and Technology, Madurai, Tamil Nadu, India ) ; Mahadevan, Sivasubramanian (Department of Mechanical Engineering, Kalasalingam University, Srivilliputhur, Tamil Nadu, India ) ; Marimuthu, Uthayakumar (Department of Mechanical Engineering, Kalasalingam University, Srivilliputhur, Tamil Nadu, India ) ;
  • 초록  

    Flow over two isothermal offset square cylinders in a confined channel is simulated for different Reynolds numbers to disclose the forced convection heat transfer from the heated square cylinders to the ambient fluid. The spacing between the cylinder in the normal direction and the blockage ratio are fixed. The channel walls are covered by solid walls of thickness equal to the size of the cylinder and conjugate heat transfer is considered by including these walls. Heat transfer from the cylinders to the ambient fluid as well as that conducted within the solid wall through the conjugate interface boundary are investigated in connection with Reynolds number and are reported for both steady and periodic flows. Simulation is carried out for Reynolds number varying from 10 to 100 with air as the fluid. The onset of the vortex begins when the Reynolds number equals 48. The conjugate interface temperature declines when the Reynolds number grows. The isotherms in the solid wall show two dimensionality near the cylinder region.


  • 주제어

    laminar flow .   offset cylinder .   conjugate heat transfer .   Nusselt number.  

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