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ReserarchID
5Z59U
Crossref Journal DOI 10.17406/gjre
Print ISSN 0975-5861
e-ISSN 2249-4596
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This paper attempted to assess the attitudes of students in
Advances in technology have created the potential for a new
Inclusion has become a priority on the global educational agenda,
Numerical analysis was performed to investigate the characteristics of the laminar fluid flow around an array of 3D protruding heaters mounted on the bottom substrate of a parallel plane channel using the ANSYS/Fluent® 14.0 commercial software. The fluid flow was considered to have constant properties under steady state conditions. In the channel inlet, the velocity profile was uniform. This problem is associated with forced flow over the electronic components mounted on printed circuit boards. The conservation equations and their boundary conditions were numerically solved in a single domain through a coupled procedure. The discretization of the equations was based on the Control Volumes Method. The algorithm SIMPLE was used to solve the pressure-velocity couple. Due to the non-linearity of the momentum equation, the correction of the velocity components and the pressure were under-relaxed to prevent instability and divergence. After a study of the computational mesh independence, the numerical results were obtained, displayed as a 3D non-uniform mesh with 212,670 control volumes. This computational mesh was more concentrated near the solid-fluid interface regions due to the larger primitive variable gradients in these regions. An investigation was done on the effects of the Reynolds numbers where the Reynolds numbers ranged from 100 to 300 and was dependent on the heights of the protruding heaters. The main characteristics of the fluid flow consisted of a small recirculation upstream of the heaters, the formation of horseshoe vortices around the protruding heaters’ side walls and a large recirculation region downstream of the heaters.
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