Numerical Modelling of Wind Patterns around a Solar Parabolic Trough Collector
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 4
Abstract
Solar based energy systems are now becoming very popular nowadays. Solar parabolic trough collectors are widely used for solar heating and solar thermal power plant. One aspect that is very important is the exact determination of drag force acting on the systems. To calculate drag force, drag coefficient, which is always associated with a particular area, is required. This drag coefficient can be determined by experimentally or by numerical simulation. This study reports on numerical predictions of drag coefficient, velocity and pressure fields in steady flow around a solar parabolic trough collector. Also the wind load acting on the collector is determined for each position of trough. In this paper drag coefficients are evaluated for different pitch angles (0o to 180o) of parabolic trough using the computational fluid dynamics (CFD) software for wind velocity of 12m/s. Also for 0o pitch angle, drag coefficient is calculated varying wind velocity from 8m/s to 18m/s. It is found that maximum drag coefficient is 1.71 at 0opitch angle and drag coefficient remains constant for wind velocity range 8m/s to 18m/s. The present study has established that commercially available software like can provide a reasonable good solution of complicated flow structures.
Authors and Affiliations
Mahesh Dundage
Keywords
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