@article { author = {Kumar, R and Saranprabhu, M. K}, title = {Experimental Study on Flow Characteristics Around Twin Wind Blades (RESEARCH NOTE)}, journal = {International Journal of Engineering}, volume = {31}, number = {5}, pages = {820-825}, year = {2018}, publisher = {Materials and Energy Research Center}, issn = {1025-2495}, eissn = {1735-9244}, doi = {}, abstract = {In the current study, twin wind blades are designed, fabricated and the effect of various gap ratio (g*) at various angle of attacks (α) on a next to each other twin wind blades are examined in an open-channel wind tunnel. Aerodynamic forces and moments are determined by using three-constraint force balancer. For gap ratio of zero, the aerodynamic attributes are like those of a solitary wind blade edge. As g* increases, these two wind blades actuate the vertical wake to stage vortex shedding modes. With further increment in g*, the wake stream pattern was like those behind a solitary wind blade. For a solitary wind blade, the maximum lift is found to be at α = 30. The pitching moment increases with α. The impact of upper aerofoil blade on the lower one diminished as g* increases.}, keywords = {rotor,Flow characterization,Aerodynamic Performance,CFD Investigation}, url = {https://www.ije.ir/article_73185.html}, eprint = {https://www.ije.ir/article_73185_ca170f46a2e37aeb5db7c7ec951dc9fc.pdf} }