Author(s)

H. Olgun, A. Ulkii & E. Demirci

Abstract

Free jet analysis from nozzles of cross-flow turbine H. Olgun, A. Ulkii, E. Demirci Department of Mechanical Engineering, Karadeniz Technical University, 61080 Trabzon, Turkey ABSTRACT The flow from nozzles is calculated numerically by using the boundary element method. The solutions from this method have been compared with the results obta- ined from electrical analogy method for two different shapes of nozzles. Flow visulation studies for these nozzles have been carried out and the trajectories of the flow have been observed and photographed. These trajectories have been compared with the numerical solutions. It has been found out that the numerically obtained free jets from these nozzles are good agree- ment with those of the electrical analogy method, viewing and photography techniques. In addition, the effects of three different types of nozzles on the efficiency of the cross-flow turbine have been expe- rimentally investigated. NOMENCLATURE Og,au,ciL : flow angle

Keywords