%0 Journal Article %T EXPERIMENTAL AND NUMERICAL STUDY OF A TURBULENT AXISYMMETRIC JET IMPINGING ONTO A CIRCULAR CYLINDER IN OFFSET AND NON-OFFSET SITUATIONS %J Iranian Journal of Science and Technology Transactions of Mechanical Engineering %I Shiraz University %Z 2228-6187 %D 2013 %\ 04/01/2013 %V 37 %N 1 %P 63-70 %! EXPERIMENTAL AND NUMERICAL STUDY OF A TURBULENT AXISYMMETRIC JET IMPINGING ONTO A CIRCULAR CYLINDER IN OFFSET AND NON-OFFSET SITUATIONS %K impinging jet %K axisymmetric jet %K offset/non-offset impinging %K circular cylinder %R 10.22099/ijstm.2013.1466 %X In this study, an experimental and numerical analysis is done to study the flowcharacteristics of an offset and non-offset axisymmetric jet impingement on a circular cylinder.The purpose of this study is investigation of the behavior of the cutting gas jets and finding theoptimum distance between nozzle and cylinder to achieve maximum cutting performance. Finitevolume approach is used to solve the governing equations for a turbulent, incompressible jetnumerically. According to the literature the suitable turbulence model for this purpose is realizablek-ε. Velocity and pressure fields around the cylinder and pressure and shear stress distribution onthe cylinder surface are determined for various cases. Also, some experiments are done to validaterepeatability of experiments and numerical results. Comparisons between numerical results andexperimental measurements validate the accuracy of numerical results. Also, results show that ifthe horizontal distance between the nozzle outlet and the stagnation point of cylinder is 2.5D, theshear stress on the cylinder surface has maximum value. Therefore in this situation jet has amaximum performance in cutting procedure. %U https://ijstm.shirazu.ac.ir/article_1466_809eaf8b5ff3419a3f2810aae4c21a00.pdf