Title :
Numerical investigation of flow around a triangle cylinder using a modified Gao-Yong turbulence model
Author :
He Dong ; Zhiqiang Li ; Ge Gao ; Zhong Shi
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Aero-Engine Aero-thermodynamics, Beijing Univ. of Aeronaut. & Astronaut., Beijing, China
Abstract :
The unsteady flow around a triangle cylinder was simulated using a modified Gao-Yong turbulence model based on the unilateral statistical average method. The numerical method used in this simulation is an unstructured staggered mesh scheme. The computational results show that the modified Gao-Yong turbulence model can successfully simulate vortex shedding characteristics. The Strouhal number and time-averaged velocity profiles also agree better with experiments than that of the original Gao-Yong turbulence model.
Keywords :
external flows; flow simulation; numerical analysis; turbulence; vortices; Strouhal number; modified Gao-Yong turbulence model; numerical method; time-averaged velocity profiles; triangle cylinder; unilateral statistical average method; unsteady flow; unstructured staggered mesh scheme; vortex shedding characteristics; Computational modeling; Educational institutions; Equations; Mathematical model; Numerical models; Predictive models; Viscosity; negative viscosity; triangle cylinder flow; turbulence model; unilateral statistical average; unsteady turbulent flow;
Conference_Titel :
Mechatronic Sciences, Electric Engineering and Computer (MEC), Proceedings 2013 International Conference on
Conference_Location :
Shengyang
Print_ISBN :
978-1-4799-2564-3
DOI :
10.1109/MEC.2013.6885553
