On the Setup of a Test Bench for Predicting Laminar-to-Turbulent Transition on a Flat Plate
On the Setup of a Test Bench for Predicting Laminar-to-Turbulent Transition on a Flat Plate作者机构：Institute for Thermal Turbomachinery and Machine Dynamics Graz University of Technology Inffeldgasse 25/A Graz 801 O Austria
出 版 物：《Journal of Energy and Power Engineering》 (能源与动力工程（美国大卫英文）)
年 卷 期：2016年第10卷第7期
页 面：411-424页
学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）]
主 题：Boundary layer transition computational fluid dynamics Preston tube thermographic camera flat plate boundary layers.
摘 要：At turbomachinery relevant flow conditions the boundary layers are often transitional with laminar-to-turbulent transition occurring. The characteristics of the main flow can depend highly on the state of the boundary layer. Therefore it can be vitally important for the designer to understand the process of laminar-to-turbulent transition and to determine the position and length of the transitional region. In this paper the flow over a flat plate is experimentally studied in order to investigate and better understand transitional flow. Preston tube measurements as well as a thermographic camera system were performed for two different inlet velocities in order to determine the position of the transitional zone. The results of the experiment are compared to numerical flow solutions using a common transition model to determine its capability. The simulation has been performed with the two commercial codes CFX and Fluent by Ansys and an in-house code called LINARS. As a result of this study, a better understanding of the experimental and numerical methods for determining transition shall be given.
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