Journal of Flow Visualization and Image Processing

ISSN for PRINT: 1065-3090

For Online Access

Best Paper Award Selection - Editorial Board Site

2006, Volume13

Issue 4

118 pages

DOI: 10.1615/JFlowVisImageProc.v13.i4

Issue price - $154.00

Jr-Ming Miao
Department of Mechatronic, Energy and Aerospace Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan, Taiwan 335, R.O.C.

Chen-Yuan Wu
Graduate School of Defense Science Studies, Chung Cheng Institute of Technology, National Defense University, Taoyuan, Taiwan 335, Republic of China

Chang-Hsien Tai
Department of Vehicle Engineering National Pingtong University of Science and Technology, Pingtung 912, Taiwan, R.O.C.

Tip leakage flows are a source of aerodynamic inefficiency and high thermal loading near blade tips. This work simulates the complex streamwise vortical structure a turbine shroud with blade tip clearance for the stationary linear cascade. Compressible Navier−Stokes equations are solved by the control volume method with the upwind Roe's scheme and the total variation diminishing (TVD) scheme. The code is validated by selecting a model of the VKI rotor to simulate the developing boundary-layer flow structure. Numerical results closely correspond to experimental data. The general attributes of the physical aspects of the tip leakage flow are successfully simulated. Results of this study demonstrate that the temperature load of the region near-tip clearance is larger than both the hub and mid-span areas over the blade, indicating that the tip leakage flow has a significant heat transfer effect on the blade tip platform and the suction side near-tip region.

DOI: 10.1615/JFlowVisImageProc.v13.i4.60 Download article, 393-406 pages

Article price - $35.00

<< Previous article   Next article >>