Flow measurements in a curved-wall annular contraction

Journal Article · Thu Jul 01 04:00:00 EDT 1999 · Journal of Engineering for Gas Turbines and Power

DOI:https://doi.org/10.1115/1.2818493· OSTI ID:678028

Agrawal, A K; Tinneti, A; Gollahalli, S R ^[1]

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1. Univ. of Oklahoma, Norman, OK (United States). Gas Turbine Systems Lab.

Flow development in an annular contraction is of fundamental and practical importance in various applications including the gas turbine systems. This paper describes an experimental study of flow characteristics in a curved wall annular contraction. The results are presented in terms of the velocity vectors, surface pressure coefficients, static and stagnation pressure distributions, and profiles of mean velocities, turbulence intensity, and Reynolds shear stress. The flow conditions at the entrance were varied to evaluate how they affected the flow development in the passage. Results show that the contraction produced uniform static pressure and axial velocity profiles at the exit plane. Higher inlet turbulence affected the Reynolds shear stress in the contraction although the change in the static and total pressure fields was insignificant. The overall stagnation pressure loss was only 2 to 3 percent of the dynamic head at the contraction exit plane. Results showing only typical data are included in this paper. More extensive data sets to validate computer codes are available from the authors.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FC21-92MC29061
• OSTI ID: 678028
• Journal Information: Journal of Engineering for Gas Turbines and Power, Journal Name: Journal of Engineering for Gas Turbines and Power Journal Issue: 3 Vol. 121; ISSN 0742-4795; ISSN JETPEZ
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
ANNULAR SPACE
GAS FLOW
GAS TURBINES
MEASURING METHODS