Computational Investigations in Rectangular Convergent and Divergent Ribbed Channels
-
Karthikeyan Sivakumar
,
N. Kulasekharan
Abstract
Computational investigations on the rib turbulated flow inside a convergent and divergent rectangular channel with square ribs of different rib heights and different Reynolds numbers (Re=20,000, 40,000 and 60,000). The ribs were arranged in a staggered fashion between the upper and lower surfaces of the test section. Computational investigations are carried out using computational fluid dynamic software ANSYS Fluent 14.0. Suitable solver settings like turbulence models were identified from the literature and the boundary conditions for the simulations on a solution of independent grid. Computations were carried out for both convergent and divergent channels with 0 (smooth duct), 1.5, 3, 6, 9 and 12 mm rib heights, to identify the ribbed channel with optimal performance, assessed using a thermo hydraulic performance parameter. The convergent and divergent rectangular channels show higher Nu values than the standard correlation values.
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Artikel in diesem Heft
- Frontmatter
- Jet Engines – The New Masters of Advanced Flight Control
- Prediction of Film Cooling Effectiveness on a Gas Turbine Blade Leading Edge Using ANN and CFD
- Sustainability Metrics of a Small Scale Turbojet Engine
- Coupling Network Computing Applications in Air-cooled Turbine Blades Optimization
- Performance Enhancement of One and Two-Shaft Industrial Turboshaft Engines Topped With Wave Rotors
- Semi-Immersive Virtual Turbine Engine Simulation System
- A Novel Modeling Method for Aircraft Engine Using Nonlinear Autoregressive Exogenous (NARX) Models Based on Wavelet Neural Networks
- Defining the Ecological Coefficient of Performance for an Aircraft Propulsion System
- Investigation on the Accuracy of Superposition Predictions of Film Cooling Effectiveness
- Computational Investigations in Rectangular Convergent and Divergent Ribbed Channels
