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A Note on the Empirical Constant in the Kolmogorov-Prandtl Eddy-Viscosity Expression
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The transport equation for the Reynolds stress is simplified to yield the Kolmogorov-Prandtl eddy viscosity expression, and the conditions are studied under which the empirical factor cμ in this ...
Prediction of Film Cooling by a Row of Holes With a Two-Dimensional Boundary-Layer Procedure
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present paper describes predictions of film cooling by a row of holes. The calculations have been performed by a two-dimensional boundary-layer code with special modifications that account ...
Calculation of Turbulent Wall Jets With an Algebraic Reynolds Stress Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A modified version of the k-ε turbulence model is developed which predicts well the main features of turbulent wall jets. The model relates the turbulent shear stress to the mean velocity ...
Scrutinizing the k-ε Turbulence Model Under Adverse Pressure Gradient Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The k-ε model and a one-equation model have been used to predict adverse pressure gradient boundary layers. While the one-equation model gives generally good results, the k-ε model reveals ...
Calculation of Heat Transfer to Convection-Cooled Gas Turbine Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A mathematical model is presented for calculating the external heat transfer coefficients around gas turbine blades. The model is based on a finite-difference procedure for solving the boundary-layer ...
Discussion of “<i>Turbulent Velocity Profiles for Smooth and Rough Open Channels</i>” by M. Salih Kirkgöz (November, 1989, Vol. 115, No. 11)
Publisher: American Society of Civil Engineers
Direct Numerical Simulations of Transitional Flow in Turbomachinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An overview is provided of various direct numerical simulations (DNS) of transitional flows in turbine-related geometries. Two flow cases are considered: the first case concerns separating flow ...
Computation of Separated-Flow Transition Using a Two-Layer Model of Turbulence
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A model for predicting transition in flows with separation is presented in this study. The two-layer model of turbulence is employed, along with a suitably defined intermittency function, which ...
Calculation of Annular and Twin Parallel Jets Using Various Discretization Schemes and Turbulence-Model Variations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper examines the performance of three discretization schemes for convection and three turbulence-model variations when used to simulate the recirculating flow in an annular and a plane ...
Turbulence Measurements in Model Settling Tank
Publisher: American Society of Civil Engineers
Abstract: Turbulence measurements are made in the inlet region of a rectangular laboratory settling tank with a two‐component laser‐Doppler system. The flow fields from a plane jet impinging on two types of deflector, at constant ...